082c006c04
... notably, this includes Abseil's own StatusOr type, which conflicted with our implementation (that was taken from TensorFlow). Change-Id: Ie7d6764b64055caaeb8dc7b6b9d066291e6b538f
1811 lines
58 KiB
C++
1811 lines
58 KiB
C++
// Copyright 2020 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/status/statusor.h"
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#include <array>
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#include <initializer_list>
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#include <memory>
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#include <type_traits>
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#include <utility>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "absl/base/casts.h"
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#include "absl/memory/memory.h"
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#include "absl/status/status.h"
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#include "absl/types/any.h"
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#include "absl/utility/utility.h"
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namespace {
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using ::testing::AllOf;
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using ::testing::AnyWith;
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using ::testing::ElementsAre;
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using ::testing::Field;
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using ::testing::Ne;
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using ::testing::Not;
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using ::testing::Pointee;
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using ::testing::VariantWith;
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#ifdef GTEST_HAS_STATUS_MATCHERS
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using ::testing::status::IsOk;
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using ::testing::status::IsOkAndHolds;
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#else // GTEST_HAS_STATUS_MATCHERS
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inline const ::absl::Status& GetStatus(const ::absl::Status& status) {
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return status;
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}
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template <typename T>
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inline const ::absl::Status& GetStatus(const ::absl::StatusOr<T>& status) {
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return status.status();
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}
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// Monomorphic implementation of matcher IsOkAndHolds(m). StatusOrType is a
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// reference to StatusOr<T>.
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template <typename StatusOrType>
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class IsOkAndHoldsMatcherImpl
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: public ::testing::MatcherInterface<StatusOrType> {
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public:
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typedef
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typename std::remove_reference<StatusOrType>::type::value_type value_type;
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template <typename InnerMatcher>
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explicit IsOkAndHoldsMatcherImpl(InnerMatcher&& inner_matcher)
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: inner_matcher_(::testing::SafeMatcherCast<const value_type&>(
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std::forward<InnerMatcher>(inner_matcher))) {}
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void DescribeTo(std::ostream* os) const override {
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*os << "is OK and has a value that ";
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inner_matcher_.DescribeTo(os);
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}
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void DescribeNegationTo(std::ostream* os) const override {
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*os << "isn't OK or has a value that ";
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inner_matcher_.DescribeNegationTo(os);
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}
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bool MatchAndExplain(
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StatusOrType actual_value,
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::testing::MatchResultListener* result_listener) const override {
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if (!actual_value.ok()) {
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*result_listener << "which has status " << actual_value.status();
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return false;
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}
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::testing::StringMatchResultListener inner_listener;
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const bool matches =
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inner_matcher_.MatchAndExplain(*actual_value, &inner_listener);
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const std::string inner_explanation = inner_listener.str();
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if (!inner_explanation.empty()) {
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*result_listener << "which contains value "
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<< ::testing::PrintToString(*actual_value) << ", "
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<< inner_explanation;
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}
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return matches;
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}
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private:
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const ::testing::Matcher<const value_type&> inner_matcher_;
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};
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// Implements IsOkAndHolds(m) as a polymorphic matcher.
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template <typename InnerMatcher>
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class IsOkAndHoldsMatcher {
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public:
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explicit IsOkAndHoldsMatcher(InnerMatcher inner_matcher)
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: inner_matcher_(std::move(inner_matcher)) {}
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// Converts this polymorphic matcher to a monomorphic matcher of the
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// given type. StatusOrType can be either StatusOr<T> or a
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// reference to StatusOr<T>.
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template <typename StatusOrType>
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operator ::testing::Matcher<StatusOrType>() const { // NOLINT
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return ::testing::Matcher<StatusOrType>(
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new IsOkAndHoldsMatcherImpl<const StatusOrType&>(inner_matcher_));
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}
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private:
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const InnerMatcher inner_matcher_;
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};
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// Monomorphic implementation of matcher IsOk() for a given type T.
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// T can be Status, StatusOr<>, or a reference to either of them.
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template <typename T>
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class MonoIsOkMatcherImpl : public ::testing::MatcherInterface<T> {
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public:
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void DescribeTo(std::ostream* os) const override { *os << "is OK"; }
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void DescribeNegationTo(std::ostream* os) const override {
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*os << "is not OK";
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}
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bool MatchAndExplain(T actual_value,
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::testing::MatchResultListener*) const override {
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return GetStatus(actual_value).ok();
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}
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};
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// Implements IsOk() as a polymorphic matcher.
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class IsOkMatcher {
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public:
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template <typename T>
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operator ::testing::Matcher<T>() const { // NOLINT
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return ::testing::Matcher<T>(new MonoIsOkMatcherImpl<T>());
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}
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};
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// Macros for testing the results of functions that return absl::Status or
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// absl::StatusOr<T> (for any type T).
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#define EXPECT_OK(expression) EXPECT_THAT(expression, IsOk())
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// Returns a gMock matcher that matches a StatusOr<> whose status is
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// OK and whose value matches the inner matcher.
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template <typename InnerMatcher>
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IsOkAndHoldsMatcher<typename std::decay<InnerMatcher>::type> IsOkAndHolds(
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InnerMatcher&& inner_matcher) {
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return IsOkAndHoldsMatcher<typename std::decay<InnerMatcher>::type>(
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std::forward<InnerMatcher>(inner_matcher));
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}
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// Returns a gMock matcher that matches a Status or StatusOr<> which is OK.
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inline IsOkMatcher IsOk() { return IsOkMatcher(); }
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#endif // GTEST_HAS_STATUS_MATCHERS
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struct CopyDetector {
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CopyDetector() = default;
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explicit CopyDetector(int xx) : x(xx) {}
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CopyDetector(CopyDetector&& d) noexcept
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: x(d.x), copied(false), moved(true) {}
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CopyDetector(const CopyDetector& d) : x(d.x), copied(true), moved(false) {}
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CopyDetector& operator=(const CopyDetector& c) {
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x = c.x;
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copied = true;
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moved = false;
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return *this;
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}
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CopyDetector& operator=(CopyDetector&& c) noexcept {
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x = c.x;
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copied = false;
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moved = true;
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return *this;
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}
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int x = 0;
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bool copied = false;
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bool moved = false;
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};
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testing::Matcher<const CopyDetector&> CopyDetectorHas(int a, bool b, bool c) {
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return AllOf(Field(&CopyDetector::x, a), Field(&CopyDetector::moved, b),
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Field(&CopyDetector::copied, c));
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}
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class Base1 {
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public:
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virtual ~Base1() {}
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int pad;
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};
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class Base2 {
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public:
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virtual ~Base2() {}
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int yetotherpad;
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};
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class Derived : public Base1, public Base2 {
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public:
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virtual ~Derived() {}
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int evenmorepad;
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};
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class CopyNoAssign {
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public:
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explicit CopyNoAssign(int value) : foo(value) {}
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CopyNoAssign(const CopyNoAssign& other) : foo(other.foo) {}
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int foo;
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private:
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const CopyNoAssign& operator=(const CopyNoAssign&);
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};
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absl::StatusOr<std::unique_ptr<int>> ReturnUniquePtr() {
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// Uses implicit constructor from T&&
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return absl::make_unique<int>(0);
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}
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TEST(StatusOr, ElementType) {
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static_assert(std::is_same<absl::StatusOr<int>::value_type, int>(), "");
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static_assert(std::is_same<absl::StatusOr<char>::value_type, char>(), "");
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}
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TEST(StatusOr, TestMoveOnlyInitialization) {
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absl::StatusOr<std::unique_ptr<int>> thing(ReturnUniquePtr());
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ASSERT_TRUE(thing.ok());
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EXPECT_EQ(0, **thing);
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int* previous = thing->get();
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thing = ReturnUniquePtr();
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EXPECT_TRUE(thing.ok());
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EXPECT_EQ(0, **thing);
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EXPECT_NE(previous, thing->get());
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}
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TEST(StatusOr, TestMoveOnlyValueExtraction) {
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absl::StatusOr<std::unique_ptr<int>> thing(ReturnUniquePtr());
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ASSERT_TRUE(thing.ok());
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std::unique_ptr<int> ptr = *std::move(thing);
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EXPECT_EQ(0, *ptr);
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thing = std::move(ptr);
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ptr = std::move(*thing);
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EXPECT_EQ(0, *ptr);
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}
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TEST(StatusOr, TestMoveOnlyInitializationFromTemporaryByValueOrDie) {
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std::unique_ptr<int> ptr(*ReturnUniquePtr());
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EXPECT_EQ(0, *ptr);
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}
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TEST(StatusOr, TestValueOrDieOverloadForConstTemporary) {
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static_assert(
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std::is_same<const int&&,
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decltype(
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std::declval<const absl::StatusOr<int>&&>().value())>(),
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"value() for const temporaries should return const T&&");
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}
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TEST(StatusOr, TestMoveOnlyConversion) {
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absl::StatusOr<std::unique_ptr<const int>> const_thing(ReturnUniquePtr());
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EXPECT_TRUE(const_thing.ok());
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EXPECT_EQ(0, **const_thing);
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// Test rvalue converting assignment
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const int* const_previous = const_thing->get();
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const_thing = ReturnUniquePtr();
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EXPECT_TRUE(const_thing.ok());
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EXPECT_EQ(0, **const_thing);
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EXPECT_NE(const_previous, const_thing->get());
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}
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TEST(StatusOr, TestMoveOnlyVector) {
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// Sanity check that absl::StatusOr<MoveOnly> works in vector.
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std::vector<absl::StatusOr<std::unique_ptr<int>>> vec;
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vec.push_back(ReturnUniquePtr());
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vec.resize(2);
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auto another_vec = std::move(vec);
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EXPECT_EQ(0, **another_vec[0]);
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EXPECT_EQ(absl::UnknownError(""), another_vec[1].status());
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}
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TEST(StatusOr, TestDefaultCtor) {
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absl::StatusOr<int> thing;
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EXPECT_FALSE(thing.ok());
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EXPECT_EQ(thing.status().code(), absl::StatusCode::kUnknown);
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}
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TEST(StatusOr, StatusCtorForwards) {
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absl::Status status(absl::StatusCode::kInternal, "Some error");
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EXPECT_EQ(absl::StatusOr<int>(status).status().message(), "Some error");
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EXPECT_EQ(status.message(), "Some error");
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EXPECT_EQ(absl::StatusOr<int>(std::move(status)).status().message(),
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"Some error");
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EXPECT_NE(status.message(), "Some error");
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}
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// Define `EXPECT_DEATH_OR_THROW` to test the behavior of `StatusOr::value`,
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// which either throws `BadStatusOrAccess` or `LOG(FATAL)` based on whether
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// exceptions are enabled.
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#ifdef ABSL_HAVE_EXCEPTIONS
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#define EXPECT_DEATH_OR_THROW(statement, status_) \
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EXPECT_THROW( \
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{ \
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try { \
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statement; \
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} catch (const absl::BadStatusOrAccess& e) { \
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EXPECT_EQ(e.status(), status_); \
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throw; \
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} \
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}, \
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absl::BadStatusOrAccess);
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#else // ABSL_HAVE_EXCEPTIONS
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#define EXPECT_DEATH_OR_THROW(statement, status) \
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EXPECT_DEATH_IF_SUPPORTED(statement, status.ToString());
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#endif // ABSL_HAVE_EXCEPTIONS
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TEST(StatusOrDeathTest, TestDefaultCtorValue) {
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absl::StatusOr<int> thing;
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EXPECT_DEATH_OR_THROW(thing.value(), absl::UnknownError(""));
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const absl::StatusOr<int> thing2;
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EXPECT_DEATH_OR_THROW(thing2.value(), absl::UnknownError(""));
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}
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TEST(StatusOrDeathTest, TestValueNotOk) {
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absl::StatusOr<int> thing(absl::CancelledError());
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EXPECT_DEATH_OR_THROW(thing.value(), absl::CancelledError());
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}
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TEST(StatusOrDeathTest, TestValueNotOkConst) {
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const absl::StatusOr<int> thing(absl::UnknownError(""));
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EXPECT_DEATH_OR_THROW(thing.value(), absl::UnknownError(""));
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}
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TEST(StatusOrDeathTest, TestPointerDefaultCtorValue) {
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absl::StatusOr<int*> thing;
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EXPECT_DEATH_OR_THROW(thing.value(), absl::UnknownError(""));
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}
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TEST(StatusOrDeathTest, TestPointerValueNotOk) {
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absl::StatusOr<int*> thing(absl::CancelledError());
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EXPECT_DEATH_OR_THROW(thing.value(), absl::CancelledError());
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}
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TEST(StatusOrDeathTest, TestPointerValueNotOkConst) {
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const absl::StatusOr<int*> thing(absl::CancelledError());
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EXPECT_DEATH_OR_THROW(thing.value(), absl::CancelledError());
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}
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#if GTEST_HAS_DEATH_TEST
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TEST(StatusOrDeathTest, TestStatusCtorStatusOk) {
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EXPECT_DEBUG_DEATH(
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{
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// This will DCHECK
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absl::StatusOr<int> thing(absl::OkStatus());
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// In optimized mode, we are actually going to get error::INTERNAL for
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// status here, rather than crashing, so check that.
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EXPECT_FALSE(thing.ok());
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EXPECT_EQ(thing.status().code(), absl::StatusCode::kInternal);
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},
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"An OK status is not a valid constructor argument");
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}
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TEST(StatusOrDeathTest, TestPointerStatusCtorStatusOk) {
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EXPECT_DEBUG_DEATH(
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{
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absl::StatusOr<int*> thing(absl::OkStatus());
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// In optimized mode, we are actually going to get error::INTERNAL for
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// status here, rather than crashing, so check that.
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EXPECT_FALSE(thing.ok());
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EXPECT_EQ(thing.status().code(), absl::StatusCode::kInternal);
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},
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"An OK status is not a valid constructor argument");
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}
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#endif
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TEST(StatusOr, ValueAccessor) {
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const int kIntValue = 110;
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{
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absl::StatusOr<int> status_or(kIntValue);
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EXPECT_EQ(kIntValue, status_or.value());
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EXPECT_EQ(kIntValue, std::move(status_or).value());
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}
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{
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absl::StatusOr<CopyDetector> status_or(kIntValue);
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EXPECT_THAT(status_or,
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IsOkAndHolds(CopyDetectorHas(kIntValue, false, false)));
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CopyDetector copy_detector = status_or.value();
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EXPECT_THAT(copy_detector, CopyDetectorHas(kIntValue, false, true));
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copy_detector = std::move(status_or).value();
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EXPECT_THAT(copy_detector, CopyDetectorHas(kIntValue, true, false));
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}
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}
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TEST(StatusOr, BadValueAccess) {
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const absl::Status kError = absl::CancelledError("message");
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absl::StatusOr<int> status_or(kError);
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EXPECT_DEATH_OR_THROW(status_or.value(), kError);
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}
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TEST(StatusOr, TestStatusCtor) {
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absl::StatusOr<int> thing(absl::CancelledError());
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EXPECT_FALSE(thing.ok());
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EXPECT_EQ(thing.status().code(), absl::StatusCode::kCancelled);
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}
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TEST(StatusOr, TestValueCtor) {
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const int kI = 4;
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const absl::StatusOr<int> thing(kI);
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EXPECT_TRUE(thing.ok());
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EXPECT_EQ(kI, *thing);
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}
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struct Foo {
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const int x;
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explicit Foo(int y) : x(y) {}
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};
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TEST(StatusOr, InPlaceConstruction) {
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EXPECT_THAT(absl::StatusOr<Foo>(absl::in_place, 10),
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IsOkAndHolds(Field(&Foo::x, 10)));
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}
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struct InPlaceHelper {
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InPlaceHelper(std::initializer_list<int> xs, std::unique_ptr<int> yy)
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: x(xs), y(std::move(yy)) {}
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const std::vector<int> x;
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std::unique_ptr<int> y;
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};
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TEST(StatusOr, InPlaceInitListConstruction) {
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absl::StatusOr<InPlaceHelper> status_or(absl::in_place, {10, 11, 12},
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absl::make_unique<int>(13));
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EXPECT_THAT(status_or, IsOkAndHolds(AllOf(
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Field(&InPlaceHelper::x, ElementsAre(10, 11, 12)),
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Field(&InPlaceHelper::y, Pointee(13)))));
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}
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TEST(StatusOr, Emplace) {
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absl::StatusOr<Foo> status_or_foo(10);
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status_or_foo.emplace(20);
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EXPECT_THAT(status_or_foo, IsOkAndHolds(Field(&Foo::x, 20)));
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status_or_foo = absl::InvalidArgumentError("msg");
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EXPECT_FALSE(status_or_foo.ok());
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EXPECT_EQ(status_or_foo.status().code(), absl::StatusCode::kInvalidArgument);
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EXPECT_EQ(status_or_foo.status().message(), "msg");
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status_or_foo.emplace(20);
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EXPECT_THAT(status_or_foo, IsOkAndHolds(Field(&Foo::x, 20)));
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}
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TEST(StatusOr, EmplaceInitializerList) {
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absl::StatusOr<InPlaceHelper> status_or(absl::in_place, {10, 11, 12},
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absl::make_unique<int>(13));
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status_or.emplace({1, 2, 3}, absl::make_unique<int>(4));
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EXPECT_THAT(status_or,
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IsOkAndHolds(AllOf(Field(&InPlaceHelper::x, ElementsAre(1, 2, 3)),
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Field(&InPlaceHelper::y, Pointee(4)))));
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status_or = absl::InvalidArgumentError("msg");
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EXPECT_FALSE(status_or.ok());
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EXPECT_EQ(status_or.status().code(), absl::StatusCode::kInvalidArgument);
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EXPECT_EQ(status_or.status().message(), "msg");
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status_or.emplace({1, 2, 3}, absl::make_unique<int>(4));
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EXPECT_THAT(status_or,
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IsOkAndHolds(AllOf(Field(&InPlaceHelper::x, ElementsAre(1, 2, 3)),
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Field(&InPlaceHelper::y, Pointee(4)))));
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}
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TEST(StatusOr, TestCopyCtorStatusOk) {
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const int kI = 4;
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const absl::StatusOr<int> original(kI);
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const absl::StatusOr<int> copy(original);
|
|
EXPECT_OK(copy.status());
|
|
EXPECT_EQ(*original, *copy);
|
|
}
|
|
|
|
TEST(StatusOr, TestCopyCtorStatusNotOk) {
|
|
absl::StatusOr<int> original(absl::CancelledError());
|
|
absl::StatusOr<int> copy(original);
|
|
EXPECT_EQ(copy.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, TestCopyCtorNonAssignable) {
|
|
const int kI = 4;
|
|
CopyNoAssign value(kI);
|
|
absl::StatusOr<CopyNoAssign> original(value);
|
|
absl::StatusOr<CopyNoAssign> copy(original);
|
|
EXPECT_OK(copy.status());
|
|
EXPECT_EQ(original->foo, copy->foo);
|
|
}
|
|
|
|
TEST(StatusOr, TestCopyCtorStatusOKConverting) {
|
|
const int kI = 4;
|
|
absl::StatusOr<int> original(kI);
|
|
absl::StatusOr<double> copy(original);
|
|
EXPECT_OK(copy.status());
|
|
EXPECT_DOUBLE_EQ(*original, *copy);
|
|
}
|
|
|
|
TEST(StatusOr, TestCopyCtorStatusNotOkConverting) {
|
|
absl::StatusOr<int> original(absl::CancelledError());
|
|
absl::StatusOr<double> copy(original);
|
|
EXPECT_EQ(copy.status(), original.status());
|
|
}
|
|
|
|
TEST(StatusOr, TestAssignmentStatusOk) {
|
|
// Copy assignmment
|
|
{
|
|
const auto p = std::make_shared<int>(17);
|
|
absl::StatusOr<std::shared_ptr<int>> source(p);
|
|
|
|
absl::StatusOr<std::shared_ptr<int>> target;
|
|
target = source;
|
|
|
|
ASSERT_TRUE(target.ok());
|
|
EXPECT_OK(target.status());
|
|
EXPECT_EQ(p, *target);
|
|
|
|
ASSERT_TRUE(source.ok());
|
|
EXPECT_OK(source.status());
|
|
EXPECT_EQ(p, *source);
|
|
}
|
|
|
|
// Move asssignment
|
|
{
|
|
const auto p = std::make_shared<int>(17);
|
|
absl::StatusOr<std::shared_ptr<int>> source(p);
|
|
|
|
absl::StatusOr<std::shared_ptr<int>> target;
|
|
target = std::move(source);
|
|
|
|
ASSERT_TRUE(target.ok());
|
|
EXPECT_OK(target.status());
|
|
EXPECT_EQ(p, *target);
|
|
|
|
ASSERT_TRUE(source.ok());
|
|
EXPECT_OK(source.status());
|
|
EXPECT_EQ(nullptr, *source);
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, TestAssignmentStatusNotOk) {
|
|
// Copy assignment
|
|
{
|
|
const absl::Status expected = absl::CancelledError();
|
|
absl::StatusOr<int> source(expected);
|
|
|
|
absl::StatusOr<int> target;
|
|
target = source;
|
|
|
|
EXPECT_FALSE(target.ok());
|
|
EXPECT_EQ(expected, target.status());
|
|
|
|
EXPECT_FALSE(source.ok());
|
|
EXPECT_EQ(expected, source.status());
|
|
}
|
|
|
|
// Move assignment
|
|
{
|
|
const absl::Status expected = absl::CancelledError();
|
|
absl::StatusOr<int> source(expected);
|
|
|
|
absl::StatusOr<int> target;
|
|
target = std::move(source);
|
|
|
|
EXPECT_FALSE(target.ok());
|
|
EXPECT_EQ(expected, target.status());
|
|
|
|
EXPECT_FALSE(source.ok());
|
|
EXPECT_EQ(source.status().code(), absl::StatusCode::kInternal);
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, TestAssignmentStatusOKConverting) {
|
|
// Copy assignment
|
|
{
|
|
const int kI = 4;
|
|
absl::StatusOr<int> source(kI);
|
|
|
|
absl::StatusOr<double> target;
|
|
target = source;
|
|
|
|
ASSERT_TRUE(target.ok());
|
|
EXPECT_OK(target.status());
|
|
EXPECT_DOUBLE_EQ(kI, *target);
|
|
|
|
ASSERT_TRUE(source.ok());
|
|
EXPECT_OK(source.status());
|
|
EXPECT_DOUBLE_EQ(kI, *source);
|
|
}
|
|
|
|
// Move assignment
|
|
{
|
|
const auto p = new int(17);
|
|
absl::StatusOr<std::unique_ptr<int>> source(absl::WrapUnique(p));
|
|
|
|
absl::StatusOr<std::shared_ptr<int>> target;
|
|
target = std::move(source);
|
|
|
|
ASSERT_TRUE(target.ok());
|
|
EXPECT_OK(target.status());
|
|
EXPECT_EQ(p, target->get());
|
|
|
|
ASSERT_TRUE(source.ok());
|
|
EXPECT_OK(source.status());
|
|
EXPECT_EQ(nullptr, source->get());
|
|
}
|
|
}
|
|
|
|
struct A {
|
|
int x;
|
|
};
|
|
|
|
struct ImplicitConstructibleFromA {
|
|
int x;
|
|
bool moved;
|
|
ImplicitConstructibleFromA(const A& a) // NOLINT
|
|
: x(a.x), moved(false) {}
|
|
ImplicitConstructibleFromA(A&& a) // NOLINT
|
|
: x(a.x), moved(true) {}
|
|
};
|
|
|
|
TEST(StatusOr, ImplicitConvertingConstructor) {
|
|
EXPECT_THAT(
|
|
absl::implicit_cast<absl::StatusOr<ImplicitConstructibleFromA>>(
|
|
absl::StatusOr<A>(A{11})),
|
|
IsOkAndHolds(AllOf(Field(&ImplicitConstructibleFromA::x, 11),
|
|
Field(&ImplicitConstructibleFromA::moved, true))));
|
|
absl::StatusOr<A> a(A{12});
|
|
EXPECT_THAT(
|
|
absl::implicit_cast<absl::StatusOr<ImplicitConstructibleFromA>>(a),
|
|
IsOkAndHolds(AllOf(Field(&ImplicitConstructibleFromA::x, 12),
|
|
Field(&ImplicitConstructibleFromA::moved, false))));
|
|
}
|
|
|
|
struct ExplicitConstructibleFromA {
|
|
int x;
|
|
bool moved;
|
|
explicit ExplicitConstructibleFromA(const A& a) : x(a.x), moved(false) {}
|
|
explicit ExplicitConstructibleFromA(A&& a) : x(a.x), moved(true) {}
|
|
};
|
|
|
|
TEST(StatusOr, ExplicitConvertingConstructor) {
|
|
EXPECT_FALSE(
|
|
(std::is_convertible<const absl::StatusOr<A>&,
|
|
absl::StatusOr<ExplicitConstructibleFromA>>::value));
|
|
EXPECT_FALSE(
|
|
(std::is_convertible<absl::StatusOr<A>&&,
|
|
absl::StatusOr<ExplicitConstructibleFromA>>::value));
|
|
EXPECT_THAT(
|
|
absl::StatusOr<ExplicitConstructibleFromA>(absl::StatusOr<A>(A{11})),
|
|
IsOkAndHolds(AllOf(Field(&ExplicitConstructibleFromA::x, 11),
|
|
Field(&ExplicitConstructibleFromA::moved, true))));
|
|
absl::StatusOr<A> a(A{12});
|
|
EXPECT_THAT(
|
|
absl::StatusOr<ExplicitConstructibleFromA>(a),
|
|
IsOkAndHolds(AllOf(Field(&ExplicitConstructibleFromA::x, 12),
|
|
Field(&ExplicitConstructibleFromA::moved, false))));
|
|
}
|
|
|
|
struct ImplicitConstructibleFromBool {
|
|
ImplicitConstructibleFromBool(bool y) : x(y) {} // NOLINT
|
|
bool x = false;
|
|
};
|
|
|
|
struct ConvertibleToBool {
|
|
explicit ConvertibleToBool(bool y) : x(y) {}
|
|
operator bool() const { return x; } // NOLINT
|
|
bool x = false;
|
|
};
|
|
|
|
TEST(StatusOr, ImplicitBooleanConstructionWithImplicitCasts) {
|
|
EXPECT_THAT(absl::StatusOr<bool>(absl::StatusOr<ConvertibleToBool>(true)),
|
|
IsOkAndHolds(true));
|
|
EXPECT_THAT(absl::StatusOr<bool>(absl::StatusOr<ConvertibleToBool>(false)),
|
|
IsOkAndHolds(false));
|
|
EXPECT_THAT(
|
|
absl::implicit_cast<absl::StatusOr<ImplicitConstructibleFromBool>>(
|
|
absl::StatusOr<bool>(false)),
|
|
IsOkAndHolds(Field(&ImplicitConstructibleFromBool::x, false)));
|
|
EXPECT_FALSE((std::is_convertible<
|
|
absl::StatusOr<ConvertibleToBool>,
|
|
absl::StatusOr<ImplicitConstructibleFromBool>>::value));
|
|
}
|
|
|
|
TEST(StatusOr, BooleanConstructionWithImplicitCasts) {
|
|
EXPECT_THAT(absl::StatusOr<bool>(absl::StatusOr<ConvertibleToBool>(true)),
|
|
IsOkAndHolds(true));
|
|
EXPECT_THAT(absl::StatusOr<bool>(absl::StatusOr<ConvertibleToBool>(false)),
|
|
IsOkAndHolds(false));
|
|
EXPECT_THAT(
|
|
absl::StatusOr<ImplicitConstructibleFromBool>{
|
|
absl::StatusOr<bool>(false)},
|
|
IsOkAndHolds(Field(&ImplicitConstructibleFromBool::x, false)));
|
|
EXPECT_THAT(
|
|
absl::StatusOr<ImplicitConstructibleFromBool>{
|
|
absl::StatusOr<bool>(absl::InvalidArgumentError(""))},
|
|
Not(IsOk()));
|
|
|
|
EXPECT_THAT(
|
|
absl::StatusOr<ImplicitConstructibleFromBool>{
|
|
absl::StatusOr<ConvertibleToBool>(ConvertibleToBool{false})},
|
|
IsOkAndHolds(Field(&ImplicitConstructibleFromBool::x, false)));
|
|
EXPECT_THAT(
|
|
absl::StatusOr<ImplicitConstructibleFromBool>{
|
|
absl::StatusOr<ConvertibleToBool>(absl::InvalidArgumentError(""))},
|
|
Not(IsOk()));
|
|
}
|
|
|
|
TEST(StatusOr, ConstImplicitCast) {
|
|
EXPECT_THAT(absl::implicit_cast<absl::StatusOr<bool>>(
|
|
absl::StatusOr<const bool>(true)),
|
|
IsOkAndHolds(true));
|
|
EXPECT_THAT(absl::implicit_cast<absl::StatusOr<bool>>(
|
|
absl::StatusOr<const bool>(false)),
|
|
IsOkAndHolds(false));
|
|
EXPECT_THAT(absl::implicit_cast<absl::StatusOr<const bool>>(
|
|
absl::StatusOr<bool>(true)),
|
|
IsOkAndHolds(true));
|
|
EXPECT_THAT(absl::implicit_cast<absl::StatusOr<const bool>>(
|
|
absl::StatusOr<bool>(false)),
|
|
IsOkAndHolds(false));
|
|
EXPECT_THAT(absl::implicit_cast<absl::StatusOr<const std::string>>(
|
|
absl::StatusOr<std::string>("foo")),
|
|
IsOkAndHolds("foo"));
|
|
EXPECT_THAT(absl::implicit_cast<absl::StatusOr<std::string>>(
|
|
absl::StatusOr<const std::string>("foo")),
|
|
IsOkAndHolds("foo"));
|
|
EXPECT_THAT(
|
|
absl::implicit_cast<absl::StatusOr<std::shared_ptr<const std::string>>>(
|
|
absl::StatusOr<std::shared_ptr<std::string>>(
|
|
std::make_shared<std::string>("foo"))),
|
|
IsOkAndHolds(Pointee(std::string("foo"))));
|
|
}
|
|
|
|
TEST(StatusOr, ConstExplicitConstruction) {
|
|
EXPECT_THAT(absl::StatusOr<bool>(absl::StatusOr<const bool>(true)),
|
|
IsOkAndHolds(true));
|
|
EXPECT_THAT(absl::StatusOr<bool>(absl::StatusOr<const bool>(false)),
|
|
IsOkAndHolds(false));
|
|
EXPECT_THAT(absl::StatusOr<const bool>(absl::StatusOr<bool>(true)),
|
|
IsOkAndHolds(true));
|
|
EXPECT_THAT(absl::StatusOr<const bool>(absl::StatusOr<bool>(false)),
|
|
IsOkAndHolds(false));
|
|
}
|
|
|
|
struct ExplicitConstructibleFromInt {
|
|
int x;
|
|
explicit ExplicitConstructibleFromInt(int y) : x(y) {}
|
|
};
|
|
|
|
TEST(StatusOr, ExplicitConstruction) {
|
|
EXPECT_THAT(absl::StatusOr<ExplicitConstructibleFromInt>(10),
|
|
IsOkAndHolds(Field(&ExplicitConstructibleFromInt::x, 10)));
|
|
}
|
|
|
|
TEST(StatusOr, ImplicitConstruction) {
|
|
// Check implicit casting works.
|
|
auto status_or =
|
|
absl::implicit_cast<absl::StatusOr<absl::variant<int, std::string>>>(10);
|
|
EXPECT_THAT(status_or, IsOkAndHolds(VariantWith<int>(10)));
|
|
}
|
|
|
|
TEST(StatusOr, ImplicitConstructionFromInitliazerList) {
|
|
// Note: dropping the explicit std::initializer_list<int> is not supported
|
|
// by absl::StatusOr or absl::optional.
|
|
auto status_or =
|
|
absl::implicit_cast<absl::StatusOr<std::vector<int>>>({{10, 20, 30}});
|
|
EXPECT_THAT(status_or, IsOkAndHolds(ElementsAre(10, 20, 30)));
|
|
}
|
|
|
|
TEST(StatusOr, UniquePtrImplicitConstruction) {
|
|
auto status_or = absl::implicit_cast<absl::StatusOr<std::unique_ptr<Base1>>>(
|
|
absl::make_unique<Derived>());
|
|
EXPECT_THAT(status_or, IsOkAndHolds(Ne(nullptr)));
|
|
}
|
|
|
|
TEST(StatusOr, NestedStatusOrCopyAndMoveConstructorTests) {
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> status_or = CopyDetector(10);
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> status_error =
|
|
absl::InvalidArgumentError("foo");
|
|
EXPECT_THAT(status_or,
|
|
IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, true, false))));
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> a = status_or;
|
|
EXPECT_THAT(a, IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, false, true))));
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> a_err = status_error;
|
|
EXPECT_THAT(a_err, Not(IsOk()));
|
|
|
|
const absl::StatusOr<absl::StatusOr<CopyDetector>>& cref = status_or;
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> b = cref; // NOLINT
|
|
EXPECT_THAT(b, IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, false, true))));
|
|
const absl::StatusOr<absl::StatusOr<CopyDetector>>& cref_err = status_error;
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> b_err = cref_err; // NOLINT
|
|
EXPECT_THAT(b_err, Not(IsOk()));
|
|
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> c = std::move(status_or);
|
|
EXPECT_THAT(c, IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, true, false))));
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> c_err = std::move(status_error);
|
|
EXPECT_THAT(c_err, Not(IsOk()));
|
|
}
|
|
|
|
TEST(StatusOr, NestedStatusOrCopyAndMoveAssignment) {
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> status_or = CopyDetector(10);
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> status_error =
|
|
absl::InvalidArgumentError("foo");
|
|
absl::StatusOr<absl::StatusOr<CopyDetector>> a;
|
|
a = status_or;
|
|
EXPECT_THAT(a, IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, false, true))));
|
|
a = status_error;
|
|
EXPECT_THAT(a, Not(IsOk()));
|
|
|
|
const absl::StatusOr<absl::StatusOr<CopyDetector>>& cref = status_or;
|
|
a = cref;
|
|
EXPECT_THAT(a, IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, false, true))));
|
|
const absl::StatusOr<absl::StatusOr<CopyDetector>>& cref_err = status_error;
|
|
a = cref_err;
|
|
EXPECT_THAT(a, Not(IsOk()));
|
|
a = std::move(status_or);
|
|
EXPECT_THAT(a, IsOkAndHolds(IsOkAndHolds(CopyDetectorHas(10, true, false))));
|
|
a = std::move(status_error);
|
|
EXPECT_THAT(a, Not(IsOk()));
|
|
}
|
|
|
|
struct Copyable {
|
|
Copyable() {}
|
|
Copyable(const Copyable&) {}
|
|
Copyable& operator=(const Copyable&) { return *this; }
|
|
};
|
|
|
|
struct MoveOnly {
|
|
MoveOnly() {}
|
|
MoveOnly(MoveOnly&&) {}
|
|
MoveOnly& operator=(MoveOnly&&) { return *this; }
|
|
};
|
|
|
|
struct NonMovable {
|
|
NonMovable() {}
|
|
NonMovable(const NonMovable&) = delete;
|
|
NonMovable(NonMovable&&) = delete;
|
|
NonMovable& operator=(const NonMovable&) = delete;
|
|
NonMovable& operator=(NonMovable&&) = delete;
|
|
};
|
|
|
|
TEST(StatusOr, CopyAndMoveAbility) {
|
|
EXPECT_TRUE(std::is_copy_constructible<Copyable>::value);
|
|
EXPECT_TRUE(std::is_copy_assignable<Copyable>::value);
|
|
EXPECT_TRUE(std::is_move_constructible<Copyable>::value);
|
|
EXPECT_TRUE(std::is_move_assignable<Copyable>::value);
|
|
EXPECT_FALSE(std::is_copy_constructible<MoveOnly>::value);
|
|
EXPECT_FALSE(std::is_copy_assignable<MoveOnly>::value);
|
|
EXPECT_TRUE(std::is_move_constructible<MoveOnly>::value);
|
|
EXPECT_TRUE(std::is_move_assignable<MoveOnly>::value);
|
|
EXPECT_FALSE(std::is_copy_constructible<NonMovable>::value);
|
|
EXPECT_FALSE(std::is_copy_assignable<NonMovable>::value);
|
|
EXPECT_FALSE(std::is_move_constructible<NonMovable>::value);
|
|
EXPECT_FALSE(std::is_move_assignable<NonMovable>::value);
|
|
}
|
|
|
|
TEST(StatusOr, StatusOrAnyCopyAndMoveConstructorTests) {
|
|
absl::StatusOr<absl::any> status_or = CopyDetector(10);
|
|
absl::StatusOr<absl::any> status_error = absl::InvalidArgumentError("foo");
|
|
EXPECT_THAT(
|
|
status_or,
|
|
IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, true, false))));
|
|
absl::StatusOr<absl::any> a = status_or;
|
|
EXPECT_THAT(
|
|
a, IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, false, true))));
|
|
absl::StatusOr<absl::any> a_err = status_error;
|
|
EXPECT_THAT(a_err, Not(IsOk()));
|
|
|
|
const absl::StatusOr<absl::any>& cref = status_or;
|
|
// No lint for no-change copy.
|
|
absl::StatusOr<absl::any> b = cref; // NOLINT
|
|
EXPECT_THAT(
|
|
b, IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, false, true))));
|
|
const absl::StatusOr<absl::any>& cref_err = status_error;
|
|
// No lint for no-change copy.
|
|
absl::StatusOr<absl::any> b_err = cref_err; // NOLINT
|
|
EXPECT_THAT(b_err, Not(IsOk()));
|
|
|
|
absl::StatusOr<absl::any> c = std::move(status_or);
|
|
EXPECT_THAT(
|
|
c, IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, true, false))));
|
|
absl::StatusOr<absl::any> c_err = std::move(status_error);
|
|
EXPECT_THAT(c_err, Not(IsOk()));
|
|
}
|
|
|
|
TEST(StatusOr, StatusOrAnyCopyAndMoveAssignment) {
|
|
absl::StatusOr<absl::any> status_or = CopyDetector(10);
|
|
absl::StatusOr<absl::any> status_error = absl::InvalidArgumentError("foo");
|
|
absl::StatusOr<absl::any> a;
|
|
a = status_or;
|
|
EXPECT_THAT(
|
|
a, IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, false, true))));
|
|
a = status_error;
|
|
EXPECT_THAT(a, Not(IsOk()));
|
|
|
|
const absl::StatusOr<absl::any>& cref = status_or;
|
|
a = cref;
|
|
EXPECT_THAT(
|
|
a, IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, false, true))));
|
|
const absl::StatusOr<absl::any>& cref_err = status_error;
|
|
a = cref_err;
|
|
EXPECT_THAT(a, Not(IsOk()));
|
|
a = std::move(status_or);
|
|
EXPECT_THAT(
|
|
a, IsOkAndHolds(AnyWith<CopyDetector>(CopyDetectorHas(10, true, false))));
|
|
a = std::move(status_error);
|
|
EXPECT_THAT(a, Not(IsOk()));
|
|
}
|
|
|
|
TEST(StatusOr, StatusOrCopyAndMoveTestsConstructor) {
|
|
absl::StatusOr<CopyDetector> status_or(10);
|
|
ASSERT_THAT(status_or, IsOkAndHolds(CopyDetectorHas(10, false, false)));
|
|
absl::StatusOr<CopyDetector> a(status_or);
|
|
EXPECT_THAT(a, IsOkAndHolds(CopyDetectorHas(10, false, true)));
|
|
const absl::StatusOr<CopyDetector>& cref = status_or;
|
|
absl::StatusOr<CopyDetector> b(cref); // NOLINT
|
|
EXPECT_THAT(b, IsOkAndHolds(CopyDetectorHas(10, false, true)));
|
|
absl::StatusOr<CopyDetector> c(std::move(status_or));
|
|
EXPECT_THAT(c, IsOkAndHolds(CopyDetectorHas(10, true, false)));
|
|
}
|
|
|
|
TEST(StatusOr, StatusOrCopyAndMoveTestsAssignment) {
|
|
absl::StatusOr<CopyDetector> status_or(10);
|
|
ASSERT_THAT(status_or, IsOkAndHolds(CopyDetectorHas(10, false, false)));
|
|
absl::StatusOr<CopyDetector> a;
|
|
a = status_or;
|
|
EXPECT_THAT(a, IsOkAndHolds(CopyDetectorHas(10, false, true)));
|
|
const absl::StatusOr<CopyDetector>& cref = status_or;
|
|
absl::StatusOr<CopyDetector> b;
|
|
b = cref;
|
|
EXPECT_THAT(b, IsOkAndHolds(CopyDetectorHas(10, false, true)));
|
|
absl::StatusOr<CopyDetector> c;
|
|
c = std::move(status_or);
|
|
EXPECT_THAT(c, IsOkAndHolds(CopyDetectorHas(10, true, false)));
|
|
}
|
|
|
|
TEST(StatusOr, AbslAnyAssignment) {
|
|
EXPECT_FALSE((std::is_assignable<absl::StatusOr<absl::any>,
|
|
absl::StatusOr<int>>::value));
|
|
absl::StatusOr<absl::any> status_or;
|
|
status_or = absl::InvalidArgumentError("foo");
|
|
EXPECT_THAT(status_or, Not(IsOk()));
|
|
}
|
|
|
|
TEST(StatusOr, ImplicitAssignment) {
|
|
absl::StatusOr<absl::variant<int, std::string>> status_or;
|
|
status_or = 10;
|
|
EXPECT_THAT(status_or, IsOkAndHolds(VariantWith<int>(10)));
|
|
}
|
|
|
|
TEST(StatusOr, SelfDirectInitAssignment) {
|
|
absl::StatusOr<std::vector<int>> status_or = {{10, 20, 30}};
|
|
status_or = *status_or;
|
|
EXPECT_THAT(status_or, IsOkAndHolds(ElementsAre(10, 20, 30)));
|
|
}
|
|
|
|
TEST(StatusOr, ImplicitCastFromInitializerList) {
|
|
absl::StatusOr<std::vector<int>> status_or = {{10, 20, 30}};
|
|
EXPECT_THAT(status_or, IsOkAndHolds(ElementsAre(10, 20, 30)));
|
|
}
|
|
|
|
TEST(StatusOr, UniquePtrImplicitAssignment) {
|
|
absl::StatusOr<std::unique_ptr<Base1>> status_or;
|
|
status_or = absl::make_unique<Derived>();
|
|
EXPECT_THAT(status_or, IsOkAndHolds(Ne(nullptr)));
|
|
}
|
|
|
|
TEST(StatusOr, Pointer) {
|
|
struct A {};
|
|
struct B : public A {};
|
|
struct C : private A {};
|
|
|
|
EXPECT_TRUE((std::is_constructible<absl::StatusOr<A*>, B*>::value));
|
|
EXPECT_TRUE((std::is_convertible<B*, absl::StatusOr<A*>>::value));
|
|
EXPECT_FALSE((std::is_constructible<absl::StatusOr<A*>, C*>::value));
|
|
EXPECT_FALSE((std::is_convertible<C*, absl::StatusOr<A*>>::value));
|
|
}
|
|
|
|
TEST(StatusOr, TestAssignmentStatusNotOkConverting) {
|
|
// Copy assignment
|
|
{
|
|
const absl::Status expected = absl::CancelledError();
|
|
absl::StatusOr<int> source(expected);
|
|
|
|
absl::StatusOr<double> target;
|
|
target = source;
|
|
|
|
EXPECT_FALSE(target.ok());
|
|
EXPECT_EQ(expected, target.status());
|
|
|
|
EXPECT_FALSE(source.ok());
|
|
EXPECT_EQ(expected, source.status());
|
|
}
|
|
|
|
// Move assignment
|
|
{
|
|
const absl::Status expected = absl::CancelledError();
|
|
absl::StatusOr<int> source(expected);
|
|
|
|
absl::StatusOr<double> target;
|
|
target = std::move(source);
|
|
|
|
EXPECT_FALSE(target.ok());
|
|
EXPECT_EQ(expected, target.status());
|
|
|
|
EXPECT_FALSE(source.ok());
|
|
EXPECT_EQ(source.status().code(), absl::StatusCode::kInternal);
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, SelfAssignment) {
|
|
// Copy-assignment, status OK
|
|
{
|
|
// A string long enough that it's likely to defeat any inline representation
|
|
// optimization.
|
|
const std::string long_str(128, 'a');
|
|
|
|
absl::StatusOr<std::string> so = long_str;
|
|
so = *&so;
|
|
|
|
ASSERT_TRUE(so.ok());
|
|
EXPECT_OK(so.status());
|
|
EXPECT_EQ(long_str, *so);
|
|
}
|
|
|
|
// Copy-assignment, error status
|
|
{
|
|
absl::StatusOr<int> so = absl::NotFoundError("taco");
|
|
so = *&so;
|
|
|
|
EXPECT_FALSE(so.ok());
|
|
EXPECT_EQ(so.status().code(), absl::StatusCode::kNotFound);
|
|
EXPECT_EQ(so.status().message(), "taco");
|
|
}
|
|
|
|
// Move-assignment with copyable type, status OK
|
|
{
|
|
absl::StatusOr<int> so = 17;
|
|
|
|
// Fool the compiler, which otherwise complains.
|
|
auto& same = so;
|
|
so = std::move(same);
|
|
|
|
ASSERT_TRUE(so.ok());
|
|
EXPECT_OK(so.status());
|
|
EXPECT_EQ(17, *so);
|
|
}
|
|
|
|
// Move-assignment with copyable type, error status
|
|
{
|
|
absl::StatusOr<int> so = absl::NotFoundError("taco");
|
|
|
|
// Fool the compiler, which otherwise complains.
|
|
auto& same = so;
|
|
so = std::move(same);
|
|
|
|
EXPECT_FALSE(so.ok());
|
|
EXPECT_EQ(so.status().code(), absl::StatusCode::kNotFound);
|
|
EXPECT_EQ(so.status().message(), "taco");
|
|
}
|
|
|
|
// Move-assignment with non-copyable type, status OK
|
|
{
|
|
const auto raw = new int(17);
|
|
absl::StatusOr<std::unique_ptr<int>> so = absl::WrapUnique(raw);
|
|
|
|
// Fool the compiler, which otherwise complains.
|
|
auto& same = so;
|
|
so = std::move(same);
|
|
|
|
ASSERT_TRUE(so.ok());
|
|
EXPECT_OK(so.status());
|
|
EXPECT_EQ(raw, so->get());
|
|
}
|
|
|
|
// Move-assignment with non-copyable type, error status
|
|
{
|
|
absl::StatusOr<std::unique_ptr<int>> so = absl::NotFoundError("taco");
|
|
|
|
// Fool the compiler, which otherwise complains.
|
|
auto& same = so;
|
|
so = std::move(same);
|
|
|
|
EXPECT_FALSE(so.ok());
|
|
EXPECT_EQ(so.status().code(), absl::StatusCode::kNotFound);
|
|
EXPECT_EQ(so.status().message(), "taco");
|
|
}
|
|
}
|
|
|
|
// These types form the overload sets of the constructors and the assignment
|
|
// operators of `MockValue`. They distinguish construction from assignment,
|
|
// lvalue from rvalue.
|
|
struct FromConstructibleAssignableLvalue {};
|
|
struct FromConstructibleAssignableRvalue {};
|
|
struct FromImplicitConstructibleOnly {};
|
|
struct FromAssignableOnly {};
|
|
|
|
// This class is for testing the forwarding value assignments of `StatusOr`.
|
|
// `from_rvalue` indicates whether the constructor or the assignment taking
|
|
// rvalue reference is called. `from_assignment` indicates whether any
|
|
// assignment is called.
|
|
struct MockValue {
|
|
// Constructs `MockValue` from `FromConstructibleAssignableLvalue`.
|
|
MockValue(const FromConstructibleAssignableLvalue&) // NOLINT
|
|
: from_rvalue(false), assigned(false) {}
|
|
// Constructs `MockValue` from `FromConstructibleAssignableRvalue`.
|
|
MockValue(FromConstructibleAssignableRvalue&&) // NOLINT
|
|
: from_rvalue(true), assigned(false) {}
|
|
// Constructs `MockValue` from `FromImplicitConstructibleOnly`.
|
|
// `MockValue` is not assignable from `FromImplicitConstructibleOnly`.
|
|
MockValue(const FromImplicitConstructibleOnly&) // NOLINT
|
|
: from_rvalue(false), assigned(false) {}
|
|
// Assigns `FromConstructibleAssignableLvalue`.
|
|
MockValue& operator=(const FromConstructibleAssignableLvalue&) {
|
|
from_rvalue = false;
|
|
assigned = true;
|
|
return *this;
|
|
}
|
|
// Assigns `FromConstructibleAssignableRvalue` (rvalue only).
|
|
MockValue& operator=(FromConstructibleAssignableRvalue&&) {
|
|
from_rvalue = true;
|
|
assigned = true;
|
|
return *this;
|
|
}
|
|
// Assigns `FromAssignableOnly`, but not constructible from
|
|
// `FromAssignableOnly`.
|
|
MockValue& operator=(const FromAssignableOnly&) {
|
|
from_rvalue = false;
|
|
assigned = true;
|
|
return *this;
|
|
}
|
|
bool from_rvalue;
|
|
bool assigned;
|
|
};
|
|
|
|
// operator=(U&&)
|
|
TEST(StatusOr, PerfectForwardingAssignment) {
|
|
// U == T
|
|
constexpr int kValue1 = 10, kValue2 = 20;
|
|
absl::StatusOr<CopyDetector> status_or;
|
|
CopyDetector lvalue(kValue1);
|
|
status_or = lvalue;
|
|
EXPECT_THAT(status_or, IsOkAndHolds(CopyDetectorHas(kValue1, false, true)));
|
|
status_or = CopyDetector(kValue2);
|
|
EXPECT_THAT(status_or, IsOkAndHolds(CopyDetectorHas(kValue2, true, false)));
|
|
|
|
// U != T
|
|
EXPECT_TRUE(
|
|
(std::is_assignable<absl::StatusOr<MockValue>&,
|
|
const FromConstructibleAssignableLvalue&>::value));
|
|
EXPECT_TRUE((std::is_assignable<absl::StatusOr<MockValue>&,
|
|
FromConstructibleAssignableLvalue&&>::value));
|
|
EXPECT_FALSE(
|
|
(std::is_assignable<absl::StatusOr<MockValue>&,
|
|
const FromConstructibleAssignableRvalue&>::value));
|
|
EXPECT_TRUE((std::is_assignable<absl::StatusOr<MockValue>&,
|
|
FromConstructibleAssignableRvalue&&>::value));
|
|
EXPECT_TRUE(
|
|
(std::is_assignable<absl::StatusOr<MockValue>&,
|
|
const FromImplicitConstructibleOnly&>::value));
|
|
EXPECT_FALSE((std::is_assignable<absl::StatusOr<MockValue>&,
|
|
const FromAssignableOnly&>::value));
|
|
|
|
absl::StatusOr<MockValue> from_lvalue(FromConstructibleAssignableLvalue{});
|
|
EXPECT_FALSE(from_lvalue->from_rvalue);
|
|
EXPECT_FALSE(from_lvalue->assigned);
|
|
from_lvalue = FromConstructibleAssignableLvalue{};
|
|
EXPECT_FALSE(from_lvalue->from_rvalue);
|
|
EXPECT_TRUE(from_lvalue->assigned);
|
|
|
|
absl::StatusOr<MockValue> from_rvalue(FromConstructibleAssignableRvalue{});
|
|
EXPECT_TRUE(from_rvalue->from_rvalue);
|
|
EXPECT_FALSE(from_rvalue->assigned);
|
|
from_rvalue = FromConstructibleAssignableRvalue{};
|
|
EXPECT_TRUE(from_rvalue->from_rvalue);
|
|
EXPECT_TRUE(from_rvalue->assigned);
|
|
|
|
absl::StatusOr<MockValue> from_implicit_constructible(
|
|
FromImplicitConstructibleOnly{});
|
|
EXPECT_FALSE(from_implicit_constructible->from_rvalue);
|
|
EXPECT_FALSE(from_implicit_constructible->assigned);
|
|
// construct a temporary `StatusOr` object and invoke the `StatusOr` move
|
|
// assignment operator.
|
|
from_implicit_constructible = FromImplicitConstructibleOnly{};
|
|
EXPECT_FALSE(from_implicit_constructible->from_rvalue);
|
|
EXPECT_FALSE(from_implicit_constructible->assigned);
|
|
}
|
|
|
|
TEST(StatusOr, TestStatus) {
|
|
absl::StatusOr<int> good(4);
|
|
EXPECT_TRUE(good.ok());
|
|
absl::StatusOr<int> bad(absl::CancelledError());
|
|
EXPECT_FALSE(bad.ok());
|
|
EXPECT_EQ(bad.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, OperatorStarRefQualifiers) {
|
|
static_assert(
|
|
std::is_same<const int&,
|
|
decltype(*std::declval<const absl::StatusOr<int>&>())>(),
|
|
"Unexpected ref-qualifiers");
|
|
static_assert(
|
|
std::is_same<int&, decltype(*std::declval<absl::StatusOr<int>&>())>(),
|
|
"Unexpected ref-qualifiers");
|
|
static_assert(
|
|
std::is_same<const int&&,
|
|
decltype(*std::declval<const absl::StatusOr<int>&&>())>(),
|
|
"Unexpected ref-qualifiers");
|
|
static_assert(
|
|
std::is_same<int&&, decltype(*std::declval<absl::StatusOr<int>&&>())>(),
|
|
"Unexpected ref-qualifiers");
|
|
}
|
|
|
|
TEST(StatusOr, OperatorStar) {
|
|
const absl::StatusOr<std::string> const_lvalue("hello");
|
|
EXPECT_EQ("hello", *const_lvalue);
|
|
|
|
absl::StatusOr<std::string> lvalue("hello");
|
|
EXPECT_EQ("hello", *lvalue);
|
|
|
|
// Note: Recall that std::move() is equivalent to a static_cast to an rvalue
|
|
// reference type.
|
|
const absl::StatusOr<std::string> const_rvalue("hello");
|
|
EXPECT_EQ("hello", *std::move(const_rvalue)); // NOLINT
|
|
|
|
absl::StatusOr<std::string> rvalue("hello");
|
|
EXPECT_EQ("hello", *std::move(rvalue));
|
|
}
|
|
|
|
TEST(StatusOr, OperatorArrowQualifiers) {
|
|
static_assert(
|
|
std::is_same<
|
|
const int*,
|
|
decltype(std::declval<const absl::StatusOr<int>&>().operator->())>(),
|
|
"Unexpected qualifiers");
|
|
static_assert(
|
|
std::is_same<
|
|
int*, decltype(std::declval<absl::StatusOr<int>&>().operator->())>(),
|
|
"Unexpected qualifiers");
|
|
static_assert(
|
|
std::is_same<
|
|
const int*,
|
|
decltype(std::declval<const absl::StatusOr<int>&&>().operator->())>(),
|
|
"Unexpected qualifiers");
|
|
static_assert(
|
|
std::is_same<
|
|
int*, decltype(std::declval<absl::StatusOr<int>&&>().operator->())>(),
|
|
"Unexpected qualifiers");
|
|
}
|
|
|
|
TEST(StatusOr, OperatorArrow) {
|
|
const absl::StatusOr<std::string> const_lvalue("hello");
|
|
EXPECT_EQ(std::string("hello"), const_lvalue->c_str());
|
|
|
|
absl::StatusOr<std::string> lvalue("hello");
|
|
EXPECT_EQ(std::string("hello"), lvalue->c_str());
|
|
}
|
|
|
|
TEST(StatusOr, RValueStatus) {
|
|
absl::StatusOr<int> so(absl::NotFoundError("taco"));
|
|
const absl::Status s = std::move(so).status();
|
|
|
|
EXPECT_EQ(s.code(), absl::StatusCode::kNotFound);
|
|
EXPECT_EQ(s.message(), "taco");
|
|
|
|
// Check that !ok() still implies !status().ok(), even after moving out of the
|
|
// object. See the note on the rvalue ref-qualified status method.
|
|
EXPECT_FALSE(so.ok()); // NOLINT
|
|
EXPECT_FALSE(so.status().ok());
|
|
EXPECT_EQ(so.status().code(), absl::StatusCode::kInternal);
|
|
EXPECT_EQ(so.status().message(), "Status accessed after move.");
|
|
}
|
|
|
|
TEST(StatusOr, TestValue) {
|
|
const int kI = 4;
|
|
absl::StatusOr<int> thing(kI);
|
|
EXPECT_EQ(kI, *thing);
|
|
}
|
|
|
|
TEST(StatusOr, TestValueConst) {
|
|
const int kI = 4;
|
|
const absl::StatusOr<int> thing(kI);
|
|
EXPECT_EQ(kI, *thing);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerDefaultCtor) {
|
|
absl::StatusOr<int*> thing;
|
|
EXPECT_FALSE(thing.ok());
|
|
EXPECT_EQ(thing.status().code(), absl::StatusCode::kUnknown);
|
|
}
|
|
|
|
|
|
|
|
TEST(StatusOr, TestPointerStatusCtor) {
|
|
absl::StatusOr<int*> thing(absl::CancelledError());
|
|
EXPECT_FALSE(thing.ok());
|
|
EXPECT_EQ(thing.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerValueCtor) {
|
|
const int kI = 4;
|
|
|
|
// Construction from a non-null pointer
|
|
{
|
|
absl::StatusOr<const int*> so(&kI);
|
|
EXPECT_TRUE(so.ok());
|
|
EXPECT_OK(so.status());
|
|
EXPECT_EQ(&kI, *so);
|
|
}
|
|
|
|
// Construction from a null pointer constant
|
|
{
|
|
absl::StatusOr<const int*> so(nullptr);
|
|
EXPECT_TRUE(so.ok());
|
|
EXPECT_OK(so.status());
|
|
EXPECT_EQ(nullptr, *so);
|
|
}
|
|
|
|
// Construction from a non-literal null pointer
|
|
{
|
|
const int* const p = nullptr;
|
|
|
|
absl::StatusOr<const int*> so(p);
|
|
EXPECT_TRUE(so.ok());
|
|
EXPECT_OK(so.status());
|
|
EXPECT_EQ(nullptr, *so);
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerCopyCtorStatusOk) {
|
|
const int kI = 0;
|
|
absl::StatusOr<const int*> original(&kI);
|
|
absl::StatusOr<const int*> copy(original);
|
|
EXPECT_OK(copy.status());
|
|
EXPECT_EQ(*original, *copy);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerCopyCtorStatusNotOk) {
|
|
absl::StatusOr<int*> original(absl::CancelledError());
|
|
absl::StatusOr<int*> copy(original);
|
|
EXPECT_EQ(copy.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerCopyCtorStatusOKConverting) {
|
|
Derived derived;
|
|
absl::StatusOr<Derived*> original(&derived);
|
|
absl::StatusOr<Base2*> copy(original);
|
|
EXPECT_OK(copy.status());
|
|
EXPECT_EQ(static_cast<const Base2*>(*original), *copy);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerCopyCtorStatusNotOkConverting) {
|
|
absl::StatusOr<Derived*> original(absl::CancelledError());
|
|
absl::StatusOr<Base2*> copy(original);
|
|
EXPECT_EQ(copy.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerAssignmentStatusOk) {
|
|
const int kI = 0;
|
|
absl::StatusOr<const int*> source(&kI);
|
|
absl::StatusOr<const int*> target;
|
|
target = source;
|
|
EXPECT_OK(target.status());
|
|
EXPECT_EQ(*source, *target);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerAssignmentStatusNotOk) {
|
|
absl::StatusOr<int*> source(absl::CancelledError());
|
|
absl::StatusOr<int*> target;
|
|
target = source;
|
|
EXPECT_EQ(target.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerAssignmentStatusOKConverting) {
|
|
Derived derived;
|
|
absl::StatusOr<Derived*> source(&derived);
|
|
absl::StatusOr<Base2*> target;
|
|
target = source;
|
|
EXPECT_OK(target.status());
|
|
EXPECT_EQ(static_cast<const Base2*>(*source), *target);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerAssignmentStatusNotOkConverting) {
|
|
absl::StatusOr<Derived*> source(absl::CancelledError());
|
|
absl::StatusOr<Base2*> target;
|
|
target = source;
|
|
EXPECT_EQ(target.status(), source.status());
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerStatus) {
|
|
const int kI = 0;
|
|
absl::StatusOr<const int*> good(&kI);
|
|
EXPECT_TRUE(good.ok());
|
|
absl::StatusOr<const int*> bad(absl::CancelledError());
|
|
EXPECT_EQ(bad.status().code(), absl::StatusCode::kCancelled);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerValue) {
|
|
const int kI = 0;
|
|
absl::StatusOr<const int*> thing(&kI);
|
|
EXPECT_EQ(&kI, *thing);
|
|
}
|
|
|
|
TEST(StatusOr, TestPointerValueConst) {
|
|
const int kI = 0;
|
|
const absl::StatusOr<const int*> thing(&kI);
|
|
EXPECT_EQ(&kI, *thing);
|
|
}
|
|
|
|
TEST(StatusOr, StatusOrVectorOfUniquePointerCanReserveAndResize) {
|
|
using EvilType = std::vector<std::unique_ptr<int>>;
|
|
static_assert(std::is_copy_constructible<EvilType>::value, "");
|
|
std::vector<::absl::StatusOr<EvilType>> v(5);
|
|
v.reserve(v.capacity() + 10);
|
|
v.resize(v.capacity() + 10);
|
|
}
|
|
|
|
TEST(StatusOr, ConstPayload) {
|
|
// A reduced version of a problematic type found in the wild. All of the
|
|
// operations below should compile.
|
|
absl::StatusOr<const int> a;
|
|
|
|
// Copy-construction
|
|
absl::StatusOr<const int> b(a);
|
|
|
|
// Copy-assignment
|
|
EXPECT_FALSE(std::is_copy_assignable<absl::StatusOr<const int>>::value);
|
|
|
|
// Move-construction
|
|
absl::StatusOr<const int> c(std::move(a));
|
|
|
|
// Move-assignment
|
|
EXPECT_FALSE(std::is_move_assignable<absl::StatusOr<const int>>::value);
|
|
}
|
|
|
|
TEST(StatusOr, MapToStatusOrUniquePtr) {
|
|
// A reduced version of a problematic type found in the wild. All of the
|
|
// operations below should compile.
|
|
using MapType = std::map<std::string, absl::StatusOr<std::unique_ptr<int>>>;
|
|
|
|
MapType a;
|
|
|
|
// Move-construction
|
|
MapType b(std::move(a));
|
|
|
|
// Move-assignment
|
|
a = std::move(b);
|
|
}
|
|
|
|
TEST(StatusOr, ValueOrOk) {
|
|
const absl::StatusOr<int> status_or = 0;
|
|
EXPECT_EQ(status_or.value_or(-1), 0);
|
|
}
|
|
|
|
TEST(StatusOr, ValueOrDefault) {
|
|
const absl::StatusOr<int> status_or = absl::CancelledError();
|
|
EXPECT_EQ(status_or.value_or(-1), -1);
|
|
}
|
|
|
|
TEST(StatusOr, MoveOnlyValueOrOk) {
|
|
EXPECT_THAT(absl::StatusOr<std::unique_ptr<int>>(absl::make_unique<int>(0))
|
|
.value_or(absl::make_unique<int>(-1)),
|
|
Pointee(0));
|
|
}
|
|
|
|
TEST(StatusOr, MoveOnlyValueOrDefault) {
|
|
EXPECT_THAT(absl::StatusOr<std::unique_ptr<int>>(absl::CancelledError())
|
|
.value_or(absl::make_unique<int>(-1)),
|
|
Pointee(-1));
|
|
}
|
|
|
|
static absl::StatusOr<int> MakeStatus() { return 100; }
|
|
|
|
TEST(StatusOr, TestIgnoreError) { MakeStatus().IgnoreError(); }
|
|
|
|
TEST(StatusOr, EqualityOperator) {
|
|
constexpr int kNumCases = 4;
|
|
std::array<absl::StatusOr<int>, kNumCases> group1 = {
|
|
absl::StatusOr<int>(1), absl::StatusOr<int>(2),
|
|
absl::StatusOr<int>(absl::InvalidArgumentError("msg")),
|
|
absl::StatusOr<int>(absl::InternalError("msg"))};
|
|
std::array<absl::StatusOr<int>, kNumCases> group2 = {
|
|
absl::StatusOr<int>(1), absl::StatusOr<int>(2),
|
|
absl::StatusOr<int>(absl::InvalidArgumentError("msg")),
|
|
absl::StatusOr<int>(absl::InternalError("msg"))};
|
|
for (int i = 0; i < kNumCases; ++i) {
|
|
for (int j = 0; j < kNumCases; ++j) {
|
|
if (i == j) {
|
|
EXPECT_TRUE(group1[i] == group2[j]);
|
|
EXPECT_FALSE(group1[i] != group2[j]);
|
|
} else {
|
|
EXPECT_FALSE(group1[i] == group2[j]);
|
|
EXPECT_TRUE(group1[i] != group2[j]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
struct MyType {
|
|
bool operator==(const MyType&) const { return true; }
|
|
};
|
|
|
|
enum class ConvTraits { kNone = 0, kImplicit = 1, kExplicit = 2 };
|
|
|
|
// This class has conversion operator to `StatusOr<T>` based on value of
|
|
// `conv_traits`.
|
|
template <typename T, ConvTraits conv_traits = ConvTraits::kNone>
|
|
struct StatusOrConversionBase {};
|
|
|
|
template <typename T>
|
|
struct StatusOrConversionBase<T, ConvTraits::kImplicit> {
|
|
operator absl::StatusOr<T>() const& { // NOLINT
|
|
return absl::InvalidArgumentError("conversion to absl::StatusOr");
|
|
}
|
|
operator absl::StatusOr<T>() && { // NOLINT
|
|
return absl::InvalidArgumentError("conversion to absl::StatusOr");
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct StatusOrConversionBase<T, ConvTraits::kExplicit> {
|
|
explicit operator absl::StatusOr<T>() const& {
|
|
return absl::InvalidArgumentError("conversion to absl::StatusOr");
|
|
}
|
|
explicit operator absl::StatusOr<T>() && {
|
|
return absl::InvalidArgumentError("conversion to absl::StatusOr");
|
|
}
|
|
};
|
|
|
|
// This class has conversion operator to `T` based on the value of
|
|
// `conv_traits`.
|
|
template <typename T, ConvTraits conv_traits = ConvTraits::kNone>
|
|
struct ConversionBase {};
|
|
|
|
template <typename T>
|
|
struct ConversionBase<T, ConvTraits::kImplicit> {
|
|
operator T() const& { return t; } // NOLINT
|
|
operator T() && { return std::move(t); } // NOLINT
|
|
T t;
|
|
};
|
|
|
|
template <typename T>
|
|
struct ConversionBase<T, ConvTraits::kExplicit> {
|
|
explicit operator T() const& { return t; }
|
|
explicit operator T() && { return std::move(t); }
|
|
T t;
|
|
};
|
|
|
|
// This class has conversion operator to `absl::Status` based on the value of
|
|
// `conv_traits`.
|
|
template <ConvTraits conv_traits = ConvTraits::kNone>
|
|
struct StatusConversionBase {};
|
|
|
|
template <>
|
|
struct StatusConversionBase<ConvTraits::kImplicit> {
|
|
operator absl::Status() const& { // NOLINT
|
|
return absl::InternalError("conversion to Status");
|
|
}
|
|
operator absl::Status() && { // NOLINT
|
|
return absl::InternalError("conversion to Status");
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct StatusConversionBase<ConvTraits::kExplicit> {
|
|
explicit operator absl::Status() const& { // NOLINT
|
|
return absl::InternalError("conversion to Status");
|
|
}
|
|
explicit operator absl::Status() && { // NOLINT
|
|
return absl::InternalError("conversion to Status");
|
|
}
|
|
};
|
|
|
|
static constexpr int kConvToStatus = 1;
|
|
static constexpr int kConvToStatusOr = 2;
|
|
static constexpr int kConvToT = 4;
|
|
static constexpr int kConvExplicit = 8;
|
|
|
|
constexpr ConvTraits GetConvTraits(int bit, int config) {
|
|
return (config & bit) == 0
|
|
? ConvTraits::kNone
|
|
: ((config & kConvExplicit) == 0 ? ConvTraits::kImplicit
|
|
: ConvTraits::kExplicit);
|
|
}
|
|
|
|
// This class conditionally has conversion operator to `absl::Status`, `T`,
|
|
// `StatusOr<T>`, based on values of the template parameters.
|
|
template <typename T, int config>
|
|
struct CustomType
|
|
: StatusOrConversionBase<T, GetConvTraits(kConvToStatusOr, config)>,
|
|
ConversionBase<T, GetConvTraits(kConvToT, config)>,
|
|
StatusConversionBase<GetConvTraits(kConvToStatus, config)> {};
|
|
|
|
struct ConvertibleToAnyStatusOr {
|
|
template <typename T>
|
|
operator absl::StatusOr<T>() const { // NOLINT
|
|
return absl::InvalidArgumentError("Conversion to absl::StatusOr");
|
|
}
|
|
};
|
|
|
|
// Test the rank of overload resolution for `StatusOr<T>` constructor and
|
|
// assignment, from highest to lowest:
|
|
// 1. T/Status
|
|
// 2. U that has conversion operator to absl::StatusOr<T>
|
|
// 3. U that is convertible to Status
|
|
// 4. U that is convertible to T
|
|
TEST(StatusOr, ConstructionFromT) {
|
|
// Construct absl::StatusOr<T> from T when T is convertible to
|
|
// absl::StatusOr<T>
|
|
{
|
|
ConvertibleToAnyStatusOr v;
|
|
absl::StatusOr<ConvertibleToAnyStatusOr> statusor(v);
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
{
|
|
ConvertibleToAnyStatusOr v;
|
|
absl::StatusOr<ConvertibleToAnyStatusOr> statusor = v;
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
// Construct absl::StatusOr<T> from T when T is explicitly convertible to
|
|
// Status
|
|
{
|
|
CustomType<MyType, kConvToStatus | kConvExplicit> v;
|
|
absl::StatusOr<CustomType<MyType, kConvToStatus | kConvExplicit>> statusor(
|
|
v);
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToStatus | kConvExplicit> v;
|
|
absl::StatusOr<CustomType<MyType, kConvToStatus | kConvExplicit>> statusor =
|
|
v;
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
}
|
|
|
|
// Construct absl::StatusOr<T> from U when U is explicitly convertible to T
|
|
TEST(StatusOr, ConstructionFromTypeConvertibleToT) {
|
|
{
|
|
CustomType<MyType, kConvToT | kConvExplicit> v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
}
|
|
|
|
// Construct absl::StatusOr<T> from U when U has explicit conversion operator to
|
|
// absl::StatusOr<T>
|
|
TEST(StatusOr, ConstructionFromTypeWithConversionOperatorToStatusOrT) {
|
|
{
|
|
CustomType<MyType, kConvToStatusOr | kConvExplicit> v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatusOr | kConvExplicit> v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToStatusOr | kConvToStatus | kConvExplicit> v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType,
|
|
kConvToT | kConvToStatusOr | kConvToStatus | kConvExplicit>
|
|
v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToStatusOr> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatusOr> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToStatusOr | kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatusOr | kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, ConstructionFromTypeConvertibleToStatus) {
|
|
// Construction fails because conversion to `Status` is explicit.
|
|
{
|
|
CustomType<MyType, kConvToStatus | kConvExplicit> v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_FALSE(statusor.ok());
|
|
EXPECT_EQ(statusor.status(), static_cast<absl::Status>(v));
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatus | kConvExplicit> v;
|
|
absl::StatusOr<MyType> statusor(v);
|
|
EXPECT_FALSE(statusor.ok());
|
|
EXPECT_EQ(statusor.status(), static_cast<absl::Status>(v));
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_FALSE(statusor.ok());
|
|
EXPECT_EQ(statusor.status(), static_cast<absl::Status>(v));
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor = v;
|
|
EXPECT_FALSE(statusor.ok());
|
|
EXPECT_EQ(statusor.status(), static_cast<absl::Status>(v));
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, AssignmentFromT) {
|
|
// Assign to absl::StatusOr<T> from T when T is convertible to
|
|
// absl::StatusOr<T>
|
|
{
|
|
ConvertibleToAnyStatusOr v;
|
|
absl::StatusOr<ConvertibleToAnyStatusOr> statusor;
|
|
statusor = v;
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
// Assign to absl::StatusOr<T> from T when T is convertible to Status
|
|
{
|
|
CustomType<MyType, kConvToStatus> v;
|
|
absl::StatusOr<CustomType<MyType, kConvToStatus>> statusor;
|
|
statusor = v;
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, AssignmentFromTypeConvertibleToT) {
|
|
// Assign to absl::StatusOr<T> from U when U is convertible to T
|
|
{
|
|
CustomType<MyType, kConvToT> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_TRUE(statusor.ok());
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, AssignmentFromTypeWithConversionOperatortoStatusOrT) {
|
|
// Assign to absl::StatusOr<T> from U when U has conversion operator to
|
|
// absl::StatusOr<T>
|
|
{
|
|
CustomType<MyType, kConvToStatusOr> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatusOr> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToStatusOr | kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatusOr | kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_EQ(statusor, v.operator absl::StatusOr<MyType>());
|
|
}
|
|
}
|
|
|
|
TEST(StatusOr, AssignmentFromTypeConvertibleToStatus) {
|
|
// Assign to absl::StatusOr<T> from U when U is convertible to Status
|
|
{
|
|
CustomType<MyType, kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_FALSE(statusor.ok());
|
|
EXPECT_EQ(statusor.status(), static_cast<absl::Status>(v));
|
|
}
|
|
{
|
|
CustomType<MyType, kConvToT | kConvToStatus> v;
|
|
absl::StatusOr<MyType> statusor;
|
|
statusor = v;
|
|
EXPECT_FALSE(statusor.ok());
|
|
EXPECT_EQ(statusor.status(), static_cast<absl::Status>(v));
|
|
}
|
|
}
|
|
|
|
} // namespace
|