b35973e3e3
-- d857e6e1f9b09a3eb5abd890677a98b23346f07a by Abseil Team <absl-team@google.com>: Simplify internal TryAcquireWithSpinning. No point declaring the `result` variable: we can just return the results directly. PiperOrigin-RevId: 307045800 -- 421952252bc23be51f47f7d23f3422bad1ed382c by Derek Mauro <dmauro@google.com>: Add custom sink support for `absl::Format()` through an ADL extension mechanism. Users can now define `void AbslFormatFlush(MySink* dest, absl::string_view part)` to allow `absl::Format()` to append to a custom sink. PiperOrigin-RevId: 306929052 -- c73d5cdb62cd58ea421ed1aeeab78a0ffcfeeefb by Matt Calabrese <calabrese@google.com>: Internal-only conformance-testing macro ABSL_INTERNAL_ASSERT_CONFORMANCE_OF for compile-time and runtime checks of a specified type, expected properties of that type, and a logically-ordered series of equivalence classes of that type. PiperOrigin-RevId: 306885512 -- a8c2495a07f37d68907855e3f0535bd5c27a3b52 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 306766753 GitOrigin-RevId: d857e6e1f9b09a3eb5abd890677a98b23346f07a Change-Id: Ic23c92ac74f9ffcbb2471ff8c6691f4b7b20354b
101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
//
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// Copyright 2017 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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//
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#include "absl/strings/internal/str_format/extension.h"
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#include <random>
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#include <string>
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#include "absl/strings/cord.h"
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#include "gtest/gtest.h"
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#include "absl/strings/str_format.h"
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#include "absl/strings/string_view.h"
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namespace my_namespace {
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class UserDefinedType {
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public:
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UserDefinedType() = default;
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void Append(absl::string_view str) { value_.append(str.data(), str.size()); }
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const std::string& Value() const { return value_; }
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friend void AbslFormatFlush(UserDefinedType* x, absl::string_view str) {
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x->Append(str);
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}
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private:
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std::string value_;
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};
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} // namespace my_namespace
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namespace {
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std::string MakeRandomString(size_t len) {
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std::random_device rd;
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std::mt19937 gen(rd());
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std::uniform_int_distribution<> dis('a', 'z');
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std::string s(len, '0');
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for (char& c : s) {
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c = dis(gen);
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}
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return s;
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}
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TEST(FormatExtensionTest, SinkAppendSubstring) {
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for (size_t chunk_size : {1, 10, 100, 1000, 10000}) {
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std::string expected, actual;
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absl::str_format_internal::FormatSinkImpl sink(&actual);
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for (size_t chunks = 0; chunks < 10; ++chunks) {
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std::string rand = MakeRandomString(chunk_size);
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expected += rand;
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sink.Append(rand);
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}
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sink.Flush();
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EXPECT_EQ(actual, expected);
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}
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}
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TEST(FormatExtensionTest, SinkAppendChars) {
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for (size_t chunk_size : {1, 10, 100, 1000, 10000}) {
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std::string expected, actual;
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absl::str_format_internal::FormatSinkImpl sink(&actual);
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for (size_t chunks = 0; chunks < 10; ++chunks) {
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std::string rand = MakeRandomString(1);
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expected.append(chunk_size, rand[0]);
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sink.Append(chunk_size, rand[0]);
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}
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sink.Flush();
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EXPECT_EQ(actual, expected);
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}
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}
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TEST(FormatExtensionTest, CordSink) {
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absl::Cord c;
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absl::Format(&c, "There were %04d little %s.", 3, "pigs");
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EXPECT_EQ(c, "There were 0003 little pigs.");
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absl::Format(&c, "And %-3llx bad wolf!", 1);
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EXPECT_EQ(c, "There were 0003 little pigs.And 1 bad wolf!");
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}
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TEST(FormatExtensionTest, CustomSink) {
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my_namespace::UserDefinedType sink;
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absl::Format(&sink, "There were %04d little %s.", 3, "pigs");
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EXPECT_EQ("There were 0003 little pigs.", sink.Value());
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absl::Format(&sink, "And %-3llx bad wolf!", 1);
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EXPECT_EQ("There were 0003 little pigs.And 1 bad wolf!", sink.Value());
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}
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} // namespace
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