231 lines
8.2 KiB
C++
231 lines
8.2 KiB
C++
//
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// Copyright 2019 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/flags/commandlineflag.h"
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#include <memory>
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#include <string>
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#include "gtest/gtest.h"
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#include "absl/flags/flag.h"
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#include "absl/flags/internal/commandlineflag.h"
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#include "absl/flags/internal/private_handle_accessor.h"
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#include "absl/flags/reflection.h"
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#include "absl/flags/usage_config.h"
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#include "absl/memory/memory.h"
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#include "absl/strings/match.h"
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#include "absl/strings/str_cat.h"
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#include "absl/strings/string_view.h"
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ABSL_FLAG(int, int_flag, 201, "int_flag help");
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ABSL_FLAG(std::string, string_flag, "dflt",
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absl::StrCat("string_flag", " help"));
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ABSL_RETIRED_FLAG(bool, bool_retired_flag, false, "bool_retired_flag help");
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// These are only used to test default values.
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ABSL_FLAG(int, int_flag2, 201, "");
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ABSL_FLAG(std::string, string_flag2, "dflt", "");
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namespace {
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namespace flags = absl::flags_internal;
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class CommandLineFlagTest : public testing::Test {
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protected:
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static void SetUpTestSuite() {
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// Install a function to normalize filenames before this test is run.
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absl::FlagsUsageConfig default_config;
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default_config.normalize_filename = &CommandLineFlagTest::NormalizeFileName;
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absl::SetFlagsUsageConfig(default_config);
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}
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void SetUp() override { flag_saver_ = absl::make_unique<absl::FlagSaver>(); }
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void TearDown() override { flag_saver_.reset(); }
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private:
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static std::string NormalizeFileName(absl::string_view fname) {
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#ifdef _WIN32
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std::string normalized(fname);
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std::replace(normalized.begin(), normalized.end(), '\\', '/');
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fname = normalized;
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#endif
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return std::string(fname);
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}
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std::unique_ptr<absl::FlagSaver> flag_saver_;
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};
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TEST_F(CommandLineFlagTest, TestAttributesAccessMethods) {
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auto* flag_01 = absl::FindCommandLineFlag("int_flag");
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ASSERT_TRUE(flag_01);
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EXPECT_EQ(flag_01->Name(), "int_flag");
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EXPECT_EQ(flag_01->Help(), "int_flag help");
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EXPECT_TRUE(!flag_01->IsRetired());
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EXPECT_TRUE(flag_01->IsOfType<int>());
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EXPECT_TRUE(!flag_01->IsOfType<bool>());
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EXPECT_TRUE(!flag_01->IsOfType<std::string>());
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EXPECT_TRUE(absl::EndsWith(flag_01->Filename(),
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"absl/flags/commandlineflag_test.cc"))
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<< flag_01->Filename();
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auto* flag_02 = absl::FindCommandLineFlag("string_flag");
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ASSERT_TRUE(flag_02);
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EXPECT_EQ(flag_02->Name(), "string_flag");
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EXPECT_EQ(flag_02->Help(), "string_flag help");
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EXPECT_TRUE(!flag_02->IsRetired());
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EXPECT_TRUE(flag_02->IsOfType<std::string>());
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EXPECT_TRUE(!flag_02->IsOfType<bool>());
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EXPECT_TRUE(!flag_02->IsOfType<int>());
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EXPECT_TRUE(absl::EndsWith(flag_02->Filename(),
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"absl/flags/commandlineflag_test.cc"))
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<< flag_02->Filename();
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}
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// --------------------------------------------------------------------
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TEST_F(CommandLineFlagTest, TestValueAccessMethods) {
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absl::SetFlag(&FLAGS_int_flag2, 301);
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auto* flag_01 = absl::FindCommandLineFlag("int_flag2");
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ASSERT_TRUE(flag_01);
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EXPECT_EQ(flag_01->CurrentValue(), "301");
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EXPECT_EQ(flag_01->DefaultValue(), "201");
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absl::SetFlag(&FLAGS_string_flag2, "new_str_value");
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auto* flag_02 = absl::FindCommandLineFlag("string_flag2");
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ASSERT_TRUE(flag_02);
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EXPECT_EQ(flag_02->CurrentValue(), "new_str_value");
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EXPECT_EQ(flag_02->DefaultValue(), "dflt");
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}
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// --------------------------------------------------------------------
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TEST_F(CommandLineFlagTest, TestParseFromCurrentValue) {
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std::string err;
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auto* flag_01 = absl::FindCommandLineFlag("int_flag");
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EXPECT_FALSE(
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flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "11", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11);
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EXPECT_FALSE(
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flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "-123", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
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EXPECT_FALSE(
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flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "xyz", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
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EXPECT_EQ(err, "Illegal value 'xyz' specified for flag 'int_flag'");
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EXPECT_FALSE(
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flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "A1", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
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EXPECT_EQ(err, "Illegal value 'A1' specified for flag 'int_flag'");
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EXPECT_FALSE(
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flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "0x10", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 16);
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EXPECT_FALSE(
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flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "011", flags::SET_FLAGS_VALUE, flags::kCommandLine, err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11);
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EXPECT_TRUE(flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
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EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err));
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EXPECT_EQ(err, "Illegal value '' specified for flag 'int_flag'");
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auto* flag_02 = absl::FindCommandLineFlag("string_flag");
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_02, "xyz", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(absl::GetFlag(FLAGS_string_flag), "xyz");
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_02, "", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err));
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EXPECT_EQ(absl::GetFlag(FLAGS_string_flag), "");
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}
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// --------------------------------------------------------------------
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TEST_F(CommandLineFlagTest, TestParseFromDefaultValue) {
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std::string err;
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auto* flag_01 = absl::FindCommandLineFlag("int_flag");
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "111", flags::SET_FLAGS_DEFAULT, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(flag_01->DefaultValue(), "111");
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auto* flag_02 = absl::FindCommandLineFlag("string_flag");
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_02, "abc", flags::SET_FLAGS_DEFAULT, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(flag_02->DefaultValue(), "abc");
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}
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// --------------------------------------------------------------------
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TEST_F(CommandLineFlagTest, TestParseFromIfDefault) {
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std::string err;
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auto* flag_01 = absl::FindCommandLineFlag("int_flag");
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "22", flags::SET_FLAG_IF_DEFAULT, flags::kProgrammaticChange,
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err))
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<< err;
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 22);
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "33", flags::SET_FLAG_IF_DEFAULT, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 22);
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// EXPECT_EQ(err, "ERROR: int_flag is already set to 22");
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// Reset back to default value
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "201", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
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err));
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EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
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*flag_01, "33", flags::SET_FLAG_IF_DEFAULT, flags::kProgrammaticChange,
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err));
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EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 201);
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// EXPECT_EQ(err, "ERROR: int_flag is already set to 201");
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}
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} // namespace
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