Abseil Common Libraries (C++) (grcp 依赖)
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231 lines
8.2 KiB
231 lines
8.2 KiB
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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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