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Diffstat (limited to 'absl/flags/commandlineflag_test.cc')
-rw-r--r-- | absl/flags/commandlineflag_test.cc | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/absl/flags/commandlineflag_test.cc b/absl/flags/commandlineflag_test.cc new file mode 100644 index 000000000000..585db4ba78a0 --- /dev/null +++ b/absl/flags/commandlineflag_test.cc @@ -0,0 +1,231 @@ +// +// Copyright 2019 The Abseil Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "absl/flags/commandlineflag.h" + +#include <memory> +#include <string> + +#include "gtest/gtest.h" +#include "absl/flags/flag.h" +#include "absl/flags/internal/commandlineflag.h" +#include "absl/flags/internal/private_handle_accessor.h" +#include "absl/flags/reflection.h" +#include "absl/flags/usage_config.h" +#include "absl/memory/memory.h" +#include "absl/strings/match.h" +#include "absl/strings/str_cat.h" +#include "absl/strings/string_view.h" + +ABSL_FLAG(int, int_flag, 201, "int_flag help"); +ABSL_FLAG(std::string, string_flag, "dflt", + absl::StrCat("string_flag", " help")); +ABSL_RETIRED_FLAG(bool, bool_retired_flag, false, "bool_retired_flag help"); + +// These are only used to test default values. +ABSL_FLAG(int, int_flag2, 201, ""); +ABSL_FLAG(std::string, string_flag2, "dflt", ""); + +namespace { + +namespace flags = absl::flags_internal; + +class CommandLineFlagTest : public testing::Test { + protected: + static void SetUpTestSuite() { + // Install a function to normalize filenames before this test is run. + absl::FlagsUsageConfig default_config; + default_config.normalize_filename = &CommandLineFlagTest::NormalizeFileName; + absl::SetFlagsUsageConfig(default_config); + } + + void SetUp() override { flag_saver_ = absl::make_unique<absl::FlagSaver>(); } + void TearDown() override { flag_saver_.reset(); } + + private: + static std::string NormalizeFileName(absl::string_view fname) { +#ifdef _WIN32 + std::string normalized(fname); + std::replace(normalized.begin(), normalized.end(), '\\', '/'); + fname = normalized; +#endif + return std::string(fname); + } + + std::unique_ptr<absl::FlagSaver> flag_saver_; +}; + +TEST_F(CommandLineFlagTest, TestAttributesAccessMethods) { + auto* flag_01 = absl::FindCommandLineFlag("int_flag"); + + ASSERT_TRUE(flag_01); + EXPECT_EQ(flag_01->Name(), "int_flag"); + EXPECT_EQ(flag_01->Help(), "int_flag help"); + EXPECT_TRUE(!flag_01->IsRetired()); + EXPECT_TRUE(flag_01->IsOfType<int>()); + EXPECT_TRUE(!flag_01->IsOfType<bool>()); + EXPECT_TRUE(!flag_01->IsOfType<std::string>()); + EXPECT_TRUE(absl::EndsWith(flag_01->Filename(), + "absl/flags/commandlineflag_test.cc")) + << flag_01->Filename(); + + auto* flag_02 = absl::FindCommandLineFlag("string_flag"); + + ASSERT_TRUE(flag_02); + EXPECT_EQ(flag_02->Name(), "string_flag"); + EXPECT_EQ(flag_02->Help(), "string_flag help"); + EXPECT_TRUE(!flag_02->IsRetired()); + EXPECT_TRUE(flag_02->IsOfType<std::string>()); + EXPECT_TRUE(!flag_02->IsOfType<bool>()); + EXPECT_TRUE(!flag_02->IsOfType<int>()); + EXPECT_TRUE(absl::EndsWith(flag_02->Filename(), + "absl/flags/commandlineflag_test.cc")) + << flag_02->Filename(); +} + +// -------------------------------------------------------------------- + +TEST_F(CommandLineFlagTest, TestValueAccessMethods) { + absl::SetFlag(&FLAGS_int_flag2, 301); + auto* flag_01 = absl::FindCommandLineFlag("int_flag2"); + + ASSERT_TRUE(flag_01); + EXPECT_EQ(flag_01->CurrentValue(), "301"); + EXPECT_EQ(flag_01->DefaultValue(), "201"); + + absl::SetFlag(&FLAGS_string_flag2, "new_str_value"); + auto* flag_02 = absl::FindCommandLineFlag("string_flag2"); + + ASSERT_TRUE(flag_02); + EXPECT_EQ(flag_02->CurrentValue(), "new_str_value"); + EXPECT_EQ(flag_02->DefaultValue(), "dflt"); +} + +// -------------------------------------------------------------------- + +TEST_F(CommandLineFlagTest, TestParseFromCurrentValue) { + std::string err; + + auto* flag_01 = absl::FindCommandLineFlag("int_flag"); + EXPECT_FALSE( + flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "11", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11); + EXPECT_FALSE( + flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "-123", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, + err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123); + EXPECT_FALSE( + flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "xyz", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, + err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123); + EXPECT_EQ(err, "Illegal value 'xyz' specified for flag 'int_flag'"); + EXPECT_FALSE( + flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "A1", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123); + EXPECT_EQ(err, "Illegal value 'A1' specified for flag 'int_flag'"); + EXPECT_FALSE( + flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "0x10", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, + err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 16); + EXPECT_FALSE( + flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "011", flags::SET_FLAGS_VALUE, flags::kCommandLine, err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11); + EXPECT_TRUE(flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01)); + + EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err)); + EXPECT_EQ(err, "Illegal value '' specified for flag 'int_flag'"); + + auto* flag_02 = absl::FindCommandLineFlag("string_flag"); + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_02, "xyz", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, + err)); + EXPECT_EQ(absl::GetFlag(FLAGS_string_flag), "xyz"); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_02, "", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, err)); + EXPECT_EQ(absl::GetFlag(FLAGS_string_flag), ""); +} + +// -------------------------------------------------------------------- + +TEST_F(CommandLineFlagTest, TestParseFromDefaultValue) { + std::string err; + + auto* flag_01 = absl::FindCommandLineFlag("int_flag"); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "111", flags::SET_FLAGS_DEFAULT, flags::kProgrammaticChange, + err)); + EXPECT_EQ(flag_01->DefaultValue(), "111"); + + auto* flag_02 = absl::FindCommandLineFlag("string_flag"); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_02, "abc", flags::SET_FLAGS_DEFAULT, flags::kProgrammaticChange, + err)); + EXPECT_EQ(flag_02->DefaultValue(), "abc"); +} + +// -------------------------------------------------------------------- + +TEST_F(CommandLineFlagTest, TestParseFromIfDefault) { + std::string err; + + auto* flag_01 = absl::FindCommandLineFlag("int_flag"); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "22", flags::SET_FLAG_IF_DEFAULT, flags::kProgrammaticChange, + err)) + << err; + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 22); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "33", flags::SET_FLAG_IF_DEFAULT, flags::kProgrammaticChange, + err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 22); + // EXPECT_EQ(err, "ERROR: int_flag is already set to 22"); + + // Reset back to default value + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "201", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, + err)); + + EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom( + *flag_01, "33", flags::SET_FLAG_IF_DEFAULT, flags::kProgrammaticChange, + err)); + EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 201); + // EXPECT_EQ(err, "ERROR: int_flag is already set to 201"); +} + +} // namespace |