tvl-depot/absl/flags/internal/commandlineflag_test.cc

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Export of internal Abseil changes. -- 78293ba4eb4981991ae7e6edd25eb9245fcd7515 by Andy Soffer <asoffer@google.com>: internal changes PiperOrigin-RevId: 247073879 -- 7bd97e3aad0c3012b89a39392a6ad3f254e9f3c3 by Derek Mauro <dmauro@google.com>: Release commandline flags PiperOrigin-RevId: 247065920 -- 2a991849fd7b140a43b073076d194b61533fd199 by Tom Manshreck <shreck@google.com>: Add documentation for built-in usage flags PiperOrigin-RevId: 247058863 -- 14157b0de45841706bbd631284191fd94c313db9 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 247058292 -- ed67e0a80468596e30540b367727a250fa415b68 by Abseil Team <absl-team@google.com>: Internal Change. PiperOrigin-RevId: 246828655 -- e1bc8c2aa3f90b3d56c55c5b7244e718c919265d by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 246822325 -- 907a68f287199f749cb9bdb48571b50bc34731e1 by Eric Fiselier <ericwf@google.com>: Accept vector<bool>::reference in StrCat and friends. Converting vector<bool>::reference to alphanum requires two user defined conversions, which isn't allowed. In order to accept this, we need a special constructor that is only enabled for the bool proxy types. PiperOrigin-RevId: 246626732 -- fe4295fa95cc65dee8c881ba12dd8f516e68c40d by Abseil Team <absl-team@google.com>: Clarify the proper way to define AbslHashValue, and fix confusing indentation. PiperOrigin-RevId: 246406528 -- d7174681a72d4a25c8fd2b4d9f515a0763eff87c by Gennadiy Rozental <rogeeff@google.com>: Internal change PiperOrigin-RevId: 246358214 -- a7fdc19683cf1a5885e9e1af52fcdb2db1eda53b by Abseil Team <absl-team@google.com>: Fix sample template instantiation. PiperOrigin-RevId: 246354617 -- 29a23c6835f872948d09b24d890385bf195bc995 by Abseil Team <absl-team@google.com>: Fix incorrectly copy-pasted static_assert in absl::optional::value_or The static_assert for a move-constructible type previously said the type must be copy-constructible. PiperOrigin-RevId: 246313827 -- 41884d5872d4ea2c67875b00144b8c8a5859a295 by Greg Falcon <gfalcon@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 245418790 -- 7f90a7f94cdd5e21232c749efe952a750b5c43a2 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 245412658 -- 730a329cf047d54b46971fce1781edd857208c2a by Greg Falcon <gfalcon@google.com>: internal change PiperOrigin-RevId: 245293234 -- cf0216be6338200cbb18167d3f3b2e98e372be77 by Greg Falcon <gfalcon@google.com>: Internal change PiperOrigin-RevId: 245288164 GitOrigin-RevId: 78293ba4eb4981991ae7e6edd25eb9245fcd7515 Change-Id: I5ea9a852c36c722bae2d6be65fb7f72473d94ab6
2019-05-07 21:56:42 +02:00
//
// 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/internal/commandlineflag.h"
#include "gtest/gtest.h"
#include "absl/flags/flag.h"
#include "absl/flags/internal/registry.h"
#include "absl/memory/memory.h"
#include "absl/strings/match.h"
#include "absl/strings/str_cat.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");
namespace {
namespace flags = absl::flags_internal;
class CommandLineFlagTest : public testing::Test {
protected:
void SetUp() override { flag_saver_ = absl::make_unique<flags::FlagSaver>(); }
void TearDown() override { flag_saver_.reset(); }
private:
std::unique_ptr<flags::FlagSaver> flag_saver_;
};
TEST_F(CommandLineFlagTest, TestAttributesAccessMethods) {
auto* flag_01 = flags::FindCommandLineFlag("int_flag");
ASSERT_TRUE(flag_01);
EXPECT_EQ(flag_01->Name(), "int_flag");
EXPECT_EQ(flag_01->Help(), "int_flag help");
EXPECT_EQ(flag_01->Typename(), "");
EXPECT_TRUE(!flag_01->IsRetired());
EXPECT_TRUE(flag_01->IsOfType<int>());
EXPECT_TRUE(absl::EndsWith(
flag_01->Filename(),
"absl/flags/internal/commandlineflag_test.cc"));
auto* flag_02 = flags::FindCommandLineFlag("string_flag");
ASSERT_TRUE(flag_02);
EXPECT_EQ(flag_02->Name(), "string_flag");
EXPECT_EQ(flag_02->Help(), "string_flag help");
EXPECT_EQ(flag_02->Typename(), "");
EXPECT_TRUE(!flag_02->IsRetired());
EXPECT_TRUE(flag_02->IsOfType<std::string>());
EXPECT_TRUE(absl::EndsWith(
flag_02->Filename(),
"absl/flags/internal/commandlineflag_test.cc"));
auto* flag_03 = flags::FindRetiredFlag("bool_retired_flag");
ASSERT_TRUE(flag_03);
EXPECT_EQ(flag_03->Name(), "bool_retired_flag");
EXPECT_EQ(flag_03->Help(), "");
EXPECT_EQ(flag_03->Typename(), "");
EXPECT_TRUE(flag_03->IsRetired());
EXPECT_TRUE(flag_03->IsOfType<bool>());
EXPECT_EQ(flag_03->Filename(), "RETIRED");
}
// --------------------------------------------------------------------
TEST_F(CommandLineFlagTest, TestValueAccessMethods) {
absl::SetFlag(&FLAGS_int_flag, 301);
auto* flag_01 = flags::FindCommandLineFlag("int_flag");
ASSERT_TRUE(flag_01);
EXPECT_EQ(flag_01->CurrentValue(), "301");
EXPECT_EQ(flag_01->DefaultValue(), "201");
absl::SetFlag(&FLAGS_string_flag, "new_str_value");
auto* flag_02 = flags::FindCommandLineFlag("string_flag");
ASSERT_TRUE(flag_02);
EXPECT_EQ(flag_02->CurrentValue(), "new_str_value");
EXPECT_EQ(flag_02->DefaultValue(), "dflt");
}
// --------------------------------------------------------------------
TEST_F(CommandLineFlagTest, TestSetFromStringCurrentValue) {
std::string err;
auto* flag_01 = flags::FindCommandLineFlag("int_flag");
EXPECT_FALSE(flag_01->on_command_line);
EXPECT_TRUE(flag_01->SetFromString("11", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11);
EXPECT_FALSE(flag_01->on_command_line);
EXPECT_TRUE(flag_01->SetFromString("-123", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
EXPECT_FALSE(flag_01->on_command_line);
EXPECT_TRUE(!flag_01->SetFromString("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(flag_01->on_command_line);
EXPECT_TRUE(!flag_01->SetFromString("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(flag_01->on_command_line);
EXPECT_TRUE(flag_01->SetFromString("0x10", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 16);
EXPECT_FALSE(flag_01->on_command_line);
EXPECT_TRUE(flag_01->SetFromString("011", flags::SET_FLAGS_VALUE,
flags::kCommandLine, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11);
EXPECT_TRUE(flag_01->on_command_line);
EXPECT_TRUE(!flag_01->SetFromString("", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_EQ(err, "Illegal value '' specified for flag 'int_flag'");
auto* flag_02 = flags::FindCommandLineFlag("string_flag");
EXPECT_TRUE(flag_02->SetFromString("xyz", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_string_flag), "xyz");
EXPECT_TRUE(flag_02->SetFromString("", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_string_flag), "");
}
// --------------------------------------------------------------------
TEST_F(CommandLineFlagTest, TestSetFromStringDefaultValue) {
std::string err;
auto* flag_01 = flags::FindCommandLineFlag("int_flag");
EXPECT_TRUE(flag_01->SetFromString("111", flags::SET_FLAGS_DEFAULT,
flags::kProgrammaticChange, &err));
EXPECT_EQ(flag_01->DefaultValue(), "111");
auto* flag_02 = flags::FindCommandLineFlag("string_flag");
EXPECT_TRUE(flag_02->SetFromString("abc", flags::SET_FLAGS_DEFAULT,
flags::kProgrammaticChange, &err));
EXPECT_EQ(flag_02->DefaultValue(), "abc");
}
// --------------------------------------------------------------------
TEST_F(CommandLineFlagTest, TestSetFromStringIfDefault) {
std::string err;
auto* flag_01 = flags::FindCommandLineFlag("int_flag");
EXPECT_TRUE(flag_01->SetFromString("22", flags::SET_FLAG_IF_DEFAULT,
flags::kProgrammaticChange, &err))
<< err;
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 22);
EXPECT_TRUE(flag_01->SetFromString("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(flag_01->SetFromString("201", flags::SET_FLAGS_VALUE,
flags::kProgrammaticChange, &err));
EXPECT_TRUE(flag_01->SetFromString("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