src/tint/utils/cli/cli_test.cc - dawn - Git at Google

 // Copyright 2023 The Dawn & Tint Authors
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 // 1. Redistributions of source code must retain the above copyright notice, this
 //    list of conditions and the following disclaimer.
 //
 // 2. Redistributions in binary form must reproduce the above copyright notice,
 //    this list of conditions and the following disclaimer in the documentation
 //    and/or other materials provided with the distribution.
 //
 // 3. Neither the name of the copyright holder nor the names of its
 //    contributors may be used to endorse or promote products derived from
 //    this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #include "src/tint/utils/cli/cli.h"

 #include <sstream>

 #include "gmock/gmock.h"
 #include "src/tint/utils/text/string.h"

 #include "src/tint/utils/containers/transform.h"  // Used by ToStringList()

 namespace tint::cli {
 namespace {

 // Workaround for https://github.com/google/googletest/issues/3081
 // Remove when using C++20
 template <size_t N>
 Vector<std::string, N> ToStringList(const Vector<std::string_view, N>& views) {
     return Transform(views, [](std::string_view view) { return std::string(view); });
 }

 using CLITest = testing::Test;

 TEST_F(CLITest, ShowHelp_ValueWithParameter) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("my_option", "sets the awesome value");

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --my_option <value>  sets the awesome value
 )");
 }

 TEST_F(CLITest, ShowHelp_ValueWithParameter_ExplicitEqualsFormFalse) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("my_option", "sets the awesome value");

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out, false);
     EXPECT_EQ(out.str(), R"(
 --my_option <value>  sets the awesome value
 )");
 }

 TEST_F(CLITest, ShowHelp_ValueWithParameter_ExplicitEqualsFormTrue) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("my_option", "sets the awesome value");

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out, true);
     EXPECT_EQ(out.str(), R"(
 --my_option=<value>  sets the awesome value
 )");
 }

 TEST_F(CLITest, ShowHelp_ValueWithAlias) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("my_option", "sets the awesome value", Alias{"alias"});

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --my_option <value>  sets the awesome value
 --alias              alias for --my_option
 )");
 }
 TEST_F(CLITest, ShowHelp_ValueWithShortName) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("my_option", "sets the awesome value", ShortName{"a"});

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --my_option <value>  sets the awesome value
  -a                  short name for --my_option
 )");
 }

 TEST_F(CLITest, ShowHelp_MultilineDesc) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("an-option", R"(this is a
 multi-line description
 for an option
 )");

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --an-option <value>  this is a
                      multi-line description
                      for an option

 )");
 }

 TEST_F(CLITest, ShowHelp_LongName) {
     OptionSet opts;
     opts.Add<ValueOption<int>>("an-option-with-a-really-really-long-name",
                                "this is an option that has a silly long name", ShortName{"a"});

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --an-option-with-a-really-really-long-name <value>
      this is an option that has a silly long name
  -a  short name for --an-option-with-a-really-really-long-name
 )");
 }

 TEST_F(CLITest, ShowHelp_EnumValue) {
     enum class E { X, Y, Z };

     OptionSet opts;
     opts.Add<EnumOption<E>>("my_enum_option", "sets the awesome value",
                             Vector{
                                 EnumName(E::X, "X"),
                                 EnumName(E::Y, "Y"),
                                 EnumName(E::Z, "Z"),
                             });

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --my_enum_option <X|Y|Z>  sets the awesome value
 )");
 }

 TEST_F(CLITest, ShowHelp_MixedValues) {
     enum class E { X, Y, Z };

     OptionSet opts;

     opts.Add<ValueOption<int>>("option-a", "an integer");
     opts.Add<BoolOption>("option-b", "a boolean");
     opts.Add<EnumOption<E>>("option-c", "sets the awesome value",
                             Vector{
                                 EnumName(E::X, "X"),
                                 EnumName(E::Y, "Y"),
                                 EnumName(E::Z, "Z"),
                             });

     std::stringstream out;
     out << "\n";
     opts.ShowHelp(out);
     EXPECT_EQ(out.str(), R"(
 --option-a <value>  an integer
 --option-b <value>  a boolean
 --option-c <X|Y|Z>  sets the awesome value
 )");
 }

 TEST_F(CLITest, UnknownFlag) {
     OptionSet opts;
     opts.Add<BoolOption>("my_option", "a boolean value");

     auto res = opts.Parse(Split("--myoption false", " "));
     ASSERT_NE(res, Success);
     EXPECT_EQ(res.Failure().reason.Str(), R"(error: unknown flag: --myoption
 Did you mean '--my_option'?)");
 }

 TEST_F(CLITest, UnknownFlag_Ignored) {
     OptionSet opts;
     auto& opt = opts.Add<BoolOption>("my_option", "a boolean value");

     ParseOptions parse_opts;
     parse_opts.ignore_unknown = true;

     auto res = opts.Parse(Split("--myoption false", " "), parse_opts);
     ASSERT_EQ(res, Success);
     EXPECT_EQ(opt.value, std::nullopt);
 }

 TEST_F(CLITest, ParseBool_Flag) {
     OptionSet opts;
     auto& opt = opts.Add<BoolOption>("my_option", "a boolean value");

     auto res = opts.Parse(Split("--my_option unconsumed", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre("unconsumed"));
     EXPECT_EQ(opt.value, true);
 }

 TEST_F(CLITest, ParseBool_ExplicitTrue) {
     OptionSet opts;
     auto& opt = opts.Add<BoolOption>("my_option", "a boolean value");

     auto res = opts.Parse(Split("--my_option true", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, true);
 }

 TEST_F(CLITest, ParseBool_ExplicitFalse) {
     OptionSet opts;
     auto& opt = opts.Add<BoolOption>("my_option", "a boolean value", Default{true});

     auto res = opts.Parse(Split("--my_option false", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, false);
 }

 TEST_F(CLITest, ParseInt) {
     OptionSet opts;
     auto& opt = opts.Add<ValueOption<int>>("my_option", "an integer value");

     auto res = opts.Parse(Split("--my_option 42", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, 42);
 }

 TEST_F(CLITest, ParseUint64) {
     OptionSet opts;
     auto& opt = opts.Add<ValueOption<uint64_t>>("my_option", "a uint64_t value");

     auto res = opts.Parse(Split("--my_option 1000000", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, 1000000);
 }

 TEST_F(CLITest, ParseFloat) {
     OptionSet opts;
     auto& opt = opts.Add<ValueOption<float>>("my_option", "a float value");

     auto res = opts.Parse(Split("--my_option 1.25", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, 1.25f);
 }

 TEST_F(CLITest, ParseString) {
     OptionSet opts;
     auto& opt = opts.Add<StringOption>("my_option", "a string value");

     auto res = opts.Parse(Split("--my_option blah", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, "blah");
 }

 TEST_F(CLITest, ParseEnum) {
     enum class E { X, Y, Z };

     OptionSet opts;
     auto& opt = opts.Add<EnumOption<E>>("my_option", "sets the awesome value",
                                         Vector{
                                             EnumName(E::X, "X"),
                                             EnumName(E::Y, "Y"),
                                             EnumName(E::Z, "Z"),
                                         });
     auto res = opts.Parse(Split("--my_option Y", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, E::Y);
 }

 TEST_F(CLITest, ParseShortName) {
     OptionSet opts;
     auto& opt = opts.Add<ValueOption<int>>("my_option", "an integer value", ShortName{"o"});

     auto res = opts.Parse(Split("-o 42", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, 42);
 }

 TEST_F(CLITest, ParseUnconsumed) {
     OptionSet opts;
     auto& opt = opts.Add<ValueOption<int32_t>>("my_option", "a int32_t value");

     auto res = opts.Parse(Split("abc --my_option -123 def", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre("abc", "def"));
     EXPECT_EQ(opt.value, -123);
 }

 TEST_F(CLITest, ParseUsingEquals) {
     OptionSet opts;
     auto& opt = opts.Add<ValueOption<int>>("my_option", "an int value");

     auto res = opts.Parse(Split("--my_option=123", " "));
     ASSERT_EQ(res, Success);
     EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
     EXPECT_EQ(opt.value, 123);
 }

 TEST_F(CLITest, SetValueToDefault) {
     OptionSet opts;
     auto& opt = opts.Add<BoolOption>("my_option", "a boolean value", Default{true});

     auto res = opts.Parse(tint::Empty);
     ASSERT_EQ(res, Success);
     EXPECT_EQ(opt.value, true);
 }

 }  // namespace
 }  // namespace tint::cli
	// Copyright 2023 The Dawn & Tint Authors
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// 1. Redistributions of source code must retain the above copyright notice, this
	// list of conditions and the following disclaimer.
	//
	// 2. Redistributions in binary form must reproduce the above copyright notice,
	// this list of conditions and the following disclaimer in the documentation
	// and/or other materials provided with the distribution.
	//
	// 3. Neither the name of the copyright holder nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
	// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include "src/tint/utils/cli/cli.h"

	#include <sstream>

	#include "gmock/gmock.h"
	#include "src/tint/utils/text/string.h"

	#include "src/tint/utils/containers/transform.h" // Used by ToStringList()

	namespace tint::cli {
	namespace {

	// Workaround for https://github.com/google/googletest/issues/3081
	// Remove when using C++20
	template <size_t N>
	Vector<std::string, N> ToStringList(const Vector<std::string_view, N>& views) {
	return Transform(views, [](std::string_view view) { return std::string(view); });
	}

	using CLITest = testing::Test;

	TEST_F(CLITest, ShowHelp_ValueWithParameter) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("my_option", "sets the awesome value");

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--my_option <value> sets the awesome value
	)");
	}

	TEST_F(CLITest, ShowHelp_ValueWithParameter_ExplicitEqualsFormFalse) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("my_option", "sets the awesome value");

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out, false);
	EXPECT_EQ(out.str(), R"(
	--my_option <value> sets the awesome value
	)");
	}

	TEST_F(CLITest, ShowHelp_ValueWithParameter_ExplicitEqualsFormTrue) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("my_option", "sets the awesome value");

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out, true);
	EXPECT_EQ(out.str(), R"(
	--my_option=<value> sets the awesome value
	)");
	}

	TEST_F(CLITest, ShowHelp_ValueWithAlias) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("my_option", "sets the awesome value", Alias{"alias"});

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--my_option <value> sets the awesome value
	--alias alias for --my_option
	)");
	}
	TEST_F(CLITest, ShowHelp_ValueWithShortName) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("my_option", "sets the awesome value", ShortName{"a"});

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--my_option <value> sets the awesome value
	-a short name for --my_option
	)");
	}

	TEST_F(CLITest, ShowHelp_MultilineDesc) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("an-option", R"(this is a
	multi-line description
	for an option
	)");

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--an-option <value> this is a
	multi-line description
	for an option

	)");
	}

	TEST_F(CLITest, ShowHelp_LongName) {
	OptionSet opts;
	opts.Add<ValueOption<int>>("an-option-with-a-really-really-long-name",
	"this is an option that has a silly long name", ShortName{"a"});

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--an-option-with-a-really-really-long-name <value>
	this is an option that has a silly long name
	-a short name for --an-option-with-a-really-really-long-name
	)");
	}

	TEST_F(CLITest, ShowHelp_EnumValue) {
	enum class E { X, Y, Z };

	OptionSet opts;
	opts.Add<EnumOption<E>>("my_enum_option", "sets the awesome value",
	Vector{
	EnumName(E::X, "X"),
	EnumName(E::Y, "Y"),
	EnumName(E::Z, "Z"),
	});

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--my_enum_option <X\|Y\|Z> sets the awesome value
	)");
	}

	TEST_F(CLITest, ShowHelp_MixedValues) {
	enum class E { X, Y, Z };

	OptionSet opts;

	opts.Add<ValueOption<int>>("option-a", "an integer");
	opts.Add<BoolOption>("option-b", "a boolean");
	opts.Add<EnumOption<E>>("option-c", "sets the awesome value",
	Vector{
	EnumName(E::X, "X"),
	EnumName(E::Y, "Y"),
	EnumName(E::Z, "Z"),
	});

	std::stringstream out;
	out << "\n";
	opts.ShowHelp(out);
	EXPECT_EQ(out.str(), R"(
	--option-a <value> an integer
	--option-b <value> a boolean
	--option-c <X\|Y\|Z> sets the awesome value
	)");
	}

	TEST_F(CLITest, UnknownFlag) {
	OptionSet opts;
	opts.Add<BoolOption>("my_option", "a boolean value");

	auto res = opts.Parse(Split("--myoption false", " "));
	ASSERT_NE(res, Success);
	EXPECT_EQ(res.Failure().reason.Str(), R"(error: unknown flag: --myoption
	Did you mean '--my_option'?)");
	}

	TEST_F(CLITest, UnknownFlag_Ignored) {
	OptionSet opts;
	auto& opt = opts.Add<BoolOption>("my_option", "a boolean value");

	ParseOptions parse_opts;
	parse_opts.ignore_unknown = true;

	auto res = opts.Parse(Split("--myoption false", " "), parse_opts);
	ASSERT_EQ(res, Success);
	EXPECT_EQ(opt.value, std::nullopt);
	}

	TEST_F(CLITest, ParseBool_Flag) {
	OptionSet opts;
	auto& opt = opts.Add<BoolOption>("my_option", "a boolean value");

	auto res = opts.Parse(Split("--my_option unconsumed", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre("unconsumed"));
	EXPECT_EQ(opt.value, true);
	}

	TEST_F(CLITest, ParseBool_ExplicitTrue) {
	OptionSet opts;
	auto& opt = opts.Add<BoolOption>("my_option", "a boolean value");

	auto res = opts.Parse(Split("--my_option true", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, true);
	}

	TEST_F(CLITest, ParseBool_ExplicitFalse) {
	OptionSet opts;
	auto& opt = opts.Add<BoolOption>("my_option", "a boolean value", Default{true});

	auto res = opts.Parse(Split("--my_option false", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, false);
	}

	TEST_F(CLITest, ParseInt) {
	OptionSet opts;
	auto& opt = opts.Add<ValueOption<int>>("my_option", "an integer value");

	auto res = opts.Parse(Split("--my_option 42", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, 42);
	}

	TEST_F(CLITest, ParseUint64) {
	OptionSet opts;
	auto& opt = opts.Add<ValueOption<uint64_t>>("my_option", "a uint64_t value");

	auto res = opts.Parse(Split("--my_option 1000000", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, 1000000);
	}

	TEST_F(CLITest, ParseFloat) {
	OptionSet opts;
	auto& opt = opts.Add<ValueOption<float>>("my_option", "a float value");

	auto res = opts.Parse(Split("--my_option 1.25", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, 1.25f);
	}

	TEST_F(CLITest, ParseString) {
	OptionSet opts;
	auto& opt = opts.Add<StringOption>("my_option", "a string value");

	auto res = opts.Parse(Split("--my_option blah", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, "blah");
	}

	TEST_F(CLITest, ParseEnum) {
	enum class E { X, Y, Z };

	OptionSet opts;
	auto& opt = opts.Add<EnumOption<E>>("my_option", "sets the awesome value",
	Vector{
	EnumName(E::X, "X"),
	EnumName(E::Y, "Y"),
	EnumName(E::Z, "Z"),
	});
	auto res = opts.Parse(Split("--my_option Y", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, E::Y);
	}

	TEST_F(CLITest, ParseShortName) {
	OptionSet opts;
	auto& opt = opts.Add<ValueOption<int>>("my_option", "an integer value", ShortName{"o"});

	auto res = opts.Parse(Split("-o 42", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, 42);
	}

	TEST_F(CLITest, ParseUnconsumed) {
	OptionSet opts;
	auto& opt = opts.Add<ValueOption<int32_t>>("my_option", "a int32_t value");

	auto res = opts.Parse(Split("abc --my_option -123 def", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre("abc", "def"));
	EXPECT_EQ(opt.value, -123);
	}

	TEST_F(CLITest, ParseUsingEquals) {
	OptionSet opts;
	auto& opt = opts.Add<ValueOption<int>>("my_option", "an int value");

	auto res = opts.Parse(Split("--my_option=123", " "));
	ASSERT_EQ(res, Success);
	EXPECT_THAT(ToStringList(res.Get()), testing::ElementsAre());
	EXPECT_EQ(opt.value, 123);
	}

	TEST_F(CLITest, SetValueToDefault) {
	OptionSet opts;
	auto& opt = opts.Add<BoolOption>("my_option", "a boolean value", Default{true});

	auto res = opts.Parse(tint::Empty);
	ASSERT_EQ(res, Success);
	EXPECT_EQ(opt.value, true);
	}

	} // namespace
	} // namespace tint::cli