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https://github.com/KeqingMoe/argparse.git
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8201a18568
Before this change: 1. When the input is built-in string literal or cv-`char*`, `is_optional` constructs temporary `std::string` while `mNames` initializer is also constructing `std::string` due to the use of `std::initializer_list`. 2. When the input is `std::string_view`, doesn't compile. 3. When the input is `std::string`, `mNames` initializer moves `args`. If argument name is longer than `std::string`'s SSO buffer, bad thing will happen because `is_optional` will be accessing `args` in moved-from states. Because of the use of `strtol` which expects nul-terminated input, `is_*` series functions must take `std::string`. This restriction may be removed after AppleClang adds `<charconv>`. But for now, it complicates the patch. My solution is to create an array prvalue still, but use a array reference rather than `std::initializer_list` to refer to it, so that the code in delegated constructor can keep using fold expressions after the necessary `std::string` objects being created.
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
#pragma once
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#include <catch.hpp>
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#include <argparse.hpp>
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TEST_CASE("Parse toggle arguments with default value", "[optional_arguments]") {
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argparse::ArgumentParser program("test");
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program.add_argument("--verbose", "-v")
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.default_value(false)
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.implicit_value(true);
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program.parse_args({ "./test.exe" });
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REQUIRE(program.get<bool>("--verbose") == false);
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REQUIRE(program["--verbose"] == false);
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}
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TEST_CASE("Parse toggle arguments with implicit value", "[optional_arguments]") {
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argparse::ArgumentParser program("test");
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program.add_argument("--verbose")
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.default_value(false)
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.implicit_value(true);
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program.parse_args({ "./test.exe", "--verbose" });
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REQUIRE(program.get<bool>("--verbose") == true);
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REQUIRE(program["--verbose"] == true);
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REQUIRE(program["--verbose"] != false);
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}
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TEST_CASE("Parse multiple toggle arguments with implicit values", "[optional_arguments]") {
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argparse::ArgumentParser program("test");
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program.add_argument("-a")
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.default_value(false)
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.implicit_value(true);
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program.add_argument("-u")
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.default_value(false)
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.implicit_value(true);
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program.add_argument("-x")
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.default_value(false)
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.implicit_value(true);
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program.parse_args({ "./test.exe", "-a", "-x" });
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REQUIRE(program.get<bool>("-a") == true);
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REQUIRE(program.get<bool>("-u") == false);
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REQUIRE(program.get<bool>("-x") == true);
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}
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TEST_CASE("Parse arguments of different types", "[optional_arguments]") {
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using namespace std::literals;
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argparse::ArgumentParser program("test");
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program.add_argument("--this-argument-is-longer-than-any-sso-buffer-that-"
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"makes-sense-unless-your-cache-line-is-this-long"s);
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REQUIRE_NOTHROW(program.parse_args({"test"}));
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program.add_argument("-string"s, "-string-view"sv, "-builtin")
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.default_value(false)
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.implicit_value(true);
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program.parse_args({"test", "-string-view"});
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REQUIRE(program["-string"sv] == true);
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REQUIRE(program["-string-view"] == true);
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REQUIRE(program["-builtin"s] == true);
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}
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