76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
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#include <argparse/argparse.hpp>
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#include <doctest.hpp>
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#include <sstream>
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using doctest::test_suite;
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TEST_CASE("Users can format help message" * test_suite("help")) {
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argparse::ArgumentParser program("test");
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SUBCASE("Simple arguments") {
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program.add_argument("input").help("positional input");
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program.add_argument("-c").help("optional input");
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}
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SUBCASE("Default values") {
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program.add_argument("-a").default_value(42);
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program.add_argument("-b").default_value(4.4e-7);
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program.add_argument("-c")
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.default_value(std::vector<int>{1, 2, 3, 4, 5})
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.nargs(5);
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program.add_argument("-d").default_value("I am a string");
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program.add_argument("-e").default_value(std::optional<float>{});
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program.add_argument("-f").default_value(false);
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}
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std::ostringstream s;
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s << program;
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REQUIRE_FALSE(s.str().empty());
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auto msg = program.help().str();
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REQUIRE(msg == s.str());
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}
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TEST_CASE("Users can override the help options" * test_suite("help")) {
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GIVEN("a program that meant to take -h as a normal option") {
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argparse::ArgumentParser program("test");
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program.add_argument("input");
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program.add_argument("-h").implicit_value('h').default_value('x');
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WHEN("provided -h without fulfilling other requirements") {
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THEN("validation fails") {
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REQUIRE_THROWS_AS(program.parse_args({"test", "-h"}),
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std::runtime_error);
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}
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}
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WHEN("provided arguments to all parameters") {
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program.parse_args({"test", "-h", "some input"});
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THEN("these parameters get their values") {
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REQUIRE(program["-h"] == 'h');
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REQUIRE(program.get("input") == "some input");
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}
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}
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}
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}
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TEST_CASE("Users can disable default -h/--help" * test_suite("help")) {
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argparse::ArgumentParser program("test", "1.0",
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argparse::default_arguments::version);
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REQUIRE_THROWS_AS(program.parse_args({"test", "-h"}), std::runtime_error);
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}
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TEST_CASE("Users can replace default -h/--help" * test_suite("help")) {
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argparse::ArgumentParser program("test", "1.0",
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argparse::default_arguments::version);
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std::stringstream buffer;
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program.add_argument("-h", "--help")
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.action([&](const auto &) { buffer << program; })
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.default_value(false)
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.implicit_value(true)
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.nargs(0);
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REQUIRE(buffer.str().empty());
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program.parse_args({"test", "--help"});
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REQUIRE_FALSE(buffer.str().empty());
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}
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