Missing argument doesn't throw exception

[ThomasKrenn]

Hello
shouldn't missing arguments throw an exception?

Below is a very simple test case that fails to throw an exception.

TEST_CASE("Missing argument throw exception", "[args]")
{
    args::ArgumentParser parser("A test program.", "More text");
    args::Positional<std::string> input(parser, "input", "Compulsory input");
    REQUIRE_THROWS_AS(parser.ParseArgs(std::vector<std::string>{}), args::ParseError);
}

Best regards
Thomas

[Taywee]

Nope. That variable gets initialized via default construction, and you can check whether it was present using the boolean operator, if (input), as shown here.

If you want a required argument, you can mark it as such.