Function listTests

tutorials/external/catch.hpp:9128–9160

namespace Catch {

    std::size_t listTests( Config const& config ) {
        TestSpec testSpec = config.testSpec();
        if( config.hasTestFilters() )
            Catch::cout() << "Matching test cases:\n";
        else {
            Catch::cout() << "All available test cases:\n";
        }

        auto matchedTestCases = filterTests( getAllTestCasesSorted( config ), testSpec, config );
        for( auto const& testCaseInfo : matchedTestCases ) {
            Colour::Code colour = testCaseInfo.isHidden()
                ? Colour::SecondaryText
                : Colour::None;
            Colour colourGuard( colour );

            Catch::cout() << Column( testCaseInfo.name ).initialIndent( 2 ).indent( 4 ) << "\n";
            if( config.verbosity() >= Verbosity::High ) {
                Catch::cout() << Column( Catch::Detail::stringify( testCaseInfo.lineInfo ) ).indent(4) << std::endl;
                std::string description = testCaseInfo.description;
                if( description.empty() )
                    description = "(NO DESCRIPTION)";
                Catch::cout() << Column( description ).indent(4) << std::endl;
            }
            if( !testCaseInfo.tags.empty() )
                Catch::cout() << Column( testCaseInfo.tagsAsString() ).indent( 6 ) << "\n";
        }

        if( !config.hasTestFilters() )
            Catch::cout() << pluralise( matchedTestCases.size(), "test case" ) << '\n' << std::endl;
        else
            Catch::cout() << pluralise( matchedTestCases.size(), "matching test case" ) << '\n' << std::endl;
        return matchedTestCases.size();
    }

    std::size_t listTestsNamesOnly( Config const& config ) {
        TestSpec testSpec = config.testSpec();