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Refactor how the RNG seed is parsed when handling cmdline

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This commit is contained in:
Martin Hořeňovský 2022-10-22 17:04:08 +02:00
parent d1e7544e9f
commit f1361ef624
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2 changed files with 36 additions and 16 deletions
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24
src/catch2/internal/catch_commandline.cpp
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@ -13,6 +13,7 @@
#include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
#include <catch2/interfaces/catch_interfaces_reporter_registry.hpp>
#include <catch2/internal/catch_console_colour.hpp>
#include <catch2/internal/catch_parse_numbers.hpp>
#include <catch2/internal/catch_reporter_spec_parser.hpp>
#include <fstream>
@ -77,23 +78,14 @@ namespace Catch {
return ParserResult::ok(ParseResultType::Matched);
}
CATCH_TRY {
std::size_t parsedTo = 0;
unsigned long parsedSeed = std::stoul(seed, &parsedTo, 0);
if (parsedTo != seed.size()) {
return ParserResult::runtimeError("Could not parse '" + seed + "' as seed");
}
// TODO: Ideally we could parse unsigned int directly,
// but the stdlib doesn't provide helper for that
// type. After this is refactored to use fixed size
// type, we should check the parsed value is in range
// of the underlying type.
config.rngSeed = static_cast<unsigned int>(parsedSeed);
return ParserResult::ok(ParseResultType::Matched);
} CATCH_CATCH_ANON(std::exception const&) {
return ParserResult::runtimeError("Could not parse '" + seed + "' as seed");
// TODO: ideally we should be parsing uint32_t directly
// fix this later when we add new parse overload
auto parsedSeed = parseUInt( seed, 0 );
if ( !parsedSeed ) {
return ParserResult::runtimeError( "Could not parse '" + seed + "' as seed" );
}
config.rngSeed = *parsedSeed;
return ParserResult::ok( ParseResultType::Matched );
};
auto const setDefaultColourMode = [&]( std::string const& colourMode ) {
Optional<ColourMode> maybeMode = Catch::Detail::stringToColourMode(toLower( colourMode ));

28
tests/SelfTest/IntrospectiveTests/CmdLine.tests.cpp
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@ -737,3 +737,31 @@ TEST_CASE("Win32 colour implementation is compile-time optional",
REQUIRE_FALSE( result );
#endif
}
TEST_CASE( "Parse rng seed in different formats", "[approvals][cli][rng-seed]" ) {
Catch::ConfigData config;
auto cli = Catch::makeCommandLineParser( config );
SECTION("well formed cases") {
char const* seed_string;
uint32_t seed_value;
// GCC-5 workaround
using gen_type = std::tuple<char const*, uint32_t>;
std::tie( seed_string, seed_value ) = GENERATE( table<char const*, uint32_t>({
gen_type{ "0xBEEF", 0xBEEF },
gen_type{ "12345678", 12345678 }
} ) );
CAPTURE( seed_string );
auto result = cli.parse( { "tests", "--rng-seed", seed_string } );
REQUIRE( result );
REQUIRE( config.rngSeed == seed_value );
}
SECTION( "Error cases" ) {
auto seed_string =
GENERATE( "0xSEED", "999999999999", "08888", "BEEF", "123 456" );
CAPTURE( seed_string );
REQUIRE_FALSE( cli.parse( { "tests", "--rng-seed", seed_string } ) );
}
}