catch2/projects/SelfTest/UsageTests/EnumToString.tests.cpp
2019-04-21 20:15:26 +03:00

121 lines
4.3 KiB
C++

#include "catch.hpp"
namespace {
// Enum without user-provided stream operator
enum Enum1 { Enum1Value0, Enum1Value1 };
// Enum with user-provided stream operator
enum Enum2 { Enum2Value0, Enum2Value1 };
std::ostream& operator<<( std::ostream& os, Enum2 v ) {
return os << "E2{" << static_cast<int>(v) << "}";
}
} // end anonymous namespace
TEST_CASE( "toString(enum)", "[toString][enum]" ) {
Enum1 e0 = Enum1Value0;
CHECK( ::Catch::Detail::stringify(e0) == "0" );
Enum1 e1 = Enum1Value1;
CHECK( ::Catch::Detail::stringify(e1) == "1" );
}
TEST_CASE( "toString(enum w/operator<<)", "[toString][enum]" ) {
Enum2 e0 = Enum2Value0;
CHECK( ::Catch::Detail::stringify(e0) == "E2{0}" );
Enum2 e1 = Enum2Value1;
CHECK( ::Catch::Detail::stringify(e1) == "E2{1}" );
}
// Enum class without user-provided stream operator
namespace {
enum class EnumClass1 { EnumClass1Value0, EnumClass1Value1 };
// Enum class with user-provided stream operator
enum class EnumClass2 { EnumClass2Value0, EnumClass2Value1 };
std::ostream& operator<<( std::ostream& os, EnumClass2 e2 ) {
switch( static_cast<int>( e2 ) ) {
case static_cast<int>( EnumClass2::EnumClass2Value0 ):
return os << "E2/V0";
case static_cast<int>( EnumClass2::EnumClass2Value1 ):
return os << "E2/V1";
default:
return os << "Unknown enum value " << static_cast<int>( e2 );
}
}
} // end anonymous namespace
TEST_CASE( "toString(enum class)", "[toString][enum][enumClass]" ) {
EnumClass1 e0 = EnumClass1::EnumClass1Value0;
CHECK( ::Catch::Detail::stringify(e0) == "0" );
EnumClass1 e1 = EnumClass1::EnumClass1Value1;
CHECK( ::Catch::Detail::stringify(e1) == "1" );
}
TEST_CASE( "toString(enum class w/operator<<)", "[toString][enum][enumClass]" ) {
EnumClass2 e0 = EnumClass2::EnumClass2Value0;
CHECK( ::Catch::Detail::stringify(e0) == "E2/V0" );
EnumClass2 e1 = EnumClass2::EnumClass2Value1;
CHECK( ::Catch::Detail::stringify(e1) == "E2/V1" );
EnumClass2 e3 = static_cast<EnumClass2>(10);
CHECK( ::Catch::Detail::stringify(e3) == "Unknown enum value 10" );
}
enum class EnumClass3 { Value1, Value2, Value3, Value4 };
REGISTER_ENUM( EnumClass3, EnumClass3::Value1, EnumClass3::Value2, EnumClass3::Value3 )
TEST_CASE( "REGISTER_ENUM" ) {
using Catch::Detail::stringify;
REQUIRE( stringify( EnumClass3::Value1 ) == "Value1" );
REQUIRE( stringify( EnumClass3::Value2 ) == "Value2" );
REQUIRE( stringify( EnumClass3::Value3 ) == "Value3" );
REQUIRE( stringify( EnumClass3::Value4 ) == "{** unexpected enum value **}" );
EnumClass3 ec3 = EnumClass3 ::Value2;
REQUIRE( stringify( ec3 ) == "Value2" );
}
#include "internal/catch_interfaces_enum_values_registry.h"
TEST_CASE( "EnumInfo" ) {
auto& hub = Catch::getMutableRegistryHub();
auto& reg = hub.getMutableEnumValuesRegistry();
auto const& enumInfo = reg.registerEnum( "EnumName", "EnumName::Value1, EnumName::Value2", {0, 1} );
CHECK( enumInfo.lookup(0) == "Value1" );
CHECK( enumInfo.lookup(1) == "Value2" );
CHECK( enumInfo.lookup(3) == "{** unexpected enum value **}" );
}
#include "internal/catch_enum_values_registry.h"
TEST_CASE( "parseEnums", "[Strings][enums]" ) {
using namespace Catch::Matchers;
using Catch::Detail::parseEnums;
SECTION( "No enums" )
CHECK_THAT( parseEnums( "" ), Equals( std::vector<std::string>{} ) );
SECTION( "One enum value" ) {
CHECK_THAT( parseEnums( "ClassName::EnumName::Value1" ), Equals(std::vector<std::string>{"Value1"} ) );
CHECK_THAT( parseEnums( "Value1" ), Equals( std::vector<std::string>{"Value1"} ) );
CHECK_THAT( parseEnums( "EnumName::Value1" ), Equals(std::vector<std::string>{"Value1"} ) );
}
SECTION( "Multiple enum values" ) {
CHECK_THAT( parseEnums( "ClassName::EnumName::Value1, ClassName::EnumName::Value2" ),
Equals( std::vector<std::string>{"Value1", "Value2"} ) );
CHECK_THAT( parseEnums( "ClassName::EnumName::Value1, ClassName::EnumName::Value2, ClassName::EnumName::Value3" ),
Equals( std::vector<std::string>{"Value1", "Value2", "Value3"} ) );
CHECK_THAT( parseEnums( "ClassName::EnumName::Value1,ClassName::EnumName::Value2 , ClassName::EnumName::Value3" ),
Equals( std::vector<std::string>{"Value1", "Value2", "Value3"} ) );
}
}