catch2/projects/SelfTest/TestMain.cpp

/*
 *  Created by Phil on 22/10/2010.
 *  Copyright 2010 Two Blue Cubes Ltd
 *
 *  Distributed under the Boost Software License, Version 1.0. (See accompanying
 *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 */

#define CATCH_CONFIG_MAIN
#include "catch.hpp"

// Some example tag aliases
CATCH_REGISTER_TAG_ALIAS( "[@nhf]", "[failing]~[.]" )
CATCH_REGISTER_TAG_ALIAS( "[@tricky]", "[tricky]~[.]" )


#ifdef __clang__
#pragma clang diagnostic ignored "-Wpadded"
#pragma clang diagnostic ignored "-Wweak-vtables"
#endif


template<size_t size>
void parseIntoConfig( const char * (&argv)[size], Catch::ConfigData& config ) {
    Catch::Clara::CommandLine<Catch::ConfigData> parser = Catch::makeCommandLineParser();
    parser.parseInto( size, argv, config );
}

template<size_t size>
std::string parseIntoConfigAndReturnError( const char * (&argv)[size], Catch::ConfigData& config ) {
    try {
        parseIntoConfig( argv, config );
        FAIL( "expected exception" );
    }
    catch( std::exception& ex ) {
        return ex.what();
    }
    return "";
}

inline Catch::TestCase fakeTestCase( const char* name, const char* desc = "" ){ return Catch::makeTestCase( NULL, "", name, desc, CATCH_INTERNAL_LINEINFO ); }

TEST_CASE( "Process can be configured on command line", "[config][command-line]" ) {

    Catch::ConfigData config;

    SECTION( "default - no arguments", "" ) {
        const char* argv[] = { "test" };
        CHECK_NOTHROW( parseIntoConfig( argv, config ) );
        
        CHECK( config.shouldDebugBreak == false );
        CHECK( config.abortAfter == -1 );
        CHECK( config.noThrow == false );
        CHECK( config.reporterName.empty() );
    }
    
    SECTION( "test lists", "" ) {
        SECTION( "1 test", "Specify one test case using" ) {
            const char* argv[] = { "test", "test1" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            Catch::Config cfg( config );
            REQUIRE( cfg.testSpec().matches( fakeTestCase( "notIncluded" ) ) == false );
            REQUIRE( cfg.testSpec().matches( fakeTestCase( "test1" ) ) );
        }
        SECTION( "Specify one test case exclusion using exclude:", "" ) {
            const char* argv[] = { "test", "exclude:test1" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            Catch::Config cfg( config );
            REQUIRE( cfg.testSpec().matches( fakeTestCase( "test1" ) ) == false );
            REQUIRE( cfg.testSpec().matches( fakeTestCase( "alwaysIncluded" ) ) );
        }

        SECTION( "Specify one test case exclusion using ~", "" ) {
            const char* argv[] = { "test", "~test1" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            Catch::Config cfg( config );
            REQUIRE( cfg.testSpec().matches( fakeTestCase( "test1" ) ) == false );
            REQUIRE( cfg.testSpec().matches( fakeTestCase( "alwaysIncluded" ) ) );
        }

    }
    
    SECTION( "reporter", "" ) {
        SECTION( "-r/console", "" ) {
            const char* argv[] = { "test", "-r", "console" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );
            
            REQUIRE( config.reporterName == "console" );
        }
        SECTION( "-r/xml", "" ) {
            const char* argv[] = { "test", "-r", "xml" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );
            
            REQUIRE( config.reporterName == "xml" );
        }
        SECTION( "--reporter/junit", "" ) {
            const char* argv[] = { "test", "--reporter", "junit" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );
            
            REQUIRE( config.reporterName == "junit" );
        }
    }
    
    SECTION( "debugger", "" ) {
        SECTION( "-b", "" ) {
            const char* argv[] = { "test", "-b" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );
            
            REQUIRE( config.shouldDebugBreak == true );
        }
        SECTION( "--break", "" ) {
            const char* argv[] = { "test", "--break" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );
            
            REQUIRE( config.shouldDebugBreak );
        }
    }
        
    SECTION( "abort", "" ) {
        SECTION( "-a aborts after first failure", "" ) {
            const char* argv[] = { "test", "-a" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            REQUIRE( config.abortAfter == 1 );
        }
        SECTION( "-x 2 aborts after two failures", "" ) {
            const char* argv[] = { "test", "-x", "2" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            REQUIRE( config.abortAfter == 2 );
        }
        SECTION( "-x must be greater than zero", "" ) {
            const char* argv[] = { "test", "-x", "0" };
            REQUIRE_THAT( parseIntoConfigAndReturnError( argv, config ), Contains( "greater than zero" ) );
        }
        SECTION( "-x must be numeric", "" ) {
            const char* argv[] = { "test", "-x", "oops" };
            REQUIRE_THAT( parseIntoConfigAndReturnError( argv, config ), Contains( "-x" ) );
        }
    }
    
    SECTION( "nothrow", "" ) {
        SECTION( "-e", "" ) {
            const char* argv[] = { "test", "-e" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            REQUIRE( config.noThrow == true );
        }
        SECTION( "--nothrow", "" ) {
            const char* argv[] = { "test", "--nothrow" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            REQUIRE( config.noThrow == true );
        }
    }

    SECTION( "output filename", "" ) {
        SECTION( "-o filename", "" ) {
            const char* argv[] = { "test", "-o", "filename.ext" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            REQUIRE( config.outputFilename == "filename.ext" );
        }
        SECTION( "--out", "" ) {
            const char* argv[] = { "test", "--out", "filename.ext" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            REQUIRE( config.outputFilename == "filename.ext" );
        }
    }

    SECTION( "combinations", "" ) {
        SECTION( "Single character flags can be combined", "" ) {
            const char* argv[] = { "test", "-abe" };
            CHECK_NOTHROW( parseIntoConfig( argv, config ) );

            CHECK( config.abortAfter == 1 );
            CHECK( config.shouldDebugBreak );
            CHECK( config.noThrow == true );
        }
    }        
}


TEST_CASE( "Long strings can be wrapped", "[wrap]" ) {

    using namespace Catch;
    SECTION( "plain string", "" ) {
        // guide:                 123456789012345678
        std::string testString = "one two three four";
        
        SECTION( "No wrapping", "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 80 ) ).toString() == testString );
            CHECK( Text( testString, TextAttributes().setWidth( 18 ) ).toString() == testString );
        }
        SECTION( "Wrapped once", "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 17 ) ).toString() == "one two three\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 16 ) ).toString() == "one two three\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 14 ) ).toString() == "one two three\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 13 ) ).toString() == "one two three\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 12 ) ).toString() == "one two\nthree four" );
        }
        SECTION( "Wrapped twice", "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 9 ) ).toString() == "one two\nthree\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 8 ) ).toString() == "one two\nthree\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 7 ) ).toString() == "one two\nthree\nfour" );
        }
        SECTION( "Wrapped three times", "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 6 ) ).toString() == "one\ntwo\nthree\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 5 ) ).toString() == "one\ntwo\nthree\nfour" );
        }
        SECTION( "Short wrap", "" ) {
            CHECK( Text( "abcdef", TextAttributes().setWidth( 4 ) ).toString() == "abc-\ndef" );
            CHECK( Text( "abcdefg", TextAttributes().setWidth( 4 ) ).toString() == "abc-\ndefg" );
            CHECK( Text( "abcdefgh", TextAttributes().setWidth( 4 ) ).toString() == "abc-\ndef-\ngh" );

            CHECK( Text( testString, TextAttributes().setWidth( 4 ) ).toString() == "one\ntwo\nthr-\nee\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 3 ) ).toString() == "one\ntwo\nth-\nree\nfo-\nur" );
        }
        SECTION( "As container", "" ) {
            Text text( testString, TextAttributes().setWidth( 6 ) );
            REQUIRE( text.size() == 4 );
            CHECK( text[0] == "one" );
            CHECK( text[1] == "two" );
            CHECK( text[2] == "three" );
            CHECK( text[3] == "four" );
        }
        SECTION( "Indent first line differently", "" ) {
            Text text( testString, TextAttributes()
                                        .setWidth( 10 )
                                        .setIndent( 4 )
                                        .setInitialIndent( 1 ) );
            CHECK( text.toString() == " one two\n    three\n    four" );
        }
        
    }
    
    SECTION( "With newlines", "" ) {
        
        // guide:                 1234567890123456789
        std::string testString = "one two\nthree four";
        
        SECTION( "No wrapping" , "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 80 ) ).toString() == testString );
            CHECK( Text( testString, TextAttributes().setWidth( 18 ) ).toString() == testString );
            CHECK( Text( testString, TextAttributes().setWidth( 10 ) ).toString() == testString );
        }
        SECTION( "Trailing newline" , "" ) {
            CHECK( Text( "abcdef\n", TextAttributes().setWidth( 10 ) ).toString() == "abcdef\n" );
            CHECK( Text( "abcdef", TextAttributes().setWidth( 6 ) ).toString() == "abcdef" );
            CHECK( Text( "abcdef\n", TextAttributes().setWidth( 6 ) ).toString() == "abcdef\n" );
        }
        SECTION( "Wrapped once", "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 9 ) ).toString() == "one two\nthree\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 8 ) ).toString() == "one two\nthree\nfour" );
            CHECK( Text( testString, TextAttributes().setWidth( 7 ) ).toString() == "one two\nthree\nfour" );
        }
        SECTION( "Wrapped twice", "" ) {
            CHECK( Text( testString, TextAttributes().setWidth( 6 ) ).toString() == "one\ntwo\nthree\nfour" );
        }
    }
    
    SECTION( "With tabs", "" ) {

        // guide:                 1234567890123456789
        std::string testString = "one two \tthree four five six";
        
        CHECK( Text( testString, TextAttributes().setWidth( 15 ) ).toString()
            == "one two three\n        four\n        five\n        six" );
    }
    
    
}

using namespace Catch;

class ColourString {
public:

    struct ColourIndex {
        ColourIndex( Colour::Code _colour, std::size_t _fromIndex, std::size_t _toIndex )
        :   colour( _colour ),
            fromIndex( _fromIndex ),
            toIndex( _toIndex )
        {}

        Colour::Code colour;
        std::size_t fromIndex;
        std::size_t toIndex;
    };

    ColourString( std::string const& _string )
    : string( _string )
    {}
    ColourString( std::string const& _string, std::vector<ColourIndex> const& _colours )
    : string( _string ), colours( _colours )
    {}
    
    ColourString& addColour( Colour::Code colour, int _index ) {
        colours.push_back( ColourIndex( colour,
                                        resolveRelativeIndex( _index ),
                                        resolveRelativeIndex( _index )+1 ) );
        return *this;
    }
    ColourString& addColour( Colour::Code colour, int _fromIndex, int _toIndex ) {
        colours.push_back( ColourIndex( colour,
                                        resolveRelativeIndex(_fromIndex),
                                        resolveLastRelativeIndex( _toIndex ) ) );
        return *this;
    }
    
    void writeToStream( std::ostream& _stream ) const {
        std::size_t last = 0;
        for( std::size_t i = 0; i < colours.size(); ++i ) {
            ColourIndex const& index = colours[i];
            if( index.fromIndex > last )
                _stream << string.substr( last, index.fromIndex-last );
            {
                Colour colourGuard( index.colour );
                _stream << string.substr( index.fromIndex, index.toIndex-index.fromIndex );
            }
            last = index.toIndex;
        }
        if( last < string.size() )
            _stream << string.substr( last );        
    }
    friend std::ostream& operator << ( std::ostream& _stream, ColourString const& _colourString ) {
        _colourString.writeToStream( _stream );
        return _stream;
    }

private:

    std::size_t resolveLastRelativeIndex( int _index ) {
        std::size_t index = resolveRelativeIndex( _index );
        return index == 0 ? string.size() : index;
    }
    std::size_t resolveRelativeIndex( int _index ) {
        return static_cast<std::size_t>( _index >= 0
            ? _index
            : static_cast<int>( string.size() )+_index );
    }
    std::string string;
    std::vector<ColourIndex> colours;
};

// !TBD: This will be folded into Text class
TEST_CASE( "Strings can be rendered with colour", "[.colour]" ) {
    
    {
        ColourString cs( "hello" );
        cs  .addColour( Colour::Red, 0 )
            .addColour( Colour::Green, -1 );

        Catch::cout() << cs << std::endl;
    }

    {
        ColourString cs( "hello" );
        cs  .addColour( Colour::Blue, 1, -2 );
        
        Catch::cout() << cs << std::endl;
    }
    
}

TEST_CASE( "Text can be formatted using the Text class", "" ) {
    
    CHECK( Text( "hi there" ).toString() == "hi there" );
    
    TextAttributes narrow;
    narrow.setWidth( 6 );
    
    CHECK( Text( "hi there", narrow ).toString() == "hi\nthere" );
}

TEST_CASE( "Long text is truncted", "[Text][Truncated]" ) {

    std::string longLine( 90, '*' );

    std::ostringstream oss;
    for(int i = 0; i < 600; ++i )
        oss << longLine << longLine << "\n";
    Text t( oss.str() );
    CHECK_THAT( t.toString(), EndsWith( "... message truncated due to excessive size" ) );
    
}