assimp/test/unit/utObjTools.cpp

/*
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Open Asset Import Library (assimp)
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Copyright (c) 2006-2018, assimp team



All rights reserved.

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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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*/
#include "UnitTestPCH.h"
#include "ObjTools.h"
#include "ObjFileParser.h"

using namespace ::Assimp;

class utObjTools : public ::testing::Test {
    // empty
};

class TestObjFileParser : public ObjFileParser {
public:
    TestObjFileParser() : ObjFileParser(){
        // empty
    }

    ~TestObjFileParser() {
        // empty
    }
    
    void testCopyNextWord( char *pBuffer, size_t length ) {
        copyNextWord( pBuffer, length );
    }

    size_t testGetNumComponentsInDataDefinition() {
        return getNumComponentsInDataDefinition();
    }
};

TEST_F( utObjTools, skipDataLine_OneLine_Success ) {
    std::vector<char> buffer;
    std::string data( "v -0.5 -0.5 0.5\nend" );
    buffer.resize( data.size() );
    ::memcpy( &buffer[ 0 ], &data[ 0 ], data.size() );
    std::vector<char>::iterator itBegin( buffer.begin() ), itEnd( buffer.end() );
    unsigned int line = 0;
    std::vector<char>::iterator current = skipLine<std::vector<char>::iterator>( itBegin, itEnd, line );
    EXPECT_EQ( 'e', *current );
}

TEST_F( utObjTools, skipDataLine_TwoLines_Success ) {
    TestObjFileParser test_parser;
    std::string data( "vn -2.061493116917992e-15 -0.9009688496589661 \\\n-0.4338837265968323" );
    std::vector<char> buffer;
    buffer.resize( data.size() );
    ::memcpy( &buffer[ 0 ], &data[ 0 ], data.size() );
    test_parser.setBuffer( buffer );
    static const size_t Size = 4096UL;
    char data_buffer[ Size ];
    
    test_parser.testCopyNextWord( data_buffer, Size );
    EXPECT_EQ( 0, strncmp( data_buffer, "vn", 2 ) );

    test_parser.testCopyNextWord( data_buffer, Size );
    EXPECT_EQ( data_buffer[0], '-' );

    test_parser.testCopyNextWord( data_buffer, Size );
    EXPECT_EQ( data_buffer[0], '-' );

    test_parser.testCopyNextWord( data_buffer, Size );
    EXPECT_EQ( data_buffer[ 0 ], '-' );
}

TEST_F( utObjTools, countComponents_TwoLines_Success ) {
    TestObjFileParser test_parser;
    std::string data( "-2.061493116917992e-15 -0.9009688496589661 \\\n-0.4338837265968323" );
    std::vector<char> buffer;
    buffer.resize( data.size() + 1 );
    ::memcpy( &buffer[ 0 ], &data[ 0 ], data.size() );
    buffer[ buffer.size() - 1 ] = '\0';
    test_parser.setBuffer( buffer );

    size_t numComps = test_parser.testGetNumComponentsInDataDefinition();
    EXPECT_EQ( 3U, numComps );
}