assimp/test/unit/utObjTools.cpp

/*
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Open Asset Import Library (assimp)
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#include "AssetLib/Obj/ObjFileParser.h"
#include "AssetLib/Obj/ObjTools.h"
#include "UnitTestPCH.h"

using namespace ::Assimp;

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

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

    ~TestObjFileParser() = default;

    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);
}