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diff --git a/src/mesh/assimp-master/test/unit/utObjTools.cpp b/src/mesh/assimp-master/test/unit/utObjTools.cpp
new file mode 100644
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+++ b/src/mesh/assimp-master/test/unit/utObjTools.cpp
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+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+#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() {
+        // 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);
+}