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diff --git a/src/mesh/assimp-master/test/unit/utFindInvalidData.cpp b/src/mesh/assimp-master/test/unit/utFindInvalidData.cpp
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+++ b/src/mesh/assimp-master/test/unit/utFindInvalidData.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 "UnitTestPCH.h"
+
+#include "PostProcessing/FindInvalidDataProcess.h"
+#include <assimp/mesh.h>
+
+using namespace std;
+using namespace Assimp;
+
+class utFindInvalidDataProcess : public ::testing::Test {
+public:
+    utFindInvalidDataProcess() :
+            Test(), mMesh(nullptr), mProcess(nullptr) {
+        // empty
+    }
+
+protected:
+    virtual void SetUp();
+    virtual void TearDown();
+
+protected:
+    aiMesh *mMesh;
+    FindInvalidDataProcess *mProcess;
+};
+
+// ------------------------------------------------------------------------------------------------
+void utFindInvalidDataProcess::SetUp() {
+    ASSERT_TRUE(AI_MAX_NUMBER_OF_TEXTURECOORDS >= 3);
+
+    mProcess = new FindInvalidDataProcess();
+    mMesh = new aiMesh();
+
+    mMesh->mNumVertices = 1000;
+    mMesh->mVertices = new aiVector3D[1000];
+    for (unsigned int i = 0; i < 1000; ++i) {
+        mMesh->mVertices[i] = aiVector3D((float)i);
+    }
+
+    mMesh->mNormals = new aiVector3D[1000];
+    for (unsigned int i = 0; i < 1000; ++i) {
+        mMesh->mNormals[i] = aiVector3D((float)i + 1);
+    }
+
+    mMesh->mTangents = new aiVector3D[1000];
+    for (unsigned int i = 0; i < 1000; ++i) {
+        mMesh->mTangents[i] = aiVector3D((float)i);
+    }
+
+    mMesh->mBitangents = new aiVector3D[1000];
+    for (unsigned int i = 0; i < 1000; ++i) {
+        mMesh->mBitangents[i] = aiVector3D((float)i);
+    }
+
+    for (unsigned int a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a) {
+        mMesh->mTextureCoords[a] = new aiVector3D[1000];
+        for (unsigned int i = 0; i < 1000; ++i) {
+            mMesh->mTextureCoords[a][i] = aiVector3D((float)i);
+        }
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+void utFindInvalidDataProcess::TearDown() {
+    delete mProcess;
+    delete mMesh;
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(utFindInvalidDataProcess, testStepNegativeResult) {
+    for ( size_t i=0; i<mMesh->mNumVertices; ++i ) {
+        mMesh->mNormals[i].x = mMesh->mNormals[i].y = mMesh->mNormals[i].z =0;
+        mMesh->mBitangents[i].x = mMesh->mBitangents[i].y = mMesh->mBitangents[i].z = 0;
+    }
+
+    mMesh->mTextureCoords[2][455] = aiVector3D(std::numeric_limits<float>::quiet_NaN());
+
+    mProcess->ProcessMesh(mMesh);
+
+    EXPECT_TRUE(NULL != mMesh->mVertices);
+    EXPECT_EQ(NULL, mMesh->mNormals);
+    EXPECT_EQ(NULL, mMesh->mTangents);
+    EXPECT_EQ(NULL, mMesh->mBitangents);
+
+    for (unsigned int i = 0; i < 2; ++i) {
+        EXPECT_TRUE(NULL != mMesh->mTextureCoords[i]);
+    }
+
+    for (unsigned int i = 2; i < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++i) {
+        EXPECT_EQ(NULL, mMesh->mTextureCoords[i]);
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(utFindInvalidDataProcess, testStepPositiveResult) {
+    mProcess->ProcessMesh(mMesh);
+
+    EXPECT_NE(nullptr, mMesh->mVertices);
+
+    EXPECT_NE(nullptr, mMesh->mNormals);
+    EXPECT_NE(nullptr, mMesh->mTangents);
+    EXPECT_NE(nullptr, mMesh->mBitangents);
+
+    for (unsigned int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++i) {
+        EXPECT_NE(nullptr, mMesh->mTextureCoords[i]);
+    }
+}