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diff --git a/src/mesh/assimp-master/test/unit/utMaterialSystem.cpp b/src/mesh/assimp-master/test/unit/utMaterialSystem.cpp
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+++ b/src/mesh/assimp-master/test/unit/utMaterialSystem.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 "Material/MaterialSystem.h"
+#include <assimp/scene.h>
+
+using namespace ::std;
+using namespace ::Assimp;
+
+class MaterialSystemTest : public ::testing::Test {
+public:
+    virtual void SetUp() { this->pcMat = new aiMaterial(); }
+    virtual void TearDown() { delete this->pcMat; }
+
+protected:
+    aiMaterial *pcMat;
+};
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testFloatProperty) {
+    float pf = 150392.63f;
+    this->pcMat->AddProperty(&pf, 1, "testKey1");
+    pf = 0.0f;
+
+    EXPECT_EQ(AI_SUCCESS, pcMat->Get("testKey1", 0, 0, pf));
+    EXPECT_EQ(150392.63f, pf);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testFloatArrayProperty) {
+    float pf[] = { 0.0f, 1.0f, 2.0f, 3.0f };
+    unsigned int pMax = sizeof(pf) / sizeof(float);
+    this->pcMat->AddProperty(pf, pMax, "testKey2");
+    pf[0] = pf[1] = pf[2] = pf[3] = 12.0f;
+
+    EXPECT_EQ(AI_SUCCESS, pcMat->Get("testKey2", 0, 0, pf, &pMax));
+    EXPECT_EQ(sizeof(pf) / sizeof(float), static_cast<size_t>(pMax));
+    EXPECT_TRUE(!pf[0] && 1.0f == pf[1] && 2.0f == pf[2] && 3.0f == pf[3]);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testIntProperty) {
+    int pf = 15039263;
+    this->pcMat->AddProperty(&pf, 1, "testKey3");
+    pf = 12;
+
+    EXPECT_EQ(AI_SUCCESS, pcMat->Get("testKey3", 0, 0, pf));
+    EXPECT_EQ(15039263, pf);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testIntArrayProperty) {
+    int pf[] = { 0, 1, 2, 3 };
+    unsigned int pMax = sizeof(pf) / sizeof(int);
+    this->pcMat->AddProperty(pf, pMax, "testKey4");
+    pf[0] = pf[1] = pf[2] = pf[3] = 12;
+
+    EXPECT_EQ(AI_SUCCESS, pcMat->Get("testKey4", 0, 0, pf, &pMax));
+    EXPECT_EQ(sizeof(pf) / sizeof(int), pMax);
+    EXPECT_TRUE(!pf[0] && 1 == pf[1] && 2 == pf[2] && 3 == pf[3]);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testColorProperty) {
+    aiColor4D clr;
+    clr.r = 2.0f;
+    clr.g = 3.0f;
+    clr.b = 4.0f;
+    clr.a = 5.0f;
+    this->pcMat->AddProperty(&clr, 1, "testKey5");
+    clr.b = 1.0f;
+    clr.a = clr.g = clr.r = 0.0f;
+
+    EXPECT_EQ(AI_SUCCESS, pcMat->Get("testKey5", 0, 0, clr));
+    EXPECT_TRUE(clr.r == 2.0f && clr.g == 3.0f && clr.b == 4.0f && clr.a == 5.0f);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testStringProperty) {
+    aiString s;
+    s.Set("Hello, this is a small test");
+    this->pcMat->AddProperty(&s, "testKey6");
+    s.Set("358358");
+    EXPECT_EQ(AI_SUCCESS, pcMat->Get("testKey6", 0, 0, s));
+    EXPECT_STREQ("Hello, this is a small test", s.data);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(MaterialSystemTest, testMaterialNameAccess) {
+    aiMaterial *mat = new aiMaterial();
+    EXPECT_NE(nullptr, mat);
+
+    aiString name = mat->GetName();
+    const int retValue(strncmp(name.C_Str(), AI_DEFAULT_MATERIAL_NAME, name.length));
+    EXPECT_EQ(0, retValue);
+
+    delete mat;
+}