* Adjustment: Initial CMake reworking.

Engine/lib/assimp/test/unit/Common/uiScene.cpp

@@ -0,0 +1,109 @@
+/*
+---------------------------------------------------------------------------
+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 <assimp/scene.h>
+#include <assimp/SceneCombiner.h>
+
+using namespace Assimp;
+
+class utScene : public ::testing::Test {
+protected:
+	aiScene *scene;
+
+    void SetUp() override {
+		scene = new aiScene;
+    }
+
+    void TearDown() override {
+		delete scene;
+		scene = nullptr;
+    }
+};
+
+TEST_F(utScene, findNodeTest) {
+	scene->mRootNode = new aiNode();
+	scene->mRootNode->mName.Set("test");
+	aiNode *child = new aiNode;
+	child->mName.Set("child");
+	scene->mRootNode->addChildren(1, &child);
+	aiNode *found = scene->mRootNode->FindNode("child");
+	EXPECT_EQ(child, found);
+}
+
+TEST_F(utScene, sceneHasContentTest) {
+    EXPECT_FALSE(scene->HasAnimations());
+	EXPECT_FALSE(scene->HasMaterials());
+	EXPECT_FALSE(scene->HasMeshes());
+	EXPECT_FALSE(scene->HasCameras());
+	EXPECT_FALSE(scene->HasLights());
+	EXPECT_FALSE(scene->HasTextures());
+}
+
+TEST_F(utScene, getShortFilenameTest) {
+	std::string long_filename1 = "foo_bar/name";
+    const char *name1 = scene->GetShortFilename(long_filename1.c_str());
+	EXPECT_NE(nullptr, name1);
+
+    std::string long_filename2 = "foo_bar\\name";
+    const char *name2 = scene->GetShortFilename(long_filename2.c_str());
+	EXPECT_NE(nullptr, name2);
+}
+
+TEST_F(utScene, deepCopyTest) {
+    scene->mRootNode = new aiNode();
+    
+    scene->mNumMeshes = 1;
+    scene->mMeshes = new aiMesh *[scene->mNumMeshes] ();
+    scene->mMeshes[0] = new aiMesh ();
+
+    scene->mMeshes[0]->SetTextureCoordsName (0, aiString ("test"));
+
+    {
+        aiScene* copied = nullptr;
+        SceneCombiner::CopyScene(&copied,scene);
+        delete copied;
+    }
+}
+
+TEST_F(utScene, getEmbeddedTextureTest) {
+}

Engine/lib/assimp/test/unit/Common/utAssertHandler.cpp

@@ -0,0 +1,110 @@
+/*
+---------------------------------------------------------------------------
+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"
+
+/// Ensure this test has asserts on, even if the build type doesn't have asserts by default.
+#if !defined(ASSIMP_BUILD_DEBUG)
+#define ASSIMP_BUILD_DEBUG
+#endif
+
+#include <assimp/ai_assert.h>
+#include <code/Common/AssertHandler.h>
+
+namespace
+{
+    /// An exception which is thrown by the testAssertHandler
+    struct TestAssertException
+    {
+        TestAssertException(const char* failedExpression, const char* file, int line)
+            : m_failedExpression(failedExpression)
+            , m_file(file)
+            , m_line(line)
+        {
+        }
+
+        std::string m_failedExpression;
+        std::string m_file;
+        int m_line;
+    };
+
+    /// Swap the default handler, which aborts, by one which throws.
+    void testAssertHandler(const char* failedExpression, const char* file, int line)
+    {
+        throw TestAssertException(failedExpression, file, line);
+    }
+
+    /// Ensure that the default assert handler is restored after the test is finished.
+    struct ReplaceHandlerScope
+    {
+        ReplaceHandlerScope()
+        {
+            Assimp::setAiAssertHandler(testAssertHandler);
+        }
+
+        ~ReplaceHandlerScope()
+        {
+            Assimp::setAiAssertHandler(Assimp::defaultAiAssertHandler);
+        }
+    };
+}
+
+TEST(utAssertHandler, replaceWithThrow)
+{
+    ReplaceHandlerScope scope;
+
+    try
+    {
+        ai_assert((2 + 2 == 5) && "Sometimes people put messages here");
+        EXPECT_TRUE(false);
+    }
+    catch(const TestAssertException& e)
+    {
+        EXPECT_STREQ(e.m_failedExpression.c_str(), "(2 + 2 == 5) && \"Sometimes people put messages here\"");
+        EXPECT_STREQ(e.m_file.c_str(), __FILE__);
+        EXPECT_GT(e.m_line, 0);
+        EXPECT_LT(e.m_line, __LINE__);
+    }
+    catch(...)
+    {
+        EXPECT_TRUE(false);
+    }
+}

Engine/lib/assimp/test/unit/Common/utBase64.cpp

@@ -0,0 +1,72 @@
+/*
+---------------------------------------------------------------------------
+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 "TestIOSystem.h"
+
+#include <assimp/Base64.hpp>
+
+using namespace std;
+using namespace Assimp;
+
+class Base64Test : public ::testing::Test {
+public:
+    virtual void SetUp() {
+    }
+
+    virtual void TearDown() {
+    }
+};
+
+static const std::vector<uint8_t> assimpStringBinary = { 97, 115, 115, 105, 109, 112 };
+static const std::string assimpStringEncoded = "YXNzaW1w";
+
+TEST_F( Base64Test, encodeTest ) {
+    EXPECT_EQ( "", Base64::Encode (std::vector<uint8_t>{}) );
+    EXPECT_EQ( "Vg==", Base64::Encode (std::vector<uint8_t>{ 86 }) );
+    EXPECT_EQ( assimpStringEncoded, Base64::Encode (assimpStringBinary) );
+}
+
+TEST_F( Base64Test, decodeTest ) {
+    EXPECT_EQ( std::vector<uint8_t> {}, Base64::Decode ("") );
+    EXPECT_EQ( std::vector<uint8_t> { 86 }, Base64::Decode ("Vg==") );
+    EXPECT_EQ( assimpStringBinary, Base64::Decode (assimpStringEncoded) );
+}

Engine/lib/assimp/test/unit/Common/utLineSplitter.cpp

@@ -0,0 +1,71 @@
+/*
+---------------------------------------------------------------------------
+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 <assimp/LineSplitter.h>
+#include <assimp/DefaultIOSystem.h>
+#include <string>
+
+using namespace Assimp;
+
+class utLineSplitter : public ::testing::Test {
+    // empty
+};
+
+TEST_F(utLineSplitter, tokenizetest) {
+    DefaultIOSystem fs;
+    IOStream* file = fs.Open(ASSIMP_TEST_MODELS_DIR"/ParsingFiles/linesplitter_tokenizetest.txt", "rb");
+
+    StreamReaderLE stream(file);
+    LineSplitter myLineSplitter(stream);
+}
+
+TEST_F( utLineSplitter, issue212Test) {
+    DefaultIOSystem fs;
+    IOStream* file = fs.Open(ASSIMP_TEST_MODELS_DIR"/ParsingFiles/linesplitter_emptyline_test.txt", "rb");
+
+    StreamReaderLE stream(file);
+    LineSplitter myLineSplitter(stream);
+    myLineSplitter++;
+    EXPECT_THROW( myLineSplitter++, std::logic_error );
+}

Engine/lib/assimp/test/unit/Common/utMesh.cpp

@@ -0,0 +1,97 @@
+/*
+---------------------------------------------------------------------------
+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 <assimp/mesh.h>
+
+using namespace Assimp;
+
+class utMesh : public ::testing::Test {
+protected:
+  aiMesh* mesh = nullptr;
+
+  void SetUp() override {
+    mesh = new aiMesh;
+  }
+
+  void TearDown() override {
+    delete mesh;
+    mesh = nullptr;
+  }
+};
+
+TEST_F(utMesh, emptyMeshHasNoContentTest) {
+  EXPECT_EQ(0u, mesh->mName.length);
+  EXPECT_FALSE(mesh->HasPositions());
+  EXPECT_FALSE(mesh->HasFaces());
+  EXPECT_FALSE(mesh->HasNormals());
+  EXPECT_FALSE(mesh->HasTangentsAndBitangents());
+  EXPECT_FALSE(mesh->HasVertexColors(0));
+  EXPECT_FALSE(mesh->HasVertexColors(AI_MAX_NUMBER_OF_COLOR_SETS));
+  EXPECT_FALSE(mesh->HasTextureCoords(0));
+  EXPECT_FALSE(mesh->HasTextureCoords(AI_MAX_NUMBER_OF_TEXTURECOORDS));
+  EXPECT_EQ(0u, mesh->GetNumUVChannels());
+  EXPECT_EQ(0u, mesh->GetNumColorChannels());
+  EXPECT_FALSE(mesh->HasBones());
+  EXPECT_FALSE(mesh->HasTextureCoordsName(0));
+  EXPECT_FALSE(mesh->HasTextureCoordsName(AI_MAX_NUMBER_OF_TEXTURECOORDS));
+}
+
+TEST_F(utMesh, setTextureCoordsName) {
+  EXPECT_FALSE(mesh->HasTextureCoordsName(0));
+  const aiString texcoords_name("texcoord_name");
+  mesh->SetTextureCoordsName(0, texcoords_name);
+  EXPECT_TRUE(mesh->HasTextureCoordsName(0u));
+  EXPECT_FALSE(mesh->HasTextureCoordsName(1u));
+  ASSERT_NE(nullptr, mesh->mTextureCoordsNames);
+  ASSERT_NE(nullptr, mesh->mTextureCoordsNames[0]);
+  EXPECT_STREQ(texcoords_name.C_Str(), mesh->mTextureCoordsNames[0]->C_Str());
+  EXPECT_STREQ(texcoords_name.C_Str(), mesh->GetTextureCoordsName(0)->C_Str());
+
+  // Now clear the name
+  mesh->SetTextureCoordsName(0, aiString());
+  EXPECT_FALSE(mesh->HasTextureCoordsName(0));
+  ASSERT_NE(nullptr, mesh->mTextureCoordsNames);
+  EXPECT_EQ(nullptr, mesh->mTextureCoordsNames[0]);
+  EXPECT_EQ(nullptr, mesh->GetTextureCoordsName(0));
+}
+

Engine/lib/assimp/test/unit/Common/utSpatialSort.cpp

@@ -0,0 +1,120 @@
+/*
+---------------------------------------------------------------------------
+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 <assimp/SpatialSort.h>
+
+using namespace Assimp;
+
+class utSpatialSort : public ::testing::Test {
+public
+        :
+    aiVector3D *vecs;
+
+protected:
+    void SetUp() override {
+        ::srand(static_cast<unsigned>(time(0)));
+        vecs = new aiVector3D[100];
+        for (size_t i = 0; i < 100; ++i) {
+            vecs[i].x = static_cast<float>(rand()) / (static_cast<float>(RAND_MAX / 100));
+            vecs[i].y = static_cast<float>(rand()) / (static_cast<float>(RAND_MAX / 100));
+            vecs[i].z = static_cast<float>(rand()) / (static_cast<float>(RAND_MAX / 100));
+        }
+    }
+
+    void TearDown() override {
+        delete[] vecs;
+    }
+};
+
+TEST_F( utSpatialSort, findIdenticalsTest ) {
+    SpatialSort sSort;
+    sSort.Fill(vecs, 100, sizeof(aiVector3D));
+
+    std::vector<unsigned int> indices;
+    sSort.FindIdenticalPositions(vecs[0], indices);
+    EXPECT_EQ(1u, indices.size());
+}
+
+TEST_F(utSpatialSort, findPositionsTest) {
+    SpatialSort sSort;
+    sSort.Fill(vecs, 100, sizeof(aiVector3D));
+
+    std::vector<unsigned int> indices;
+    sSort.FindPositions(vecs[0], 0.01f, indices);
+    EXPECT_EQ(1u, indices.size());
+}
+
+TEST_F(utSpatialSort, highlyDisplacedPositionsTest) {
+    // Make a cube of positions, and then query it using the SpatialSort object.
+    constexpr unsigned int verticesPerAxis = 10;
+    constexpr ai_real step = 0.001f;
+    // Note the large constant offset here.
+    constexpr ai_real offset = 5000.0f - (0.5f * verticesPerAxis * step);
+    constexpr unsigned int totalNumPositions = verticesPerAxis * verticesPerAxis * verticesPerAxis;
+    aiVector3D* positions = new aiVector3D[totalNumPositions];
+    for (unsigned int x = 0; x < verticesPerAxis; ++x) {
+        for (unsigned int y = 0; y < verticesPerAxis; ++y) {
+            for (unsigned int z = 0; z < verticesPerAxis; ++z) {
+                const unsigned int index = (x * verticesPerAxis * verticesPerAxis) + (y * verticesPerAxis) + z;
+                positions[index] = aiVector3D(offset + (x * step), offset + (y * step), offset + (z * step));
+            }
+        }
+    }
+
+    SpatialSort sSort;
+    sSort.Fill(positions, totalNumPositions, sizeof(aiVector3D));
+
+    // Enough to find a point and its 6 immediate neighbors, but not any other point.
+    const ai_real epsilon = 1.1f * step;
+    std::vector<unsigned int> indices;
+    // Iterate through the _interior_ points of the cube.
+    for (unsigned int x = 1; x < verticesPerAxis - 1; ++x) {
+        for (unsigned int y = 1; y < verticesPerAxis - 1; ++y) {
+            for (unsigned int z = 1; z < verticesPerAxis - 1; ++z) {
+                const unsigned int index = (x * verticesPerAxis * verticesPerAxis) + (y * verticesPerAxis) + z;
+                sSort.FindPositions(positions[index], epsilon, indices);
+                ASSERT_EQ(7u, indices.size());
+            }
+        }
+    }
+    delete[] positions;
+}

Engine/lib/assimp/test/unit/Common/utStandardShapes.cpp

@@ -0,0 +1,57 @@
+/*
+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 <assimp/mesh.h>
+#include <assimp/StandardShapes.h>
+
+using namespace Assimp;
+
+class utStandardShapes : public ::testing::Test {
+    // empty
+};
+
+TEST_F( utStandardShapes, testMakeMesh ) {
+    // Make sphere positions
+    std::vector<aiVector3D> positions;
+    Assimp::StandardShapes::MakeSphere(1, positions);
+
+    // Make mesh
+    const auto numIndicesPerPrimitive = 3u;
+    aiMesh *aiMeshPtr = Assimp::StandardShapes::MakeMesh(positions, numIndicesPerPrimitive);
+
+    // The mNumIndices member of the second face is now incorrect
+    const auto& face = aiMeshPtr->mFaces[0];
+    EXPECT_EQ(face.mNumIndices, numIndicesPerPrimitive);
+    delete aiMeshPtr;
+}
+

Engine/lib/assimp/test/unit/Common/utXmlParser.cpp

@@ -0,0 +1,86 @@
+/*-------------------------------------------------------------------------
+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 <assimp/XmlParser.h>
+#include <assimp/DefaultIOStream.h>
+#include <assimp/DefaultIOSystem.h>
+
+using namespace Assimp;
+
+class utXmlParser : public ::testing::Test {
+public:
+    utXmlParser() :
+            Test(),
+            mIoSystem() {
+        // empty
+    }
+
+protected:
+    DefaultIOSystem mIoSystem;
+};
+
+TEST_F(utXmlParser, parse_xml_test) {
+    XmlParser parser;
+    std::string filename = ASSIMP_TEST_MODELS_DIR "/X3D/ComputerKeyboard.x3d";
+    std::unique_ptr<IOStream> stream(mIoSystem.Open(filename.c_str(), "rb"));
+    EXPECT_NE(stream.get(), nullptr);
+    bool result = parser.parse(stream.get());
+    EXPECT_TRUE(result);
+}
+
+TEST_F(utXmlParser, parse_xml_and_traverse_test) {
+    XmlParser parser;
+    std::string filename = ASSIMP_TEST_MODELS_DIR "/X3D/ComputerKeyboard.x3d";
+    std::unique_ptr<IOStream> stream(mIoSystem.Open(filename.c_str(), "rb"));
+    EXPECT_NE(stream.get(), nullptr);
+    bool result = parser.parse(stream.get());
+    EXPECT_TRUE(result);
+    XmlNode root = parser.getRootNode();
+
+    XmlNodeIterator nodeIt(root, XmlNodeIterator::PreOrderMode);
+    const size_t numNodes = nodeIt.size();
+    bool empty = nodeIt.isEmpty();
+    EXPECT_FALSE(empty);
+    EXPECT_NE(numNodes, 0U);
+    XmlNode node;
+    while (nodeIt.getNext(node)) {
+        const std::string nodeName = node.name();
+        EXPECT_FALSE(nodeName.empty());
+    }
+}