Add unit tests.

test/models/glTF/IncorrectVertexArrays/Cube_v1.gltf

@@ -204,7 +204,7 @@
           "name" : "TruncatedIndexedCube",
           "primitives" : [ {
              "attributes" : {
-                "POSITION" : "accessor_1"
+                "POSITION" : "accessor_6"
              },
              "mode" : 4,
              "indices" : "accessor_7"
@@ -279,15 +279,5 @@
             "node_0", "node_1", "node_2", "node_3", "node_4", "node_5", "node_6", "node_7"
          ]
       }
-   },
-   "textures" : [
-      {
-         "sampler" : 0,
-         "source" : 0
-      },
-      {
-         "sampler" : 0,
-         "source" : 1
-      }
-   ]
+   }
 }

test/models/glTF2/IncorrectVertexArrays/Cube.gltf

@@ -204,7 +204,7 @@
           "name" : "TruncatedIndexedCube",
           "primitives" : [ {
              "attributes" : {
-                "POSITION" : 1
+                "POSITION" : 6
              },
              "mode" : 4,
              "indices" : 7
@@ -282,15 +282,5 @@
             0, 1, 2, 3, 4, 5, 6, 7
          ]
       }
-   ],
-   "textures" : [
-      {
-         "sampler" : 0,
-         "source" : 0
-      },
-      {
-         "sampler" : 0,
-         "source" : 1
-      }
    ]
 }

test/unit/utglTF2ImportExport.cpp

@@ -382,6 +382,29 @@ TEST_F(utglTF2ImportExport, import_cameras) {
     EXPECT_NE(nullptr, scene);
 }
 
+TEST_F(utglTF2ImportExport, incorrect_vertex_arrays) {
+    Assimp::Importer importer;
+    const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/IncorrectVertexArrays/Cube.gltf",
+        aiProcess_ValidateDataStructure);
+    EXPECT_NE(nullptr, scene);
+    EXPECT_EQ(scene->mMeshes[0]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[0]->mNumFaces, 12u);
+    EXPECT_EQ(scene->mMeshes[1]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[1]->mNumFaces, 11u);
+    EXPECT_EQ(scene->mMeshes[2]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[2]->mNumFaces, 18u);
+    EXPECT_EQ(scene->mMeshes[3]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[3]->mNumFaces, 17u);
+    EXPECT_EQ(scene->mMeshes[4]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[4]->mNumFaces, 12u);
+    EXPECT_EQ(scene->mMeshes[5]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[5]->mNumFaces, 11u);
+    EXPECT_EQ(scene->mMeshes[6]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[6]->mNumFaces, 18u);
+    EXPECT_EQ(scene->mMeshes[7]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[7]->mNumFaces, 17u);
+}
+
 #ifndef ASSIMP_BUILD_NO_EXPORT
 TEST_F( utglTF2ImportExport, exportglTF2FromFileTest ) {
     EXPECT_TRUE( exporterTest() );

test/unit/utglTFImportExport.cpp

@@ -46,6 +46,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/Importer.hpp>
 #include <assimp/postprocess.h>
 
+#include <assimp/scene.h>
+
 using namespace Assimp;
 
 class utglTFImportExport : public AbstractImportExportBase {
@@ -60,3 +62,26 @@ public:
 TEST_F( utglTFImportExport, importglTFFromFileTest ) {
     EXPECT_TRUE( importerTest() );
 }
+
+TEST_F(utglTFImportExport, incorrect_vertex_arrays) {
+    Assimp::Importer importer;
+    const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF/IncorrectVertexArrays/Cube_v1.gltf",
+        aiProcess_ValidateDataStructure);
+    EXPECT_NE(nullptr, scene);
+    EXPECT_EQ(scene->mMeshes[0]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[0]->mNumFaces, 12u);
+    EXPECT_EQ(scene->mMeshes[1]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[1]->mNumFaces, 11u);
+    EXPECT_EQ(scene->mMeshes[2]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[2]->mNumFaces, 18u);
+    EXPECT_EQ(scene->mMeshes[3]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[3]->mNumFaces, 17u);
+    EXPECT_EQ(scene->mMeshes[4]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[4]->mNumFaces, 12u);
+    EXPECT_EQ(scene->mMeshes[5]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[5]->mNumFaces, 11u);
+    EXPECT_EQ(scene->mMeshes[6]->mNumVertices, 36u);
+    EXPECT_EQ(scene->mMeshes[6]->mNumFaces, 18u);
+    EXPECT_EQ(scene->mMeshes[7]->mNumVertices, 35u);
+    EXPECT_EQ(scene->mMeshes[7]->mNumFaces, 17u);
+}