Added Unittest to check OBJ Reader Writer Issue refs

src/Unittests/unittests_read_write_OBJ.cc

@@ -499,4 +499,87 @@ TEST_F(OpenMeshReadWriteOBJ, ReadWriteReadSimpleOBJ) {
   EXPECT_EQ(1, mesh2.normal(mesh2.vertex_handle(7))[2] ) << "Wrong vertex normal at vertex 7 component 2";
 
 }
+
+
+TEST_F(OpenMeshReadWriteOBJ, FaceTexCoordTest) {
+
+  mesh_.clear();
+  mesh_.request_vertex_normals();
+  mesh_.request_halfedge_texcoords2D();
+
+  // Add some vertices
+  Mesh::VertexHandle vhandle[5];
+
+  vhandle[0] = mesh_.add_vertex(Mesh::Point(0, 0, 0));
+  vhandle[1] = mesh_.add_vertex(Mesh::Point(0, 1, 0));
+  vhandle[2] = mesh_.add_vertex(Mesh::Point(1, 1, 0));
+
+  // Add one face
+  std::vector<Mesh::VertexHandle> face_vhandles;
+
+  face_vhandles.push_back(vhandle[2]);
+  face_vhandles.push_back(vhandle[1]);
+  face_vhandles.push_back(vhandle[0]);
+
+  Mesh::FaceHandle fh = mesh_.add_face(face_vhandles);
+
+  //  1 --- 2
+  //  |   /
+  //  |  /
+  //  | /
+  //  0
+
+  mesh_.set_normal(vhandle[0] , Mesh::Normal(1,0,0));
+  mesh_.set_normal(vhandle[1] , Mesh::Normal(0,1,0));
+  mesh_.set_normal(vhandle[2] , Mesh::Normal(0,0,1));
+
+
+  float u = 8.0f;
+  for ( auto he : mesh_.halfedges() ) {
+
+    mesh_.set_texcoord2D(he,Mesh::TexCoord2D(u,u));
+    u += 1.0;
+  }
+
+  u = 0.0f;
+
+  for ( auto fh : mesh_.fh_range(fh) )
+  {
+
+    mesh_.set_texcoord2D(fh,Mesh::TexCoord2D(u,u));
+    u += 1.0f;
+  }
+
+
+
+  OpenMesh::IO::Options wopt;
+  wopt += OpenMesh::IO::Options::VertexNormal;
+  wopt += OpenMesh::IO::Options::FaceTexCoord;
+
+  bool ok = OpenMesh::IO::write_mesh(mesh_, "OpenMeshReadWriteOBJ_FaceTexCoordTest.obj", wopt);
+
+  EXPECT_TRUE(ok) << "Unable to write OpenMeshReadWriteOBJ_FaceTexCoordTest.obj";
+
+  mesh_.clear();
+
+
+  OpenMesh::IO::Options ropt;
+
+  ropt += OpenMesh::IO::Options::FaceTexCoord;
+
+  mesh_.request_vertex_normals();
+  mesh_.request_face_normals();
+  mesh_.request_halfedge_texcoords2D();
+
+  ok = OpenMesh::IO::read_mesh(mesh_, "OpenMeshReadWriteOBJ_FaceTexCoordTest.obj", ropt);
+
+  EXPECT_TRUE(ok) << "Unable to read back OpenMeshReadWriteOBJ_FaceTexCoordTest.obj";
+
+}
+
+
+
+
+
+
 }