Test create_material feature

Author: einarf

test/simple_missing_material.obj

@@ -0,0 +1,26 @@
+# Comment
+mtllib simple_missing.mtl
+o Simple
+v 0.01 0.02 0.03
+v 0.04 0.05 0.06
+v 0.07 0.08 0.09
+v 0.11 0.12 0.13
+vt 10 11
+vt 12 13
+vt 14 15
+vt 16 17
+vn 20 21 22
+usemtl Material.simple
+f 2/3/1 1/2/1 3/1/1
+o SimpleB
+v 1.0 0.0 1.0
+v -1.0 0.0 1.0
+v 1.0 0.0 -1.0
+v -1.0 0.0 -1.0
+vt 0.0 1.0
+vt 0.0 0.0
+vt 1.0 0.0
+vt 1.0 1.0
+vn 0.0 1.0 -0.0
+usemtl Material2.simple
+f 6/7/2 5/6/2 7/5/2

test/test_parser.py

@@ -54,6 +54,19 @@ def setUp(self):
         self.mesh2 = meshes.mesh_list[1]
 
 
+class TestParserMissingMaterials(unittest.TestCase):
+    """Test `create_materials` functionality"""
+
+    def test_missing_material_error(self):
+        """Parser should crash if `create_materials` is not set"""
+        with self.assertRaises(IOError):
+            pywavefront.Wavefront(prepend_dir('simple_missing_material.obj'))
+
+    def test_missing_material_create(self):
+        """Parser should handle missing materials if `create_materials` is set"""
+        pywavefront.Wavefront(prepend_dir('simple_missing_material.obj'), create_materials=True)
+
+
 class TestParserVertexVariants(unittest.TestCase):
 
     def testObjNoNormals(self):