Add a unit test to check that passing normals works fine

test/lib/mayaUsd/render/mayaToHydra/CMakeLists.txt

@@ -34,6 +34,7 @@ set(INTERACTIVE_TEST_SCRIPT_FILES
     testFootPrintNode.py
     testBackgroundColor.py
     testGrid.py
+    testPassingNormalsOnMayaNative.py
     cpp/testColorPreferences.py
     cpp/testCppFramework.py
     cpp/testMayaSceneFlattening.py

test/lib/mayaUsd/render/mayaToHydra/testPassingNormalsOnMayaNative.py

@@ -0,0 +1,39 @@
+#
+# Copyright 2023 Autodesk, Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from math import*
+import maya.cmds as cmds
+import fixturesUtils
+import mtohUtils
+import mayaUtils
+
+class TestPassingNormalsOnMayaNative(mtohUtils.MayaHydraBaseTestCase): #Subclassing mtohUtils.MayaHydraBaseTestCase to be able to call self.assertSnapshotClose
+    # MayaHydraBaseTestCase.setUpClass requirement.
+    _file = __file__
+
+    IMAGE_DIFF_FAIL_THRESHOLD = 0.01
+    IMAGE_DIFF_FAIL_PERCENT = 0.1
+
+    #Test loading a scene
+    def test_Load(self):
+        testFile = mayaUtils.openTestScene( 
+            "testPassingNormals",
+            "test_ImportedAssetsNormals.ma")
+        cmds.refresh()
+        self.assertSnapshotClose("importedAssetsNormals.png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+if __name__ == '__main__':
+    fixturesUtils.runTests(globals())