HYDRA-538 - Create unit test to verify UVs/UDIMs are rendered accordi…

…ngly with Maya data (#111)

* UVs and UDIMs autotest

* Adjust IMAGEDIFF_FAIL_PERCENT to make sure the autotest passes on OSX

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

@@ -21,6 +21,7 @@ set(INTERACTIVE_TEST_SCRIPT_FILES
     testMayaIsolateSelect.py
     testMayaLights.py
     testUSDLights.py
+    testUVandUDIM.py
     testArnoldLights.py
     testLookThrough.py
     testObjectTemplate.py

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

@@ -0,0 +1,43 @@
+# Copyright 2024 Autodesk
+#
+# 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.
+#
+import maya.cmds as cmds
+import mayaUtils
+import fixturesUtils
+import mtohUtils
+
+class TestUVandUDIM(mtohUtils.MayaHydraBaseTestCase):
+    _file = __file__
+
+    IMAGEDIFF_FAIL_THRESHOLD = 0.01
+    IMAGEDIFF_FAIL_PERCENT = 0.2
+
+    def verifySnapshot(self, imageName):
+        cmds.refresh()
+        self.assertSnapshotClose(imageName, 
+                                 self.IMAGEDIFF_FAIL_THRESHOLD,
+                                 self.IMAGEDIFF_FAIL_PERCENT)
+
+    def test_UVs(self):
+        mayaUtils.openTestScene("testUVandUDIM", "testUVs.ma")
+        self.setHdStormRenderer()
+        self.verifySnapshot("quads_with_UVs.png")
+
+    def test_UDIMs(self):
+        mayaUtils.openTestScene("testUVandUDIM", "testUDIMs.ma")
+        self.setHdStormRenderer()
+        self.verifySnapshot("quads_with_UDIMs.png")
+
+if __name__ == '__main__':
+    fixturesUtils.runTests(globals())