Added unit test.

Author: ppt-adsk

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

@@ -60,6 +60,7 @@ set(INTERACTIVE_TEST_SCRIPT_FILES
     testSceneModified.py
     testStageInstanceablePrimsSelHighlight.py|skipOnPlatform:osx # HYDRA-1315 : Wire not showing on OSX
     testIsolateSelectWithGeomSubset.py
+    testIsolateSelectWithUsdLighting.py
     cpp/testColorPreferences.py
     cpp/testCppFramework.py
     cpp/testDataProducerExample.py

test/lib/mayaUsd/render/mayaToHydra/IsolateSelectWithUsdLightingTest/isolateSelectWithUsdLighting.png

@@ -0,0 +1,65 @@
+# 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 maya.mel as mel
+import fixturesUtils
+import mayaUtils
+import mtohUtils
+
+def enableIsolateSelect(modelPanel):
+    # See comments in cpp/testIsolateSelect.py
+    cmds.setFocus(modelPanel)
+    mel.eval("enableIsolateSelect %s 1" % modelPanel)
+    
+def disableIsolateSelect(modelPanel):
+    cmds.setFocus(modelPanel)
+    mel.eval("enableIsolateSelect %s 0" % modelPanel)
+
+class TestIsolateSelectWithUsdLighting(mtohUtils.MayaHydraBaseTestCase):
+    # MayaHydraBaseTestCase.setUpClass requirement.
+    _file = __file__
+
+    IMAGE_DIFF_FAIL_THRESHOLD = 0.01
+    IMAGE_DIFF_FAIL_PERCENT = 0.2
+
+    def test_IsolateSelectWithUsdLighting(self):
+        mayaUtils.openTestScene( 
+                "testIsolateSelectWithUsdLighting",
+                "mayaPlusUSDMeshesWithUSDLighting.ma")
+
+        # Bring the camera in closer.
+        self.setBasicCam(5)
+
+        cmds.refresh()
+
+        # Isolate select the USD sphere.
+        modelPanel = 'modelPanel4'
+        enableIsolateSelect(modelPanel)
+
+        cmds.select('|stage1|stageShape1,/pSphere1')
+        cmds.editor(modelPanel, edit=True, updateMainConnection=True)
+        cmds.isolateSelect(modelPanel, loadSelected=True)
+
+        cmds.refresh()
+
+        self.assertSnapshotClose("isolateSelectWithUsdLighting" + ".png", self.IMAGE_DIFF_FAIL_THRESHOLD, self.IMAGE_DIFF_FAIL_PERCENT)
+
+        # Disable the isolate selection.
+        disableIsolateSelect(modelPanel)
+
+        cmds.refresh()
+
+if __name__ == '__main__':
+    fixturesUtils.runTests(globals())