def addVisibilitySuite():
    if Configuration.DEBUG == True: print("TestRunner.py - addVisibilitySuite")
    from visibility_tests import AllVisibilityTestSuite
    suite = unittest.TestSuite()
    suite.addTests(AllVisibilityTestSuite.getVisibilityTestSuites())
    return suite
Add all Visibility tests in the ./visibility_tests folder
dataset/ETHPy150Open Esri/solutions-geoprocessing-toolbox/utils/test/TestRunner.py/addVisibilitySuite