'Returns a course hierarchy to test with.'

def get_course_hierarchy(self):

    return [{'org': 'MergedGroupAccess', 'course': 'MGA101F', 'run': 'test_run', 'user_partitions': self.user_partitions, '#type': 'course', '#ref': 'A'}, {'#type': 'vertical', '#ref': 'B', '#parents': ['A'], 'metadata': {'group_access': {1: [1], 2: [3], 3: []}}}, {'#type': 'vertical', '#ref': 'C', '#parents': ['A'], 'metadata': {'group_access': {1: [2], 2: [2], 3: []}}}, {'#type': 'vertical', '#ref': 'D', '#parents': ['A'], 'metadata': {'group_access': {1: [3], 2: [1], 3: []}}}, {'#type': 'vertical', '#ref': 'E', '#parents': ['B', 'C']}]
