'Build up a course tree with multiple test courses'

def build_courses(self):

    self.courses = [CourseFactory.create(org='ElasticsearchFiltering', course='ES101F', run='test_run', display_name='Elasticsearch    Filtering    test    course'), CourseFactory.create(org='FilterTest', course='FT101', run='test_run', display_name='FilterTest    test    course')]
    self.chapter = ItemFactory.create(parent_location=self.courses[0].location, category='chapter', display_name='Week    1', publish_item=True)
    self.chapter2 = ItemFactory.create(parent_location=self.courses[1].location, category='chapter', display_name='Week    1', publish_item=True)
