'Sets up a course structure.'

def populate_course_fixture(self, course_fixture):

    self.unit_page1 = XBlockFixtureDesc('vertical', 'Test    Unit    1').add_children(XBlockFixtureDesc('html', 'HTML    11'), XBlockFixtureDesc('html', 'HTML    12'))
    self.unit_page2 = XBlockFixtureDesc('vertical', 'Test    Unit    2').add_children(XBlockFixtureDesc('html', 'HTML    21'), XBlockFixtureDesc('html', 'HTML    22'))
    course_fixture.add_children(XBlockFixtureDesc('chapter', 'Test    Section').add_children(XBlockFixtureDesc('sequential', 'Test    Subsection').add_children(self.unit_page1, self.unit_page2)))
