'Populate the children of the test course fixture.'

def populate_course_fixture(self, course_fixture):

    self.group_a_problem = 'GROUP    A    CONTENT'
    self.group_b_problem = 'GROUP    B    CONTENT'
    self.group_verified_problem = 'GROUP    VERIFIED    CONTENT'
    self.group_audit_problem = 'GROUP    AUDIT    CONTENT'
    self.group_a_and_b_problem = 'GROUP    A    AND    B    CONTENT'
    self.visible_to_all_problem = 'VISIBLE    TO    ALL    CONTENT'
    course_fixture.add_children(XBlockFixtureDesc('chapter', 'Test    Section').add_children(XBlockFixtureDesc('sequential', 'Test    Subsection').add_children(XBlockFixtureDesc('vertical', 'Test    Unit').add_children(XBlockFixtureDesc('problem', self.group_a_problem, data='<problem></problem>'), XBlockFixtureDesc('problem', self.group_b_problem, data='<problem></problem>'), XBlockFixtureDesc('problem', self.group_verified_problem, data='<problem></problem>'), XBlockFixtureDesc('problem', self.group_audit_problem, data='<problem></problem>'), XBlockFixtureDesc('problem', self.group_a_and_b_problem, data='<problem></problem>'), XBlockFixtureDesc('problem', self.visible_to_all_problem, data='<problem></problem>')))))
