class TestSpec(unittest.TestCase):
def setUp(self):
self.c = Course()
def test_getLessons_returns_empty_default(self):
lessons = self.c.getLessons()
self.assertListEqual(lessons, [])
def test_addLesson_requires_Lesson_instance(self):
lesson = Lesson()
self.c.addLesson(lesson)
self.assertEquals([lesson], self.c.getLessons())
with self.assertRaises(ValueError):
self.c.addLesson('not an instance')
