def test_clear(self):
q = Queue()
q.push(1)
q.push(2)
q.push(3)
q.clear()
self.assertEqual(q.size(), 0)
def test_pop(sef):
q = Queue()
q.push(1)
q.push(2)
self.assertEqual(q.pop(), 1)
self.assertEqual(q.pop(), 2)
self.assertEqual(q.pop(), None)
def test_type_checking(self):
q = Queue()
q.push('a')
self.assertRaises(TypeError, q.push(1))
def test_push(self):
q = Queue()
self.assertEqual(q.size(), 0)
q.push(1)
q.push(2)
self.assertEqual(q.size(), 2)
def test_size(self):
q = Queue()
self.assertEqual(q.size(), 0)
def test_constructor(self):
try:
q = Queue()
print('TEST CONSTRUCTOR: PASS')
except:
print('TEST CONSTRUCTOR: FAIL')