class TestBuffer(unittest.TestCase):
def setUp(self):
self.b = Buffer()
def tearDown(self):
del self.b
def testPop(self):
d1 = self.b.pop(2)
d2 = self.b.pop(1)
self.assertFalse(d1.called)
self.assertFalse(d2.called)
self.b.extend(b'1')
self.assertFalse(d1.called)
self.assertFalse(d2.called)
self.b.extend(b'2')
self.assertTrue(d1.called)
self.assertEqual(d1.result, b'12')
self.assertFalse(d2.called)
self.b.extend(b'3')
self.assertTrue(d2.called)
self.assertEqual(d2.result, b'3')
self.b.extend(b'134')
d3 = self.b.pop(2)
self.assertTrue(d3.called)
self.assertEqual(d3.result, b'13')
d4 = self.b.pop(4)
d5 = self.b.pop(1)
self.assertFalse(d4.called)
self.assertFalse(d5.called)
self.b.extend(b'56543')
self.assertTrue(d4.called)
self.assertEqual(d4.result, b'4565')
self.assertTrue(d5.called)
self.assertEqual(d5.result, b'4')
self.assertEqual(len(self.b), 1)
