def test_stop_browsing(self):
history = History([0, 1])
history.prev() # 0
history.prev() # 1
history.stop_browsing()
self.assertEqual(history.current_item(), 0)
self.assertFalse(history.browsing())
def test_prev_success(self):
history = History([0, 1])
self.assertTrue(history.prev())
self.assertEqual(history.current_item(), 0)
self.assertTrue(history.browsing())
self.assertTrue(history.prev())
self.assertEqual(history.current_item(), 1)
self.assertTrue(history.browsing())
def test_next_success(self):
history = History([0, 1])
self.assertTrue(history.prev()) # 0
self.assertTrue(history.prev()) # 1
self.assertTrue(history.next()) # 0
self.assertEqual(history.current_item(), 0)
self.assertTrue(history.browsing())
def test_integration(self):
history = History([0])
self.assertTrue(history.prev()) # 0
self.assertTrue(history.browsing())
self.assertTrue(history.remove(0))
self.assertFalse(history.browsing())
self.assertEqual(history.size(), 0)
history.push(1)
history.push(2)
self.assertTrue(history.prev()) # 2
self.assertTrue(history.prev()) # 1
self.assertTrue(history.browsing())
self.assertEqual(history.current_item(), 1)
self.assertTrue(history.remove(2))
self.assertEqual(history.current_item(), 1)
self.assertFalse(history.next())
self.assertFalse(history.browsing())
def test_next_failure(self):
history = History([0])
self.assertFalse(history.next())
self.assertEqual(history.current_item(), 0)
self.assertFalse(history.browsing())
def test_push(self):
history = History()
history.push(0)
self.assertEqual(history.current_item(), 0)
self.assertFalse(history.browsing())
def test_prev_failure(self):
history = History()
self.assertFalse(history.prev())
self.assertFalse(history.browsing())
def test_can_prev_failure(self):
history = History()
self.assertFalse(history.can_prev())
def test_can_prev_success(self):
history = History([0])
self.assertTrue(history.can_prev())
def test_remove_inexistant(self):
history = History([0])
self.assertFalse(history.remove(1))
self.assertEqual(history.size(), 1)
def test_remove(self):
history = History([0])
self.assertTrue(history.remove(0))
self.assertEqual(history.size(), 0)
def test_push_duplicate(self):
history = History([0, 1])
history.push(1)
self.assertEqual(history.current_item(), 0)