class TestStack(unittest.TestCase):
def setUp(self) -> None:
self.st = Stack()
def test_is_empty(self):
self.assertTrue(self.st.is_empty(), "The stack is not empty")
self.assertRaises(IndexError, self.st.pop)
def test_repr(self):
self.assertEqual("Stack()", repr(self.st), "The repr method does not work properly")
def test_push_one_item(self):
self.st.push(2)
self.assertFalse(self.st.is_empty())
self.assertEqual("Stack(2)", str(self.st))
def test_push_multiple_items(self):
self.st.push(3)
self.st.push(10)
self.assertEqual("Stack(3, 10)", str(self.st))
popped_item = self.st.pop()
self.assertEqual(10, popped_item)
def test_is_full(self):
for i in range(10):
self.st.push(i)
self.assertTrue(self.st.is_full())
self.assertRaises(OverflowError, self.st.push, 12)
def test_pop_one_item(self):
self.st.push(3)
popped_item = self.st.pop()
self.assertEqual(3, popped_item)
def test_pop_multiple_items(self):
self.st.push(3)
self.st.push(10)
popped_item = self.st.pop()
self.assertEqual(10, popped_item)
popped_item = self.st.pop()
self.assertEqual(3, popped_item)
def test_type(self):
self.assertRaises(TypeError, self.st.push, "3")
self.assertRaises(TypeError, self.st.push, 3.1)
self.assertRaises(TypeError, self.st.push, True)
def test_top_non_empty_stack(self):
self.st.push(3)
self.st.push(10)
self.assertEqual(10, self.st.top())
def test_top_empty_stack(self):
self.assertRaises(IndexError, self.st.top)
