def test_top_stack_empty():
with pytest.raises(Exception):
stack = Stack()
expected = Exception("The stack is empty.")
actual = stack.top()
assert actual == expected, 'Error on test_top_stack_empty.'
def test_is_empty_true():
stack = Stack()
expected = True
actual = stack.is_empty()
assert actual == expected, 'Error on test_is_empty_true.'
def test_top_stack_not_empty():
stack = Stack()
value = 50
stack.push(value)
expected = value
actual = stack.top()
assert actual == expected, 'Error on test_top_stack_not_empty.'
def test_push_stack():
stack = Stack()
value = 50
stack.push(value)
expected = value
actual = stack.min_top()
assert actual == expected, 'Error on test_push_stack.'
def test_is_empty_false():
stack = Stack()
value = 50
stack.push(value)
expected = False
actual = stack.is_empty()
assert actual == expected, 'Error on test_is_empty_false.'
def test_min_stack():
stack = Stack()
stack.push(50)
stack.push(100)
stack.push(10)
stack.push(30)
expected = 10
actual = stack.min()
assert actual == expected, 'Error on test_min_stack.'
def test_top_stack():
stack = Stack()
value = 50
stack.push(value)
value = 100
stack.push(value)
value = 200
stack.push(value)
expected = value
actual = stack.top()
assert actual == expected, 'Error on test_top_stack.'
def test_min_stack_large():
stack = Stack()
stack.push(50)
stack.push(100)
stack.push(1000)
stack.push(30)
stack.push(150)
stack.push(250)
stack.push(5)
stack.push(500)
stack.pop()
stack.pop()
stack.pop()
stack.pop()
stack.pop()
expected = 50
actual = stack.min()
assert actual == expected, 'Error on test_min_stack_large.'