def test_len_returns_positive_ints(self):
queue = impl.Queue()
try:
# assert (type(queue.len())==int) and (queue.len()>=0)
assert isinstance(queue.len(), int) and (queue.len() >= 0)
except:
assert False
def test_dequeue_when_queue_not_empty(self, param):
queue = impl.Queue()
for element in param:
queue.enqueue(element)
result = queue.dequeue()
# print (result)
assert result is not None
def test_enqueue_single_operation(self, a):
queue = impl.Queue()
for elem in a:
# print (elem)
expected_length = queue.len() + 1
queue.enqueue(elem)
assert queue.len() == expected_length
def test_enqueue_multiple(self, a):
queue = impl.Queue()
for x in a:
# print (x)
queue.enqueue(x)
for x in a:
queue.dequeue()
assert queue.dequeue() == None
assert queue.len() == 0
def test_value_error(self, param):
queue = impl.Queue()
try:
# print(param)
queue.enqueue(param)
except ValueError:
pass
except:
assert False
def test_dequeue_val(self, param):
queue = impl.Queue()
try:
for element in param:
queue.enqueue(param)
result = queue.dequeue()
# print (result[0],'==',param[0])
assert result[0] == param[0]
except:
assert False
def test_dequeue_not_return_inf_nan(self, param):
queue = impl.Queue()
try:
queue.enqueue(param)
except ValueError:
try:
assert queue.dequeue() == None
except:
assert False
except:
assert False, "Sorry!"
def test_correct_enqueue(self, param):
queue = impl.Queue()
try:
for element in param:
queue.enqueue(element)
for element in param:
result = queue.dequeue()
assert result == element
for element in param:
queue.enqueue(element)
queue.enqueue('random_string')
assert queue.len() == 2
for element in param:
m = queue.dequeue()
assert m == element
new_result = queue.dequeue()
print(new_result)
assert queue.len() == 0
except:
assert False
def test_len_when_initalize(self):
queue = impl.Queue()
try:
assert queue.len() == 0
except:
assert False
def test_len_when_not_empty(self, param):
queue = impl.Queue()
for elem in param:
queue.enqueue(elem)
# print (param)
assert queue.len() == len(param)
def test_dequeue_when_queue_empty(self):
q = impl.Queue()
result = q.dequeue()
assert result is None
