def test_is_empty(self):
cb = CircularBuffer(2)
assert cb.is_empty()
cb.enqueue('test')
assert not cb.is_empty()
cb.dequeue()
assert cb.is_empty()
def test_is_empty(self):
c = CircularBuffer(3)
assert c.is_empty() is True
c.enqueue('A')
assert c.is_empty() is False
c.dequeue()
assert c.is_empty() is True
def test_init(self):
c = CircularBuffer(3)
assert c.max_size == 3
assert c.size == 0
assert c.start == 0
assert c.end == 0
assert c.is_empty() is True
assert c.is_full() is False
def test_dequeue(self):
cb = CircularBuffer(['A', 'B', 'C'])
assert cb.dequeue() == 'A'
assert cb.size == 2
assert cb.dequeue() == 'B'
assert cb.size == 1
assert cb.dequeue() == 'C'
assert cb.size == 0
assert cb.is_empty() is True
with self.assertRaises(ValueError):
cb.dequeue()
def test_dequeue(self):
q = CircularBuffer(['A', 'B', 'C'])
assert q.dequeue() == 'A'
assert q.length() == 2
assert q.dequeue() == 'B'
assert q.length() == 1
assert q.dequeue() == 'C'
assert q.length() == 0
assert q.is_empty() is True
with self.assertRaises(ValueError):
q.dequeue()
def test_enqueue(self):
cb = CircularBuffer()
cb.enqueue('A')
assert cb.peek() == 'A'
assert cb.size == 1
cb.enqueue('B')
assert cb.peek() == 'A'
assert cb.size == 2
cb.enqueue('C')
assert cb.peek() == 'A'
assert cb.size == 3
assert cb.is_empty() is False
def test_enqueue(self):
q = CircularBuffer()
q.enqueue('A')
assert q.front() == 'A'
assert q.length() == 1
q.enqueue('B')
assert q.front() == 'A'
assert q.length() == 2
q.enqueue('C')
assert q.front() == 'A'
assert q.length() == 3
assert q.is_empty() is False
def test_enqueue(self):
cb = CircularBuffer(5)
cb.enqueue('A')
assert cb.front() == 'A'
assert cb.length() == 1
cb.enqueue('B')
assert cb.front() == 'A'
assert cb.length() == 2
cb.enqueue('C')
assert cb.front() == 'A'
assert cb.length() == 3
assert cb.is_empty() is False
def test_enqueue(self):
cb = CircularBuffer(4)
cb.enqueue(3)
assert cb.size == 1
assert len(cb) == 4
assert cb.is_empty() == False
cb.enqueue(1)
assert cb.size == 2
cb.enqueue(4)
assert cb.size == 3
cb.enqueue(1)
assert cb.size == 4
assert cb.is_full() == True
cb.enqueue(5)
assert cb.size == 4
def test_init(self):
cb = CircularBuffer()
assert cb.head is None
assert cb.length == 10
assert cb.is_empty() is True
def test_init(self):
q = CircularBuffer()
assert q.front() is None
assert q.length() == 0
assert q.is_empty() is True
def test_init_with_list(self):
q = CircularBuffer(['A', 'B', 'C'])
assert q.front() == 'A'
assert q.length() == 3
assert q.is_empty() is False
def test_init(self):
cb = CircularBuffer(8)
assert cb.size == 0
assert len(cb) == 8
assert cb.is_empty() == True
def test_init(self):
cb = CircularBuffer(5)
assert cb.front() is None
assert cb.length() == 0
assert cb.is_empty() is True