def test_same_key(self):
d = Container(5)
for i in xrange(10):
d['foo'] = i
assert list(d.keys()) == ['foo']
assert len(d) == 1
def test_delete(self):
d = Container(5)
for i in xrange(5):
d[i] = True
del d[0]
assert 0 not in d
d.pop(1)
assert 1 not in d
d.pop(1, None)
def test_access_ordering(self):
d = Container(5)
for i in xrange(10):
d[i] = True
# Keys should be ordered by access time
assert list(d.keys()) == [5, 6, 7, 8, 9]
new_order = [7, 8, 6, 9, 5]
for k in new_order:
d[k]
assert list(d.keys()) == new_order
def test_expire(self):
d = Container(5)
for i in xrange(5):
d[i] = str(i)
for i in xrange(5):
d.get(0)
# Add one more entry
d[5] = '5'
# Check state
assert list(d.keys()) == [2, 3, 4, 0, 5]
def test_maxsize(self):
d = Container(5)
for i in xrange(5):
d[i] = str(i)
assert len(d) == 5
for i in xrange(5):
assert d[i] == str(i)
d[i + 1] = str(i + 1)
assert len(d) == 5
assert 0 not in d
assert (i + 1) in d
def test_get(self):
d = Container(5)
for i in xrange(5):
d[i] = True
r = d.get(4)
assert r is True
r = d.get(5)
assert r is None
r = d.get(5, 42)
assert r == 42
with pytest.raises(KeyError):
d[5]
def test_disposal(self):
evicted_items = []
def dispose_func(arg):
# Save the evicted datum for inspection
evicted_items.append(arg)
d = Container(5, dispose_func=dispose_func)
for i in xrange(5):
d[i] = i
assert list(d.keys()) == list(xrange(5))
assert evicted_items == [] # Nothing disposed
d[5] = 5
assert list(d.keys()) == list(xrange(1, 6))
assert evicted_items == [0]
del d[1]
assert evicted_items == [0, 1]
d.clear()
assert evicted_items == [0, 1, 2, 3, 4, 5]
def test_iter(self):
d = Container()
with pytest.raises(NotImplementedError):
d.__iter__()