def test_exact_get():
m = Map()
a = MapKey('a')
b = MapKey('b', parents=[a])
m[a] = u"Value for A"
assert m.exact_get(b) is None
assert m.exact_get(b, u'default') == u'default'
assert m.exact_get(a) == u'Value for A'
def test_exact_getitem():
m = Map()
a = MapKey('a')
b = MapKey('b', parents=[a])
m[a] = u"Value for A"
with py.test.raises(KeyError):
m.exact_getitem(b)
assert m.exact_getitem(a) == u'Value for A'
def test_map_all():
m = Map()
a = MapKey('a')
b = MapKey('b', parents=[a])
c = MapKey('c', parents=[a])
d = MapKey('d', parents=[b, c])
m[b] = u'Value for B'
m[c] = u'Value for C'
m[d] = u'Value for D'
assert m.all(d) == [u'Value for D', u'Value for B', u'Value for C']