def test_ancestor_delitem(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd, **{"the_other_key": True})
del cd["the_key"]
assert "the_key" not in cd2
def test_iter_with_ancestor_with_deletion(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd, **{"the_other_key": True})
del cd2["the_key"]
set(key for key in cd2) == set(["the_other_key"])
def test_contains_ancestral(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd, **{"the_other_key": True})
assert "the_key" in cd2
assert "the_other_key" in cd2
assert "the_other_key" not in cd
def test_delitem_with_ancestor(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd)
del cd2["the_key"]
assert "the_key" not in cd2
assert "the_key" in cd
def test_setitem_direct_not_affect_ancestral(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd)
cd2["the_key"] = False
assert cd2["the_key"] == False
assert cd["the_key"] == True
def test_iter_with_ancestor(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd, **{"the_other_key": True})
assert set(key for key in cd2) == set(["the_key", "the_other_key"])
assert set(key for key in cd) == set(["the_key"])
def test_iter(self):
cd = ChainedDict(**{"the_key": True})
set(key for key in cd) == set(["the_key"])
def test_bare_initialization(self):
ChainedDict()
def test_len_with_ancestor(self):
cd = ChainedDict(**{"the_key": True})
cd2 = ChainedDict(parent=cd, **{"the_other_key": True})
assert len(cd2) == 2
def test_len(self):
cd = ChainedDict(**{"the_key": True})
assert len(cd) == 1
def test_delitem_invalid_key(self):
cd = ChainedDict()
with pytest.raises(KeyError):
del cd["anything"]
def test_delitem(self):
cd = ChainedDict({"the_key": True})
del cd["the_key"]
assert "the_key" not in cd
def test_contains_direct(self):
cd = ChainedDict()
cd["the_key"] = True
assert "the_key" in cd
assert "not_the_key" not in cd