def test_same_unchanged():
cd = CowDict(base_dict)
for key in keys:
assert cd[key] == base_dict[key]
assert set(base_dict_items) == set(cd.items())
assert base_dict_items == tuple(base_dict.items())
def test_new_keys_deleted():
cd = CowDict(base_dict)
cd["foo6"] = "bar6"
cd["foo7"] = "bar7"
del cd["foo6"]
del cd["foo7"]
for key in keys:
assert cd[key] == base_dict[key]
assert set(base_dict_items) == set(cd.items())
assert base_dict_items == tuple(base_dict.items())
def test_same_changed(base_dict):
cd = CowDict(base_dict)
base_dict["foo2"] = "baz2"
base_dict["foo5"] = "baz5"
for key in keys:
if key in ("foo2", "foo5"):
assert cd[key] == key.replace("foo", "baz")
else:
assert cd[key] == base_dict[key]
assert set(cd.items()) == {
('foo1', 'bar1'),
('foo2', 'baz2'),
('foo3', 'bar3'),
('foo4', 'bar4'),
('foo5', 'baz5'),
}
def test_multiple_operations():
cd = CowDict(base_dict)
del cd["foo1"]
del cd["foo3"]
cd["new_key1"] = "new_value1"
cd["new_key2"] = "new_value2"
cd["foo4"] = "changed_value"
with pytest.raises(KeyError):
del cd["non_existing_key"]
assert set(cd.keys()) == {"foo2", "foo4", "foo5", "new_key1", "new_key2"}
assert set(cd.items()) == {
("foo2", "bar2"),
("foo4", "changed_value"),
("foo5", "bar5"),
("new_key1", "new_value1"),
("new_key2", "new_value2"),
}
def test_base_keys_deleted(base_dict):
cd = CowDict(base_dict)
del base_dict["foo1"]
del base_dict["foo5"]
assert cd["foo2"] == "bar2"
assert cd["foo3"] == "bar3"
assert cd["foo4"] == "bar4"
assert set(cd.items()) == {
('foo2', 'bar2'),
('foo3', 'bar3'),
('foo4', 'bar4'),
}
with pytest.raises(KeyError):
cd["foo1"]
with pytest.raises(KeyError):
cd["foo5"]
def test_new_keys_added(base_dict):
cd = CowDict(base_dict)
base_dict["foo6"] = "bar6"
base_dict["foo7"] = "bar7"
for key in keys:
assert cd[key] == base_dict[key]
assert cd["foo6"] == "bar6"
assert cd["foo7"] == "bar7"
assert set(cd.items()) == {
('foo1', 'bar1'),
('foo2', 'bar2'),
('foo3', 'bar3'),
('foo4', 'bar4'),
('foo5', 'bar5'),
('foo6', 'bar6'),
('foo7', 'bar7'),
}