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import pytest
from immutabledict import ImmutableOrderedDict, immutabledict
class TestImmutableDict:
def test_cannot_assign_value(self):
with pytest.raises(AttributeError):
immutabledict().setitem("key", "value")
def test_from_keys(self):
keys = ("a", "b", "c")
immutable_dict = immutabledict.fromkeys(keys)
assert "a" in immutable_dict
assert "b" in immutable_dict
assert "c" in immutable_dict
def test_init_and_compare(self):
normal_dict = {"a": "value", "b": "other_value"}
immutable_dict = immutabledict(normal_dict)
assert immutable_dict == normal_dict
def test_get_existing(self):
immutable_dict = immutabledict({"a": "value"})
assert immutable_dict["a"] == "value"
def test_get_not_existing(self):
immutable_dict = immutabledict({"a": "value"})
with pytest.raises(KeyError):
immutable_dict["b"]
def test_contains(self):
immutable_dict = immutabledict({"a": "value"})
assert "a" in immutable_dict
def test_contains_not_existing(self):
immutable_dict = immutabledict({"a": "value"})
assert "b" not in immutable_dict
def test_copy(self):
original = immutabledict({"a": "value"})
copy = original.copy()
assert original == copy
def test_iter(self):
immutable_dict = immutabledict({"a": "value", "b": "other_value"})
itered_keys = {x for x in immutable_dict}
assert immutable_dict.keys() == itered_keys
def test_len(self):
immutable_dict = immutabledict({"a": "value", "b": "other_value"})
assert len(immutable_dict) == 2
def test_len_empty(self):
immutable_dict = immutabledict({})
assert len(immutable_dict) == 0
def test_repr(self):
immutable_dict = immutabledict({"a": "value", "b": "other_value"})
repr_ret = repr(immutable_dict)
assert repr_ret.startswith("immutabledict")
assert repr_ret.endswith(")")
def test_repr_should_eval(self):
immutable_dict = immutabledict({"a": "value", "b": "other_value"})
eval_ret = eval(repr(immutable_dict))
assert immutable_dict == eval_ret
def test_hash(self):
first_dict = immutabledict({"a": "value", "b": "other_value"})
second_dict = immutabledict({"a": "value", "b": "other_value"})
assert hash(first_dict) == hash(second_dict)
def test_union_operator_merge(self):
first_dict = immutabledict({"a": "a", "b": "b"})
second_dict = immutabledict({"a": "A", "c": "c"})
merged_dict = first_dict | second_dict
assert isinstance(merged_dict, immutabledict)
assert merged_dict == {
"a": "A",
"b": "b",
"c": "c",
}
assert first_dict == {"a": "a", "b": "b"}
assert second_dict == {"a": "A", "c": "c"}
def test_union_operator_merge_with_dict(self):
first_dict = dict({"a": "a", "b": "b"})
second_dict = immutabledict({"a": "A", "c": "c"})
merged_dict = first_dict | second_dict
assert isinstance(merged_dict, dict)
assert merged_dict == {
"a": "A",
"b": "b",
"c": "c",
}
assert first_dict == {"a": "a", "b": "b"}
assert second_dict == {"a": "A", "c": "c"}
first_dict = immutabledict({"a": "a", "b": "b"})
second_dict = dict({"a": "A", "c": "c"})
merged_dict = first_dict | second_dict
assert isinstance(merged_dict, immutabledict)
assert merged_dict == {
"a": "A",
"b": "b",
"c": "c",
}
assert first_dict == {"a": "a", "b": "b"}
assert second_dict == {"a": "A", "c": "c"}
def test_union_operator_merge_fail(self):
first_dict = immutabledict({"a": "a", "b": "b"})
with pytest.raises(TypeError):
first_dict | 0
with pytest.raises(TypeError):
0 | first_dict
def test_union_operator_update(self):
first_dict = immutabledict({"a": "a", "b": "b"})
second_dict = immutabledict({"a": "A", "c": "c"})
with pytest.raises(TypeError):
first_dict |= second_dict
def test_union_operator_update_with_dict(self):
first_dict = dict({"a": "a", "b": "b"})
second_dict = immutabledict({"a": "A", "c": "c"})
first_dict |= second_dict
assert isinstance(first_dict, dict)
assert first_dict == {
"a": "A",
"b": "b",
"c": "c",
}
assert second_dict == {"a": "A", "c": "c"}
first_dict = immutabledict({"a": "a", "b": "b"})
second_dict = dict({"a": "A", "c": "c"})
with pytest.raises(TypeError):
first_dict |= second_dict
assert isinstance(first_dict, immutabledict)
assert first_dict == {"a": "a", "b": "b"}
assert second_dict == {"a": "A", "c": "c"}
class TestImmutableOrderedDict:
def test_ordered(self):
ordered = ImmutableOrderedDict(
{
"a": "1",
"b": "2",
"c": "3",
}
)
itered_keys = [x for x in ordered]
assert itered_keys[0] == "a"
assert itered_keys[1] == "b"
assert itered_keys[2] == "c"
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