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import pytest
from collections_extended.indexed_dict import IndexedDict
def assert_internal_state(self):
"""Asserts that the inner state of the data structure is consistent.
Returns True, so it can be used in an assert expression itself."""
assert len(self._dict) == len(self._list)
for k, (i, v) in self._dict.items(): # noqa
k2, v2 = self._list[i]
assert k2 == k
assert v2 is v
def test_empty_construction():
d = IndexedDict()
assert list(d) == []
assert_internal_state(d)
def test_dict_construction():
d = IndexedDict({1: 2, 3: 4})
assert set(d) == {1, 3} # Not necessarily ordered for python < 3.6
assert_internal_state(d)
def test_kwargs_construction():
d = IndexedDict(a=1, b=2, c=3)
assert set(d) == set("abc") # Not necessarily ordered for python < 3.6
assert_internal_state(d)
def test_tuples_construction():
d = IndexedDict([(1, 2), (3, 4)])
assert list(d) == [1, 3] # Must have correct order
assert_internal_state(d)
def test_clear():
d = IndexedDict(a=1, b=2, c=3)
d.clear()
assert len(d) == 0
assert list(d) == []
assert_internal_state(d)
@pytest.fixture()
def d(request):
ret = IndexedDict([(chr(ord("a") + i), 10 + i) for i in range(5)])
request.addfinalizer(lambda: assert_internal_state(ret))
return ret
@pytest.mark.parametrize("indexing", [{"key": "b"}, {"index": 1}, {"index": -4}])
def test_get_key_found(d, indexing):
assert d.get(**indexing) == 11
@pytest.mark.parametrize("indexing", [{"key": "x"}, {"index": 100}, {"index": -6}])
def test_get_specifying_missing_default(d, indexing):
assert d.get(default=5, **indexing) == 5
def test_get_deprecated_param(d):
with pytest.deprecated_call():
assert d.get('x', d='XXX') == 'XXX'
@pytest.mark.parametrize("indexing", [{"key": "x"}, {"index": 100}, {"index": -6}])
def test_get_missing_default(d, indexing):
assert d.get(**indexing) is None
def test_get_duplicate_default(d):
with pytest.raises(ValueError):
d.get(d=None, default=None)
with pytest.raises(ValueError):
d.get(d='XXX', default=None)
with pytest.raises(ValueError):
d.get(d=None, default='XXX')
with pytest.raises(ValueError):
d.get(d='XXX', default='XXX')
def test_get_both_key_and_index(d):
with pytest.raises(TypeError):
d.get(key="a", index=4)
def test_get_no_key_or_index(d):
with pytest.raises(TypeError):
d.get()
@pytest.mark.parametrize("indexing", [{"key": "b"}, {"index": 1}, {"index": -4}])
def test_pop_found(d, indexing):
assert d.pop(**indexing) == 11
assert list(d) == list("acde")
def test_pop_last(d):
assert d.pop() == 14
assert list(d) == list("abcd")
@pytest.mark.parametrize("indexing", [{"key": "x"}, {"index": 100}, {"index": -6}])
def test_pop_missing_default(d, indexing):
assert d.pop(d="XXX", **indexing) == "XXX"
assert list(d) == list("abcde")
def test_pop_duplicate_default(d):
with pytest.raises(ValueError):
d.pop(d='XXX', default='XXX')
def test_pop_missing_key_no_default(d):
with pytest.raises(KeyError):
d.pop("X")
assert list(d) == list("abcde")
@pytest.mark.parametrize("index", [100, -6])
def test_pop_missing_index_no_default(d, index):
with pytest.raises(IndexError):
d.pop(index=index)
assert list(d) == list("abcde")
def test_deprecated_pop_default(d):
with pytest.deprecated_call():
assert d.pop(999, d='XXX') == 'XXX'
def test_pop_empty_default():
d = IndexedDict()
assert d.pop(d="XXX") == "XXX"
def test_pop_empty_no_default():
d = IndexedDict()
with pytest.raises(IndexError):
d.pop()
def test_pop_both_key_and_index(d):
with pytest.raises(TypeError):
d.pop(key="a", index=4)
@pytest.mark.parametrize("indexing", [{"key": "b"}, {"index": 1}, {"index": -4}])
def test_fast_pop_found(d, indexing):
assert d.fast_pop(**indexing) == (11, 1, "e", 14)
assert set(d) == set("acde")
def test_fast_pop_last(d):
assert d.fast_pop() == (14, 4, "e", 14)
assert set(d) == set("abcd")
def test_fast_pop_last_key(d):
assert d.fast_pop("e") == (14, 4, "e", 14)
assert set(d) == set("abcd")
def test_fast_pop_missing_key(d):
with pytest.raises(KeyError):
d.fast_pop("X")
assert list(d) == list("abcde")
def test_fast_pop_missing_index(d):
with pytest.raises(IndexError):
d.fast_pop(index=100)
assert list(d) == list("abcde")
def test_fast_pop_empty():
d = IndexedDict()
with pytest.raises(IndexError):
d.fast_pop()
def test_fast_pop_both_key_and_index(d):
with pytest.raises(TypeError):
d.fast_pop(key="a", index=4)
def test_popitem(d):
assert d.popitem() == ("e", 14)
assert list(d) == list("abcd")
def test_popitem_first(d):
assert d.popitem(last=False) == ("a", 10)
assert list(d) == list("bcde")
def test_popitem_last(d):
assert d.popitem(last=True) == ("e", 14)
assert list(d) == list("abcd")
def test_popitem_index(d):
assert d.popitem(index=2) == ('c', 12)
assert list(d) == list('abde')
def test_popitem_key(d):
assert d.popitem(key='d') == ('d', 13)
assert list(d) == list('abce')
def test_popitem_multiple_params(d):
with pytest.raises(ValueError):
d.popitem(last=True, index=-1)
def test_popitem_empty():
d = IndexedDict()
with pytest.raises(KeyError):
d.popitem()
def test_copy(d):
l = list(d)
d2 = d.copy()
assert_internal_state(d2)
d.fast_pop("e")
assert_internal_state(d)
assert_internal_state(d2)
assert list(d) != l
assert list(d2) == l
d["X"] = "y"
assert_internal_state(d)
assert_internal_state(d2)
assert list(d) != l
assert list(d2) == l
d2["Z"] = "w"
assert_internal_state(d)
assert_internal_state(d2)
@pytest.mark.parametrize("indexing", [{"key": "b"}, {"index": 1}, {"index": -4}])
def test_move_to_end_key_found(d, indexing):
d.move_to_end(**indexing)
assert list(d) == list("acdeb")
def test_move_to_end_noop(d):
d.move_to_end("e")
assert list(d) == list("abcde")
@pytest.mark.parametrize("indexing", [{"key": "b"}, {"index": 1}, {"index": -4}])
def test_move_to_begin_key_found(d, indexing):
d.move_to_end(last=False, **indexing)
assert list(d) == list("bacde")
def test_move_to_begin_noop(d):
d.move_to_end("a", last=False)
assert list(d) == list("abcde")
def test_move_to_end_missing_key(d):
with pytest.raises(KeyError):
d.move_to_end(key="X")
assert list(d) == list("abcde")
@pytest.mark.parametrize("index", [100, -6])
def test_move_to_end_missing_index(d, index):
with pytest.raises(IndexError):
d.move_to_end(index=index)
assert list(d) == list("abcde")
def test_move_to_end_both_key_and_index(d):
with pytest.raises(TypeError):
d.move_to_end(key="a", index=4)
def test_move_to_end_no_key_or_index(d):
with pytest.raises(TypeError):
d.move_to_end()
def test_index(d):
assert d.index("c") == 2
def test_index_missing(d):
with pytest.raises(KeyError):
d.index("X")
def test_key(d):
assert d.key(3) == "d"
def test_key_negative(d):
assert d.key(-2) == "d"
def test_key_missing(d):
with pytest.raises(IndexError):
d.key(100)
def test_len(d):
assert len(d) == 5
def test_getitem(d):
assert d["a"] == 10
assert d["c"] == 12
def test_getitem_missing(d):
with pytest.raises(KeyError):
d["X"] # noqa
def test_setitem_overwrite(d):
d["a"] = 110
assert list(d) == list("abcde")
assert d["a"] == 110
def test_setitem_create(d):
d["x"] = 500
assert list(d) == list("abcdex")
assert d["x"] == 500
def test_delitem(d):
del d["c"]
assert list(d) == list("abde")
def test_delitem_missing(d):
with pytest.raises(KeyError):
del d["x"]
def test_contains(d):
assert "d" in d
assert "x" not in d
def test_keys(d):
assert list(d.keys()) == list("abcde")
def test_values(d):
assert list(d.values()) == [10, 11, 12, 13, 14]
def test_none_key(d):
d[None] = None
assert d[None] is None
assert list(d) == list("abcde") + [None]
def test_repr():
d = IndexedDict()
d[1] = "X"
d["Y"] = 2
d[None] = None
assert repr(d) == "IndexedDict([(1, 'X'), ('Y', 2), (None, None)])"
def test_str():
d = IndexedDict()
d[1] = "X"
d["Y"] = 2
d[None] = None
assert str(d) == "IndexedDict({1: 'X', 'Y': 2, None: None})"
def test_items(d):
assert list(d.items()) == [(chr(ord("a") + i), 10 + i) for i in range(5)]
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