def test_collection_index() -> None:
c1 = Collection([0, 1, 2])
assert c1[0] == 0
assert c1[-1] == 2
assert c1[:] == c1
assert c1[1:] == Collection([1, 2])
assert c1[:1] == Collection([0])
def test_collection_equality() -> None:
assert () != Collection()
assert Collection() != ()
assert Collection([]) == Collection([])
c1 = Collection([1, 2, 3])
assert c1 == Collection([1, 2, 3])
assert c1 != Collection([3, 2, 1])
assert c1 != Collection([])
assert c1 != Collection([1, 2])
e1 = Examples([1, 2, 3])
assert e1 == Examples([1, 2, 3])
assert e1 != Examples2([1, 2, 3])
def test_collection_repr() -> None:
assert repr(Collection([])) == "Collection([])"
assert repr(Examples([])) == "Examples([])"
assert repr(Collection([1, 2, 3])) == "Collection([1, 2, 3])"
assert repr(Examples([1, 2, 3])) == "Examples([1, 2, 3])"
def test_collection_bool() -> None:
assert bool(Collection([0])) is True
assert bool(Collection([])) is False
def test_collection_hash() -> None:
assert hash(Collection([])) == hash(Collection([]))
c1 = Collection([1, 2, 3])
assert hash(c1) == hash(Collection([1, 2, 3]))
assert hash(c1) == hash(Examples([1, 2, 3]))
def test_collection_reversed() -> None:
assert list(reversed(Collection([1, 2, 3]))) == [3, 2, 1]
def test_collection_length() -> None:
assert len(Collection([])) == 0
assert len(Collection([1, 2])) == 2
def test_collection_iteration() -> None:
c1 = Collection([1, 2])
assert list(iter(c1)) == [1, 2]
assert [x for x in c1] == [1, 2]
def test_collection_contains() -> None:
c1 = Collection([1, 2])
assert 1 in c1
assert 2 in c1
assert 200 not in c1
assert "bad" not in c1 # type: ignore[comparison-overlap]