def test_recurse_through_attrs_different_values():
a = Foo(1)
a.y = a
b = Foo(2)
b.y = b
assert not recursive_eq(a, b)
def test_equal_self_referenced_lists():
x = []
x.append(x)
y = []
y.append(y)
assert recursive_eq(x, y)
def test_recurse_through_attrs():
a = Foo(1)
a.y = a
b = Foo(1)
b.y = a
assert recursive_eq(a, b)
def test_equal_self_referenced_lists_with_values_of_different_type():
x = [1]
x.append(x)
y = [1]
y.append(y)
assert recursive_eq(x, y)
def test_unequal_self_referenced_lists_with_values():
x = [1]
x.append(x)
y = [2]
y.append(y)
assert not recursive_eq(x, y)
def test_equal_mutually_referenced_lists():
x = []
y = []
x.append(y)
y.append(x)
assert recursive_eq(x, y)
def test_different_attrs_classes():
a = Foo(1)
a.y = a
b = Bar(1)
b.y = b
assert not recursive_eq(a, b)
def test_different_lengths():
assert not recursive_eq((), ((),))
def test_equal_mispatch_compound_and_primitive():
assert not recursive_eq([[], []], [(), ()])
def test_equal_primitives():
x = bytes(1000)
y = bytes(bytearray(x))
assert x is not y
assert recursive_eq([x], [y])
def test_differing_structures():
x = [[]]
x[0].append(x)
y = []
y.append(y)
assert recursive_eq(x, y)
def test_needs_implementation():
x = Baz()
y = Baz()
with pytest.raises(NotImplementedError):
recursive_eq(x, y)
