def test_Overload_mixins():
f = Overload()
@f.register
def f(t: int):
return t + 1
g = Overload()
@g.register
def g(t: str):
return t.upper()
h = Overload(mixins=[f, g])
assert f(15) == 16
with pytest.raises(KeyError):
f("hello")
assert g("hello") == "HELLO"
with pytest.raises(KeyError):
g(15)
assert h(15) == 16
assert h("hello") == "HELLO"
def test_Overload_bootstrap():
f = Overload().bootstrap()
assert f.bootstrap() is f
@f.register
def f(self, xs: list):
return [self(x) for x in xs]
@f.register
def f(self, x: int):
return x + 1
@f.register
def f(self, x: object):
return "A"
assert f([1, 2, "xxx", [3, 4]]) == [2, 3, "A", [4, 5]]
@f.variant
def g(self, x: object):
return "B"
# This does not interfere with f
assert f([1, 2, "xxx", [3, 4]]) == [2, 3, "A", [4, 5]]
# The new method in g is used
assert g([1, 2, "xxx", [3, 4]]) == [2, 3, "B", [4, 5]]
def test_Overload():
o = Overload()
@o.register
def f(x, y: int):
return "int"
@o.register # noqa: F811
def f(x, y: float):
return "float"
assert f(1, 2) == "int"
assert f(1, 2.0) == "float"
with pytest.raises(Exception):
@o.register # noqa: F811
def f(x: object, y: object):
return "too many annotations"
with pytest.raises(Exception):
@o.register # noqa: F811
def f(x: object, y):
return "wrong arg to annotate"
@o.register # noqa: F811
def f(x, y: "object"):
return "object"
assert f(1, 2) == "int"
assert f(1, 2.0) == "float"
assert f(1, "hello") == "object"
def test_Overload():
o = Overload()
@o.register
def f(x, y: int):
return 'int'
@o.register # noqa: F811
def f(x, y: float):
return 'float'
assert f(1, 2) == 'int'
assert f(1, 2.0) == 'float'
with pytest.raises(Exception):
@o.register # noqa: F811
def f(x: object, y: object):
return 'too many annotations'
with pytest.raises(Exception):
@o.register # noqa: F811
def f(x: object, y):
return 'wrong arg to annotate'
@o.register # noqa: F811
def f(x, y: 'object'):
return 'object'
assert f(1, 2) == 'int'
assert f(1, 2.0) == 'float'
assert f(1, 'hello') == 'object'
def test_Overload_repr():
humptydumpty = Overload()
@humptydumpty.register
def humptydumpty(x: int):
return x
@humptydumpty.register
def ignore_this_name(x: str):
return x
assert humptydumpty.name.endswith(".humptydumpty")
r = repr(humptydumpty)
assert r.startswith("<Overload ")
assert r.endswith(".humptydumpty>")
def test_Overload_bootstrap():
f = Overload(bootstrap=True)
@f.register
def f(self, xs: list):
return [self(x) for x in xs]
@f.register
def f(self, x: int):
return x + 1
@f.register
def f(self, x: object):
return "A"
assert f([1, 2, "xxx", [3, 4]]) == [2, 3, "A", [4, 5]]
@f.variant
def g(self, x: object):
return "B"
# This does not interfere with f
assert f([1, 2, "xxx", [3, 4]]) == [2, 3, "A", [4, 5]]
# The new method in g is used
assert g([1, 2, "xxx", [3, 4]]) == [2, 3, "B", [4, 5]]
@f.variant(postprocess=lambda x: {"result": x})
def h(self, x: object):
return "C"
# Only the end result is postprocessed
assert h([1, 2, "xxx", [3, 4]]) == {"result": [2, 3, "C", [4, 5]]}
@h.variant
def i(self, x: object):
return "D"
# Postprocessor is kept
assert i([1, 2, "xxx", [3, 4]]) == {"result": [2, 3, "D", [4, 5]]}
def test_Overload_variant_wrapper():
f = Overload()
@f.register
def f(x: int):
return x + 1
assert f(1) == 2
@f.variant_wrapper
def g(fn, x):
return {fn(x)}
assert g(1) == {2}
@f.variant_wrapper(initial_state=lambda: 10)
def h(fn, self, x):
return self.state * x
assert h(1) == 10
def test_Overload_wrapper():
f = Overload()
@f.wrapper
def f(fn, x):
return [fn(x)]
with pytest.raises(TypeError):
@f.wrapper
def f(fn, x):
return [fn(x)]
@f.register
def f(x: int):
return x + 1
@f.register
def f(xs: tuple):
return tuple(f(x) for x in xs)
assert f(1) == [2]
assert f((1, 2, (3, 4))) == [([2], [3], [([4], [5])])]
def test_Overload_stateful():
f = Overload(initial_state=lambda: -1)
@f.wrapper
def f(fn, self, x):
self.state += 1
return fn(self, x)
@f.register
def f(self, x: type(None)):
return self.state
@f.register
def f(self, xs: tuple):
return tuple(self(x) for x in xs)
assert f((None, None)) == (1, 2)
assert f((None, (None, None))) == (1, (3, 4))
assert f((None, (None, None))) == (1, (3, 4))
@f.variant
def g(self, x: type(None)):
return self.state * 10
assert g((None, None)) == (10, 20)
assert g((None, (None, None))) == (10, (30, 40))
assert g((None, (None, None))) == (10, (30, 40))
@f.variant(initial_state=lambda: 0)
def h(self, x: type(None)):
return self.state * 100
assert h((None, None)) == (200, 300)
assert h((None, (None, None))) == (200, (400, 500))
assert h((None, (None, None))) == (200, (400, 500))