def mixed_positionals_keyword_arguments(self):
func = lambda a, b, c=3: None
Assert(Signature.from_function(func)) == (['a', 'b'], [('c', 3)], None,
None)
func = lambda a, b, c=3, d=4: None
Assert(Signature.from_function(func)) == (['a', 'b'], [('c', 3),
('d', 4)], None,
None)
def mixed_positionals_keyword_arguments(self):
func = lambda a, b, c=3: None
Assert(Signature.from_function(func)) == (
['a', 'b'], [('c', 3)], None, None
)
func = lambda a, b, c=3, d=4: None
Assert(Signature.from_function(func)) == (
['a', 'b'], [('c', 3), ('d', 4)], None, None
)
def arguments_mixed_positionals(self):
sig = Signature.from_function(lambda a, b, *args: None)
Assert(sig.bind_arguments((1, 2))) == dict(a=1, b=2, args=())
Assert(sig.bind_arguments((1, 2, 3))) == dict(a=1, b=2, args=(3, ))
with Assert.raises(ValueError):
Assert(sig.bind_arguments())
def arguments_only_positionals(self):
sig = Signature.from_function(lambda a, b, c: None)
Assert(sig.bind_arguments((1, 2, 3))) == dict(a=1, b=2, c=3)
Assert(sig.bind_arguments((1, 2), {'c': 3})) == dict(a=1, b=2, c=3)
tests = [([('a', 1), ('b', 2)], "'.' is missing"),
([('a', 1)], "'.' and '.' are missing"),
([], "'.', '.' and '.' are missing")]
all_names = set('abc')
for args, message in tests:
names, values = [], []
for name, value in args:
names.append(name)
values.append(value)
with Assert.raises(ValueError) as exc_args:
sig.bind_arguments(values)
with Assert.raises(ValueError) as exc_kwargs:
sig.bind_arguments(kwargs=dict(args))
for exc in [exc_args, exc_kwargs]:
err_msg = exc.args[0].obj
assert re.match(message, err_msg) is not None
for name in all_names.difference(names):
assert name in err_msg
with Assert.raises(ValueError) as exc:
sig.bind_arguments((1, 2, 3), {'c': 4})
Assert(exc.args[0]) == "got multiple values for 'c'"
def arguments_only_positionals(self):
sig = Signature.from_function(lambda a, b, c: None)
Assert(sig.bind_arguments((1, 2, 3))) == dict(a=1, b=2, c=3)
Assert(sig.bind_arguments((1, 2), {'c': 3})) == dict(a=1, b=2, c=3)
tests = [
([('a', 1), ('b', 2)], "'.' is missing"),
([('a', 1)], "'.' and '.' are missing"),
([], "'.', '.' and '.' are missing")
]
all_names = set('abc')
for args, message in tests:
names, values = [], []
for name, value in args:
names.append(name)
values.append(value)
with Assert.raises(ValueError) as exc_args:
sig.bind_arguments(values)
with Assert.raises(ValueError) as exc_kwargs:
sig.bind_arguments(kwargs=dict(args))
for exc in [exc_args, exc_kwargs]:
err_msg = exc.args[0].obj
assert re.match(message, err_msg) is not None
for name in all_names.difference(names):
assert name in err_msg
with Assert.raises(ValueError) as exc:
sig.bind_arguments((1, 2, 3), {'c': 4})
Assert(exc.args[0]) == "got multiple values for 'c'"
def arguments_mixed_positionals(self):
sig = Signature.from_function(lambda a, b, *args: None)
Assert(sig.bind_arguments((1, 2))) == dict(a=1, b=2, args=())
Assert(sig.bind_arguments((1, 2, 3))) == dict(a=1, b=2, args=(3, ))
with Assert.raises(ValueError):
Assert(sig.bind_arguments())
def arguments_no_args(self):
sig = Signature.from_function(lambda: None)
Assert(sig.bind_arguments()) == {}
with Assert.raises(ValueError) as exc:
sig.bind_arguments((1, ), {})
Assert(exc.args[0]) == 'expected at most 0 positional arguments, got 1'
tests = [({
'a': 1
}, "got unexpected keyword argument '.'"),
({
'a': 1,
'b': 2
}, "got unexpected keyword arguments '.' and '.'"),
({
'a': 1,
'b': 2,
'c': 3
}, "got unexpected keyword arguments '.', '.' and '.'")]
for kwargs, message in tests:
with Assert.raises(ValueError) as exc:
sig.bind_arguments(kwargs=kwargs)
err_msg = exc.args[0].obj
assert re.match(message, err_msg) is not None
for name in kwargs:
assert name in err_msg
def arguments_no_args(self):
sig = Signature.from_function(lambda: None)
Assert(sig.bind_arguments()) == {}
with Assert.raises(ValueError) as exc:
sig.bind_arguments((1, ), {})
Assert(exc.args[0]) == 'expected at most 0 positional arguments, got 1'
tests = [
({'a': 1}, "got unexpected keyword argument '.'"),
({'a': 1, 'b': 2}, "got unexpected keyword arguments '.' and '.'"),
(
{'a': 1, 'b': 2, 'c': 3},
"got unexpected keyword arguments '.', '.' and '.'"
)
]
for kwargs, message in tests:
with Assert.raises(ValueError) as exc:
sig.bind_arguments(kwargs=kwargs)
err_msg = exc.args[0].obj
assert re.match(message, err_msg) is not None
for name in kwargs:
assert name in err_msg
def arguments_mixed_keyword_arguments(self):
sig = Signature.from_function(lambda a=1, b=2, **kwargs: None)
Assert(sig.bind_arguments()) == dict(a=1, b=2, kwargs={})
Assert(sig.bind_arguments((3, 4))) == dict(a=3, b=4, kwargs={})
Assert(sig.bind_arguments((), {'c': 3})) == dict(a=1,
b=2,
kwargs=dict(c=3))
def arguments_mixed_keyword_arguments(self):
sig = Signature.from_function(lambda a=1, b=2, **kwargs: None)
Assert(sig.bind_arguments()) == dict(a=1, b=2, kwargs={})
Assert(sig.bind_arguments((3, 4))) == dict(a=3, b=4, kwargs={})
Assert(sig.bind_arguments((), {'c': 3})) == dict(
a=1,
b=2,
kwargs=dict(c=3)
)
def arguments_mixed_keyword_arguments_arbitary_positionals(self):
sig = Signature.from_function(lambda a=1, b=2, *args: None)
Assert(sig.bind_arguments()) == dict(a=1, b=2, args=())
Assert(sig.bind_arguments((3, 4))) == dict(a=3, b=4, args=())
Assert(sig.bind_arguments((3, 4, 5))) == dict(a=3, b=4, args=(5, ))
Assert(sig.bind_arguments((), {'a': 3, 'b': 4})) == dict(
a=3, b=4, args=()
)
with Assert.raises(ValueError):
sig.bind_arguments((3, ), {'a': 4})
def arguments_mixed_keyword_arguments_arbitary_positionals(self):
sig = Signature.from_function(lambda a=1, b=2, *args: None)
Assert(sig.bind_arguments()) == dict(a=1, b=2, args=())
Assert(sig.bind_arguments((3, 4))) == dict(a=3, b=4, args=())
Assert(sig.bind_arguments((3, 4, 5))) == dict(a=3, b=4, args=(5, ))
Assert(sig.bind_arguments((), {
'a': 3,
'b': 4
})) == dict(a=3, b=4, args=())
with Assert.raises(ValueError):
sig.bind_arguments((3, ), {'a': 4})
def arguments_mixed_positional_arbitary_keyword_arguments(self):
sig = Signature.from_function(lambda a, b, **kwargs: None)
Assert(sig.bind_arguments((1, 2))) == dict(a=1, b=2, kwargs={})
Assert(sig.bind_arguments((1, 2), {'c': 3})) == dict(a=1,
b=2,
kwargs=dict(c=3))
Assert(sig.bind_arguments((), dict(a=1, b=2))) == dict(a=1,
b=2,
kwargs={})
with Assert.raises(ValueError):
sig.bind_arguments()
with Assert.raises(ValueError):
sig.bind_arguments((1, 2), {'a': 3})
def arguments_mixed_positional_arbitary_keyword_arguments(self):
sig = Signature.from_function(lambda a, b, **kwargs: None)
Assert(sig.bind_arguments((1, 2))) == dict(a=1, b=2, kwargs={})
Assert(sig.bind_arguments((1, 2), {'c': 3})) == dict(
a=1,
b=2,
kwargs=dict(c=3)
)
Assert(sig.bind_arguments((), dict(a=1, b=2))) == dict(
a=1,
b=2,
kwargs={}
)
with Assert.raises(ValueError):
sig.bind_arguments()
with Assert.raises(ValueError):
sig.bind_arguments((1, 2), {'a': 3})
def positionals(self):
func = lambda a, b, c: None
Assert(Signature.from_function(func)) == (['a', 'b', 'c'], [], None, None)
def positionals(self):
func = lambda a, b, c: None
Assert(Signature.from_function(func)) == (['a', 'b',
'c'], [], None, None)
def keyword_arguments(self):
func = lambda a=1, b=2, c=3: None
Assert(Signature.from_function(func)) == ([], [('a', 1), ('b', 2),
('c', 3)], None, None)
def arguments_arbitary_keyword_arguments(self):
sig = Signature.from_function(lambda **kwargs: None)
Assert(sig.bind_arguments()) == {'kwargs': {}}
Assert(sig.bind_arguments((), {'a': 1})) == {'kwargs': {'a': 1}}
def arbitary_positionals(self):
foo = lambda *foo: None
bar = lambda *bar: None
for func, name in [(foo, 'foo'), (bar, 'bar')]:
Assert(Signature.from_function(func)) == ([], [], name, None)
def arbitary_keyword_arguments(self):
spam = lambda **spam: None
eggs = lambda **eggs: None
for func, name in [(spam, 'spam'), (eggs, 'eggs')]:
Assert(Signature.from_function(func)) == ([], [], None, name)
def arbitary_positionals(self):
foo = lambda *foo: None
bar = lambda *bar: None
for func, name in [(foo, 'foo'), (bar, 'bar')]:
Assert(Signature.from_function(func)) == ([], [], name, None)
def keyword_arguments(self):
func = lambda a=1, b=2, c=3: None
Assert(Signature.from_function(func)) == (
[], [('a', 1), ('b', 2), ('c', 3)], None, None
)
def arguments_arbitary_keyword_arguments(self):
sig = Signature.from_function(lambda **kwargs: None)
Assert(sig.bind_arguments()) == {'kwargs': {}}
Assert(sig.bind_arguments((), {'a': 1})) == {'kwargs': {'a': 1}}
def arguments_arbitary_positionals(self):
sig = Signature.from_function(lambda *args: None)
Assert(sig.bind_arguments()) == {'args': ()}
Assert(sig.bind_arguments((1, 2, 3))) == {'args': (1, 2, 3)}
def arbitary_keyword_arguments(self):
spam = lambda **spam: None
eggs = lambda **eggs: None
for func, name in [(spam, 'spam'), (eggs, 'eggs')]:
Assert(Signature.from_function(func)) == ([], [], None, name)
def arguments_arbitary_positionals(self):
sig = Signature.from_function(lambda *args: None)
Assert(sig.bind_arguments()) == {'args': ()}
Assert(sig.bind_arguments((1, 2, 3))) == {'args': (1, 2, 3)}
def arguments_only_keyword_arguments(self):
sig = Signature.from_function(lambda a=1, b=2, c=3: None)
Assert(sig.bind_arguments()) == dict(a=1, b=2, c=3)
Assert(sig.bind_arguments(('a', ))) == dict(a='a', b=2, c=3)
Assert(sig.bind_arguments((), {'a': 'a'})) == dict(a='a', b=2, c=3)
def arguments_only_keyword_arguments(self):
sig = Signature.from_function(lambda a=1, b=2, c=3: None)
Assert(sig.bind_arguments()) == dict(a=1, b=2, c=3)
Assert(sig.bind_arguments(('a', ))) == dict(a='a', b=2, c=3)
Assert(sig.bind_arguments((), {'a': 'a'})) == dict(a='a', b=2, c=3)