def test_duck_call_raise():
"""
Should raise TypeError
"""
obj = Obj(42)
duck = Duck(obj)
with pytest.raises(TypeError):
duck.call([["bad", "arguments"]])
def test_duck_call_default():
"""
Should return default value.
"""
obj = Obj(42)
duck = Duck(obj)
assert duck.call([["bad", "arguments"]], default=1234) == 1234
def test_duck_call():
"""
Should return the result of the first successful call the callable
object.
"""
obj = Obj(42)
duck = Duck(obj)
assert duck.call([["foo"]], [], [["hello1", "world1"]],
[["hello"], {
"argument2": "world"
}]) == obj("hello", argument2="world")
def test_duck_noargs_call():
"""
Should return the result of the first successful call the callable
object.
"""
def some_func():
return "hello!"
duck = Duck(some_func)
assert (duck.call([["foo"]], [], [["hello1", "world1"]],
[["hello"], {
"argument2": "world"
}]) == "hello!")