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import io
import typing
from unittest import mock
import pytest
from mitmproxy.utils import typecheck
class TBase:
def __init__(self, bar: int):
pass
class T(TBase):
def __init__(self, foo: str):
super(T, self).__init__(42)
def test_get_arg_type_from_constructor_annotation():
assert typecheck.get_arg_type_from_constructor_annotation(T, "foo") == str
assert typecheck.get_arg_type_from_constructor_annotation(T, "bar") == int
assert not typecheck.get_arg_type_from_constructor_annotation(T, "baz")
def test_check_type():
typecheck.check_type("foo", 42, int)
with pytest.raises(TypeError):
typecheck.check_type("foo", 42, str)
with pytest.raises(TypeError):
typecheck.check_type("foo", None, str)
with pytest.raises(TypeError):
typecheck.check_type("foo", b"foo", str)
def test_check_union():
typecheck.check_type("foo", 42, typing.Union[int, str])
typecheck.check_type("foo", "42", typing.Union[int, str])
with pytest.raises(TypeError):
typecheck.check_type("foo", [], typing.Union[int, str])
def test_check_tuple():
with pytest.raises(TypeError):
typecheck.check_type("foo", None, typing.Tuple[int, str])
with pytest.raises(TypeError):
typecheck.check_type("foo", (), typing.Tuple[int, str])
with pytest.raises(TypeError):
typecheck.check_type("foo", (42, 42), typing.Tuple[int, str])
with pytest.raises(TypeError):
typecheck.check_type("foo", ("42", 42), typing.Tuple[int, str])
typecheck.check_type("foo", (42, "42"), typing.Tuple[int, str])
def test_check_sequence():
typecheck.check_type("foo", [10], typing.Sequence[int])
with pytest.raises(TypeError):
typecheck.check_type("foo", ["foo"], typing.Sequence[int])
with pytest.raises(TypeError):
typecheck.check_type("foo", [10, "foo"], typing.Sequence[int])
with pytest.raises(TypeError):
typecheck.check_type("foo", [b"foo"], typing.Sequence[str])
with pytest.raises(TypeError):
typecheck.check_type("foo", "foo", typing.Sequence[str])
# Python 3.5.0 only defines __parameters__
m = mock.Mock()
m.__str__ = lambda self: "typing.Sequence"
m.__parameters__ = (int,)
typecheck.check_type("foo", [10], m)
def test_check_io():
typecheck.check_type("foo", io.StringIO(), typing.IO[str])
with pytest.raises(TypeError):
typecheck.check_type("foo", "foo", typing.IO[str])
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