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import os
import sys
import unittest
from typing import Iterable
try:
from mypy import api
except ImportError:
api = None
sys.path[0:0] = [""]
TEST_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "mypy_fails")
def get_tests() -> Iterable[str]:
for dirpath, _, filenames in os.walk(TEST_PATH):
for filename in filenames:
yield os.path.join(dirpath, filename)
class TestMypyFails(unittest.TestCase):
def ensure_mypy_fails(self, filename: str) -> None:
if api is None:
raise unittest.SkipTest("Mypy is not installed")
stdout, stderr, exit_status = api.run([filename])
self.assertTrue(exit_status, msg=stdout)
def test_mypy_failures(self) -> None:
for filename in get_tests():
with self.subTest(filename=filename):
self.ensure_mypy_fails(filename)
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