Adding documentation to the README for import errors in vim (#1317)

[etc/vim.git] / tests / test_black.py

diff --git a/tests/test_black.py b/tests/test_black.py
index 8fafabddda8cf4480958fb37c2af14360f52c59d..6fb01f73d28c5e962a8b2081c00a0472f5b0cea0 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -82,7 +82,7 @@ def cache_dir(exists: bool = True) -> Iterator[Path]:
 
 
 @contextmanager
-def event_loop(close: bool) -> Iterator[None]:
+def event_loop() -> Iterator[None]:
     policy = asyncio.get_event_loop_policy()
     loop = policy.new_event_loop()
     asyncio.set_event_loop(loop)
@@ -90,8 +90,7 @@ def event_loop(close: bool) -> Iterator[None]:
         yield
 
     finally:
-        if close:
-            loop.close()
+        loop.close()
 
 
 @contextmanager
@@ -162,7 +161,12 @@ class BlackTestCase(unittest.TestCase):
         self.assertEqual(
             result.exit_code,
             exit_code,
-            msg=f"Failed with args: {args}. Stderr: {runner.stderr_bytes.decode()!r}",
+            msg=(
+                f"Failed with args: {args}\n"
+                f"stdout: {runner.stdout_bytes.decode()!r}\n"
+                f"stderr: {runner.stderr_bytes.decode()!r}\n"
+                f"exception: {result.exception}"
+            ),
         )
 
     @patch("black.dump_to_file", dump_to_stderr)
@@ -1255,7 +1259,7 @@ class BlackTestCase(unittest.TestCase):
             with src.open("r") as fobj:
                 self.assertEqual(fobj.read(), "print('hello')")
 
-    @event_loop(close=False)
+    @event_loop()
     def test_cache_multiple_files(self) -> None:
         mode = black.FileMode()
         with cache_dir() as workspace, patch(
@@ -1335,7 +1339,7 @@ class BlackTestCase(unittest.TestCase):
             black.write_cache({}, [], mode)
             self.assertTrue(workspace.exists())
 
-    @event_loop(close=False)
+    @event_loop()
     def test_failed_formatting_does_not_get_cached(self) -> None:
         mode = black.FileMode()
         with cache_dir() as workspace, patch(
@@ -1358,19 +1362,18 @@ class BlackTestCase(unittest.TestCase):
             mock.side_effect = OSError
             black.write_cache({}, [], mode)
 
-    @patch("black.ProcessPoolExecutor", autospec=True)
-    def test_works_in_mono_process_only_environment(self, executor: MagicMock) -> None:
-        self.skipTest("this test fails when run with the rest of the suite")
-        executor.side_effect = OSError()
+    @event_loop()
+    @patch("black.ProcessPoolExecutor", MagicMock(side_effect=OSError))
+    def test_works_in_mono_process_only_environment(self) -> None:
         with cache_dir() as workspace:
             for f in [
                 (workspace / "one.py").resolve(),
                 (workspace / "two.py").resolve(),
             ]:
-                f.write_text("print('hello')")
+                f.write_text('print("hello")\n')
             self.invokeBlack([str(workspace)])
 
-    @event_loop(close=False)
+    @event_loop()
     def test_check_diff_use_together(self) -> None:
         with cache_dir():
             # Files which will be reformatted.
@@ -1433,7 +1436,7 @@ class BlackTestCase(unittest.TestCase):
             self.assertNotIn(path, normal_cache)
         self.assertEqual(actual, expected)
 
-    @event_loop(close=False)
+    @event_loop()
     def test_multi_file_force_pyi(self) -> None:
         reg_mode = black.FileMode()
         pyi_mode = black.FileMode(is_pyi=True)
@@ -1485,7 +1488,7 @@ class BlackTestCase(unittest.TestCase):
             self.assertNotIn(path, normal_cache)
         self.assertEqual(actual, expected)
 
-    @event_loop(close=False)
+    @event_loop()
     def test_multi_file_force_py36(self) -> None:
         reg_mode = black.FileMode()
         py36_mode = black.FileMode(target_versions=black.PY36_VERSIONS)