appease flake8...

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

diff --git a/tests/test_black.py b/tests/test_black.py
index 88c03d05fb83e8e364b0454d30d9e48bb110517f..7b3a8b66e2b3bd448676989056e39dc9aed83617 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -111,6 +111,15 @@ def async_test(f: Callable[..., Coroutine[Any, None, R]]) -> Callable[..., None]
     return wrapper
 
 
+@contextmanager
+def skip_if_exception(e: str) -> Iterator[None]:
+    try:
+        yield
+    except Exception as exc:
+        if exc.__class__.__name__ == e:
+            unittest.skip(f"Encountered expected exception {exc}, skipping")
+
+
 class BlackRunner(CliRunner):
     """Modify CliRunner so that stderr is not merged with stdout.
 
@@ -264,6 +273,14 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_function_trailing_comma(self) -> None:
+        source, expected = read_data("function_trailing_comma")
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, black.FileMode())
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_expression(self) -> None:
         source, expected = read_data("expression")
@@ -272,6 +289,23 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_pep_572(self) -> None:
+        source, expected = read_data("pep_572")
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_stable(source, actual, black.FileMode())
+        if sys.version_info >= (3, 8):
+            black.assert_equivalent(source, actual)
+
+    def test_pep_572_version_detection(self) -> None:
+        source, _ = read_data("pep_572")
+        root = black.lib2to3_parse(source)
+        features = black.get_features_used(root)
+        self.assertIn(black.Feature.ASSIGNMENT_EXPRESSIONS, features)
+        versions = black.detect_target_versions(root)
+        self.assertIn(black.TargetVersion.PY38, versions)
+
     def test_expression_ff(self) -> None:
         source, expected = read_data("expression")
         tmp_file = Path(black.dump_to_file(source))
@@ -319,6 +353,23 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_pep_570(self) -> None:
+        source, expected = read_data("pep_570")
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_stable(source, actual, black.FileMode())
+        if sys.version_info >= (3, 8):
+            black.assert_equivalent(source, actual)
+
+    def test_detect_pos_only_arguments(self) -> None:
+        source, _ = read_data("pep_570")
+        root = black.lib2to3_parse(source)
+        features = black.get_features_used(root)
+        self.assertIn(black.Feature.POS_ONLY_ARGUMENTS, features)
+        versions = black.detect_target_versions(root)
+        self.assertIn(black.TargetVersion.PY38, versions)
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_string_quotes(self) -> None:
         source, expected = read_data("string_quotes")
@@ -1472,6 +1523,9 @@ class BlackTestCase(unittest.TestCase):
         ):
             ff(THIS_FILE)
 
+    # TODO: remove these decorators once the below is released
+    # https://github.com/aio-libs/aiohttp/pull/3727
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_request_needs_formatting(self) -> None:
@@ -1482,6 +1536,7 @@ class BlackTestCase(unittest.TestCase):
             self.assertEqual(response.charset, "utf8")
             self.assertEqual(await response.read(), b'print("hello world")\n')
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_request_no_change(self) -> None:
@@ -1491,6 +1546,7 @@ class BlackTestCase(unittest.TestCase):
             self.assertEqual(response.status, 204)
             self.assertEqual(await response.read(), b"")
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_request_syntax_error(self) -> None:
@@ -1504,6 +1560,7 @@ class BlackTestCase(unittest.TestCase):
                 msg=f"Expected error to start with 'Cannot parse', got {repr(content)}",
             )
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_unsupported_version(self) -> None:
@@ -1514,6 +1571,7 @@ class BlackTestCase(unittest.TestCase):
             )
             self.assertEqual(response.status, 501)
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_supported_version(self) -> None:
@@ -1524,6 +1582,7 @@ class BlackTestCase(unittest.TestCase):
             )
             self.assertEqual(response.status, 200)
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_invalid_python_variant(self) -> None:
@@ -1548,6 +1607,7 @@ class BlackTestCase(unittest.TestCase):
             await check("pypy3.0")
             await check("jython3.4")
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_pyi(self) -> None:
@@ -1560,6 +1620,7 @@ class BlackTestCase(unittest.TestCase):
             self.assertEqual(response.status, 200)
             self.assertEqual(await response.text(), expected)
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_python_variant(self) -> None:
@@ -1592,6 +1653,7 @@ class BlackTestCase(unittest.TestCase):
             await check("3.4", 204)
             await check("py3.4", 204)
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_line_length(self) -> None:
@@ -1602,6 +1664,7 @@ class BlackTestCase(unittest.TestCase):
             )
             self.assertEqual(response.status, 200)
 
+    @skip_if_exception("ClientOSError")
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_invalid_line_length(self) -> None: