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remove obviously unnecessary parentheses (#850)
[etc/vim.git] / tests / test_black.py
diff --git a/tests/test_black.py b/tests/test_black.py
index 896ad0c37dd7e7238ad443a51962b3f9864fb2ac..88c03d05fb83e8e364b0454d30d9e48bb110517f 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -2,7 +2,7 @@
 import asyncio
 import logging
 from concurrent.futures import ThreadPoolExecutor
 import asyncio
 import logging
 from concurrent.futures import ThreadPoolExecutor
-from contextlib import contextmanager, redirect_stderr
+from contextlib import contextmanager
 from functools import partial, wraps
 from io import BytesIO, TextIOWrapper
 import os
 from functools import partial, wraps
 from io import BytesIO, TextIOWrapper
 import os
@@ -396,6 +396,14 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_comment_after_escaped_newline(self) -> None:
+        source, expected = read_data("comment_after_escaped_newline")
+        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_cantfit(self) -> None:
         source, expected = read_data("cantfit")
     @patch("black.dump_to_file", dump_to_stderr)
     def test_cantfit(self) -> None:
         source, expected = read_data("cantfit")
@@ -428,6 +436,14 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_remove_parens(self) -> None:
+        source, expected = read_data("remove_parens")
+        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_string_prefixes(self) -> None:
         source, expected = read_data("string_prefixes")
     @patch("black.dump_to_file", dump_to_stderr)
     def test_string_prefixes(self) -> None:
         source, expected = read_data("string_prefixes")
@@ -466,7 +482,7 @@ class BlackTestCase(unittest.TestCase):
         source, expected = read_data("python2")
         actual = fs(source)
         self.assertFormatEqual(expected, actual)
         source, expected = read_data("python2")
         actual = fs(source)
         self.assertFormatEqual(expected, actual)
-        # black.assert_equivalent(source, actual)
+        black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
 
     @patch("black.dump_to_file", dump_to_stderr)
         black.assert_stable(source, actual, black.FileMode())
 
     @patch("black.dump_to_file", dump_to_stderr)
@@ -475,6 +491,7 @@ class BlackTestCase(unittest.TestCase):
         mode = black.FileMode(target_versions={TargetVersion.PY27})
         actual = fs(source, mode=mode)
         self.assertFormatEqual(expected, actual)
         mode = black.FileMode(target_versions={TargetVersion.PY27})
         actual = fs(source, mode=mode)
         self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, mode)
 
     @patch("black.dump_to_file", dump_to_stderr)
         black.assert_stable(source, actual, mode)
 
     @patch("black.dump_to_file", dump_to_stderr)
@@ -482,6 +499,7 @@ class BlackTestCase(unittest.TestCase):
         source, expected = read_data("python2_unicode_literals")
         actual = fs(source)
         self.assertFormatEqual(expected, actual)
         source, expected = read_data("python2_unicode_literals")
         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)
         black.assert_stable(source, actual, black.FileMode())
 
     @patch("black.dump_to_file", dump_to_stderr)
@@ -492,8 +510,24 @@ class BlackTestCase(unittest.TestCase):
         self.assertFormatEqual(expected, actual)
         black.assert_stable(source, actual, mode)
 
         self.assertFormatEqual(expected, actual)
         black.assert_stable(source, actual, mode)
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_async_as_identifier(self) -> None:
+        source_path = (THIS_DIR / "data" / "async_as_identifier.py").resolve()
+        source, expected = read_data("async_as_identifier")
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        major, minor = sys.version_info[:2]
+        if major < 3 or (major <= 3 and minor < 7):
+            black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, black.FileMode())
+        # ensure black can parse this when the target is 3.6
+        self.invokeBlack([str(source_path), "--target-version", "py36"])
+        # but not on 3.7, because async/await is no longer an identifier
+        self.invokeBlack([str(source_path), "--target-version", "py37"], exit_code=123)
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_python37(self) -> None:
     @patch("black.dump_to_file", dump_to_stderr)
     def test_python37(self) -> None:
+        source_path = (THIS_DIR / "data" / "python37.py").resolve()
         source, expected = read_data("python37")
         actual = fs(source)
         self.assertFormatEqual(expected, actual)
         source, expected = read_data("python37")
         actual = fs(source)
         self.assertFormatEqual(expected, actual)
@@ -501,6 +535,10 @@ class BlackTestCase(unittest.TestCase):
         if major > 3 or (major == 3 and minor >= 7):
             black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
         if major > 3 or (major == 3 and minor >= 7):
             black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, black.FileMode())
+        # ensure black can parse this when the target is 3.7
+        self.invokeBlack([str(source_path), "--target-version", "py37"])
+        # but not on 3.6, because we use async as a reserved keyword
+        self.invokeBlack([str(source_path), "--target-version", "py36"], exit_code=123)
 
     @patch("black.dump_to_file", dump_to_stderr)
     def test_fmtonoff(self) -> None:
 
     @patch("black.dump_to_file", dump_to_stderr)
     def test_fmtonoff(self) -> None:
@@ -1554,20 +1592,6 @@ class BlackTestCase(unittest.TestCase):
             await check("3.4", 204)
             await check("py3.4", 204)
 
             await check("3.4", 204)
             await check("py3.4", 204)
 
-    @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
-    @async_test
-    async def test_blackd_fast(self) -> None:
-        with open(os.devnull, "w") as dn, redirect_stderr(dn):
-            app = blackd.make_app()
-            async with TestClient(TestServer(app)) as client:
-                response = await client.post("/", data=b"ur'hello'")
-                self.assertEqual(response.status, 500)
-                self.assertIn("failed to parse source file", await response.text())
-                response = await client.post(
-                    "/", data=b"ur'hello'", headers={blackd.FAST_OR_SAFE_HEADER: "fast"}
-                )
-                self.assertEqual(response.status, 200)
-
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_line_length(self) -> None:
     @unittest.skipUnless(has_blackd_deps, "blackd's dependencies are not installed")
     @async_test
     async def test_blackd_line_length(self) -> None:
vim configuration

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