Brevity: only use the variables required to convey the intended expressions

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

diff --git a/tests/test_black.py b/tests/test_black.py
index a688c8780efe682530d11ccf55c9995eea8608a8..a2efef8242287b4194ce5deed1eab650c113623a 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -395,6 +395,31 @@ class BlackTestCase(BlackBaseTestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, mode)
 
+    def test_skip_magic_trailing_comma(self) -> None:
+        source, _ = read_data("expression.py")
+        expected, _ = read_data("expression_skip_magic_trailing_comma.diff")
+        tmp_file = Path(black.dump_to_file(source))
+        diff_header = re.compile(
+            rf"{re.escape(str(tmp_file))}\t\d\d\d\d-\d\d-\d\d "
+            r"\d\d:\d\d:\d\d\.\d\d\d\d\d\d \+\d\d\d\d"
+        )
+        try:
+            result = BlackRunner().invoke(black.main, ["-C", "--diff", str(tmp_file)])
+            self.assertEqual(result.exit_code, 0)
+        finally:
+            os.unlink(tmp_file)
+        actual = result.output
+        actual = diff_header.sub(DETERMINISTIC_HEADER, actual)
+        actual = actual.rstrip() + "\n"  # the diff output has a trailing space
+        if expected != actual:
+            dump = black.dump_to_file(actual)
+            msg = (
+                "Expected diff isn't equal to the actual. If you made changes to"
+                " expression.py and this is an anticipated difference, overwrite"
+                f" tests/data/expression_skip_magic_trailing_comma.diff with {dump}"
+            )
+            self.assertEqual(expected, actual, msg)
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_python2_print_function(self) -> None:
         source, expected = read_data("python2_print_function")
@@ -978,7 +1003,7 @@ class BlackTestCase(BlackBaseTestCase):
                 fobj.write("print('hello')")
             self.invokeBlack([str(src)])
             cache = black.read_cache(mode)
-            self.assertIn(src, cache)
+            self.assertIn(str(src), cache)
 
     def test_cache_single_file_already_cached(self) -> None:
         mode = DEFAULT_MODE
@@ -1010,8 +1035,8 @@ class BlackTestCase(BlackBaseTestCase):
             with two.open("r") as fobj:
                 self.assertEqual(fobj.read(), 'print("hello")\n')
             cache = black.read_cache(mode)
-            self.assertIn(one, cache)
-            self.assertIn(two, cache)
+            self.assertIn(str(one), cache)
+            self.assertIn(str(two), cache)
 
     def test_no_cache_when_writeback_diff(self) -> None:
         mode = DEFAULT_MODE
@@ -1091,8 +1116,8 @@ class BlackTestCase(BlackBaseTestCase):
             src.touch()
             black.write_cache({}, [src], mode)
             cache = black.read_cache(mode)
-            self.assertIn(src, cache)
-            self.assertEqual(cache[src], black.get_cache_info(src))
+            self.assertIn(str(src), cache)
+            self.assertEqual(cache[str(src)], black.get_cache_info(src))
 
     def test_filter_cached(self) -> None:
         with TemporaryDirectory() as workspace:
@@ -1103,7 +1128,10 @@ class BlackTestCase(BlackBaseTestCase):
             uncached.touch()
             cached.touch()
             cached_but_changed.touch()
-            cache = {cached: black.get_cache_info(cached), cached_but_changed: (0.0, 0)}
+            cache = {
+                str(cached): black.get_cache_info(cached),
+                str(cached_but_changed): (0.0, 0),
+            }
             todo, done = black.filter_cached(
                 cache, {uncached, cached, cached_but_changed}
             )
@@ -1131,8 +1159,8 @@ class BlackTestCase(BlackBaseTestCase):
                 fobj.write('print("hello")\n')
             self.invokeBlack([str(workspace)], exit_code=123)
             cache = black.read_cache(mode)
-            self.assertNotIn(failing, cache)
-            self.assertIn(clean, cache)
+            self.assertNotIn(str(failing), cache)
+            self.assertIn(str(clean), cache)
 
     def test_write_cache_write_fail(self) -> None:
         mode = DEFAULT_MODE
@@ -1185,9 +1213,9 @@ class BlackTestCase(BlackBaseTestCase):
             path.touch()
             black.write_cache({}, [path], mode)
             one = black.read_cache(mode)
-            self.assertIn(path, one)
+            self.assertIn(str(path), one)
             two = black.read_cache(short_mode)
-            self.assertNotIn(path, two)
+            self.assertNotIn(str(path), two)
 
     def test_single_file_force_pyi(self) -> None:
         pyi_mode = replace(DEFAULT_MODE, is_pyi=True)
@@ -1201,9 +1229,9 @@ class BlackTestCase(BlackBaseTestCase):
                 actual = fh.read()
             # verify cache with --pyi is separate
             pyi_cache = black.read_cache(pyi_mode)
-            self.assertIn(path, pyi_cache)
+            self.assertIn(str(path), pyi_cache)
             normal_cache = black.read_cache(DEFAULT_MODE)
-            self.assertNotIn(path, normal_cache)
+            self.assertNotIn(str(path), normal_cache)
         self.assertFormatEqual(expected, actual)
         black.assert_equivalent(contents, actual)
         black.assert_stable(contents, actual, pyi_mode)
@@ -1230,8 +1258,8 @@ class BlackTestCase(BlackBaseTestCase):
             pyi_cache = black.read_cache(pyi_mode)
             normal_cache = black.read_cache(reg_mode)
             for path in paths:
-                self.assertIn(path, pyi_cache)
-                self.assertNotIn(path, normal_cache)
+                self.assertIn(str(path), pyi_cache)
+                self.assertNotIn(str(path), normal_cache)
 
     def test_pipe_force_pyi(self) -> None:
         source, expected = read_data("force_pyi")
@@ -1255,9 +1283,9 @@ class BlackTestCase(BlackBaseTestCase):
                 actual = fh.read()
             # verify cache with --target-version is separate
             py36_cache = black.read_cache(py36_mode)
-            self.assertIn(path, py36_cache)
+            self.assertIn(str(path), py36_cache)
             normal_cache = black.read_cache(reg_mode)
-            self.assertNotIn(path, normal_cache)
+            self.assertNotIn(str(path), normal_cache)
         self.assertEqual(actual, expected)
 
     @event_loop()
@@ -1282,8 +1310,8 @@ class BlackTestCase(BlackBaseTestCase):
             pyi_cache = black.read_cache(py36_mode)
             normal_cache = black.read_cache(reg_mode)
             for path in paths:
-                self.assertIn(path, pyi_cache)
-                self.assertNotIn(path, normal_cache)
+                self.assertIn(str(path), pyi_cache)
+                self.assertNotIn(str(path), normal_cache)
 
     def test_pipe_force_py36(self) -> None:
         source, expected = read_data("force_py36")
@@ -1765,6 +1793,11 @@ class BlackTestCase(BlackBaseTestCase):
         finally:
             os.chdir(str(old_cwd))
 
+    def test_newline_comment_interaction(self) -> None:
+        source = "class A:\\\r\n# type: ignore\n pass\n"
+        output = black.format_str(source, mode=DEFAULT_MODE)
+        black.assert_stable(source, output, mode=DEFAULT_MODE)
+
 
 with open(black.__file__, "r", encoding="utf-8") as _bf:
     black_source_lines = _bf.readlines()