Refactor `reformat_one` and `schedule_formatting` to decrease state

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

diff --git a/tests/test_black.py b/tests/test_black.py
index a64033cbc66fe7b6b45dfc345f4a18ec4f37f225..ba834c5cac8fa6d15ebca2a4e6be9c13ee3374fd 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import asyncio
+from concurrent.futures import ThreadPoolExecutor
 from contextlib import contextmanager
 from functools import partial
 from io import StringIO
@@ -105,7 +106,7 @@ class BlackTestCase(unittest.TestCase):
         self.assertFormatEqual(expected, actual)
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, line_length=ll)
-        self.assertIs(ff(THIS_FILE), black.Changed.NO)
+        self.assertFalse(ff(THIS_FILE))
 
     @patch("black.dump_to_file", dump_to_stderr)
     def test_black(self) -> None:
@@ -114,7 +115,7 @@ class BlackTestCase(unittest.TestCase):
         self.assertFormatEqual(expected, actual)
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, line_length=ll)
-        self.assertIs(ff(THIS_DIR / ".." / "black.py"), black.Changed.NO)
+        self.assertFalse(ff(THIS_DIR / ".." / "black.py"))
 
     def test_piping(self) -> None:
         source, expected = read_data("../black")
@@ -157,7 +158,7 @@ class BlackTestCase(unittest.TestCase):
         self.assertFormatEqual(expected, actual)
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, line_length=ll)
-        self.assertIs(ff(THIS_DIR / ".." / "setup.py"), black.Changed.NO)
+        self.assertFalse(ff(THIS_DIR / ".." / "setup.py"))
 
     @patch("black.dump_to_file", dump_to_stderr)
     def test_function(self) -> None:
@@ -507,7 +508,9 @@ class BlackTestCase(unittest.TestCase):
 
     @event_loop(close=False)
     def test_cache_multiple_files(self) -> None:
-        with cache_dir() as workspace:
+        with cache_dir() as workspace, patch(
+            "black.ProcessPoolExecutor", new=ThreadPoolExecutor
+        ):
             one = (workspace / "one.py").resolve()
             with one.open("w") as fobj:
                 fobj.write("print('hello')")
@@ -577,7 +580,9 @@ class BlackTestCase(unittest.TestCase):
 
     @event_loop(close=False)
     def test_failed_formatting_does_not_get_cached(self) -> None:
-        with cache_dir() as workspace:
+        with cache_dir() as workspace, patch(
+            "black.ProcessPoolExecutor", new=ThreadPoolExecutor
+        ):
             failing = (workspace / "failing.py").resolve()
             with failing.open("w") as fobj:
                 fobj.write("not actually python")
@@ -590,11 +595,29 @@ class BlackTestCase(unittest.TestCase):
             self.assertNotIn(failing, cache)
             self.assertIn(clean, cache)
 
-    def test_write_cache_write_fail(self):
+    def test_write_cache_write_fail(self) -> None:
         with cache_dir(), patch.object(Path, "open") as mock:
             mock.side_effect = OSError
             black.write_cache({}, [])
 
+    def test_check_diff_use_together(self) -> None:
+        with cache_dir():
+            # Files which will be reformatted.
+            src1 = (THIS_DIR / "string_quotes.py").resolve()
+            result = CliRunner().invoke(black.main, [str(src1), "--diff", "--check"])
+            self.assertEqual(result.exit_code, 1)
+
+            # Files which will not be reformatted.
+            src2 = (THIS_DIR / "composition.py").resolve()
+            result = CliRunner().invoke(black.main, [str(src2), "--diff", "--check"])
+            self.assertEqual(result.exit_code, 0)
+
+            # Multi file command.
+            result = CliRunner().invoke(
+                black.main, [str(src1), str(src2), "--diff", "--check"]
+            )
+            self.assertEqual(result.exit_code, 1)
+
 
 if __name__ == "__main__":
     unittest.main()