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Remove the trailing comma if there is only one argument to a call
[etc/vim.git] / tests / test_black.py
diff --git a/tests/test_black.py b/tests/test_black.py
index d9c0c5e6ed7cff5bea725080b8d4117abbb4c757..c11fca0a9019fcaf5fbfa474c1f370e476ef7f1a 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 from functools import partial
 from pathlib import Path
 #!/usr/bin/env python3
 from functools import partial
 from pathlib import Path
-from typing import List, Tuple
+from typing import Any, List, Tuple
 import unittest
 from unittest.mock import patch
 
 import unittest
 from unittest.mock import patch
 
@@ -46,6 +46,7 @@ class BlackTestCase(unittest.TestCase):
 
     def assertFormatEqual(self, expected: str, actual: str) -> None:
         if actual != expected:
 
     def assertFormatEqual(self, expected: str, actual: str) -> None:
         if actual != expected:
+            bdv: black.DebugVisitor[Any]
             black.out('Expected tree:', fg='green')
             try:
                 exp_node = black.lib2to3_parse(expected)
             black.out('Expected tree:', fg='green')
             try:
                 exp_node = black.lib2to3_parse(expected)
@@ -108,6 +109,14 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, line_length=ll)
 
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, line_length=ll)
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_fstring(self) -> None:
+        source, expected = read_data('fstring')
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, line_length=ll)
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_comments(self) -> None:
         source, expected = read_data('comments')
     @patch("black.dump_to_file", dump_to_stderr)
     def test_comments(self) -> None:
         source, expected = read_data('comments')
@@ -153,37 +162,37 @@ class BlackTestCase(unittest.TestCase):
         out_lines = []
         err_lines = []
 
         out_lines = []
         err_lines = []
 
-        def out(msg: str, **kwargs):
+        def out(msg: str, **kwargs: Any) -> None:
             out_lines.append(msg)
 
             out_lines.append(msg)
 
-        def err(msg: str, **kwargs):
+        def err(msg: str, **kwargs: Any) -> None:
             err_lines.append(msg)
 
         with patch("black.out", out), patch("black.err", err):
             err_lines.append(msg)
 
         with patch("black.out", out), patch("black.err", err):
-            report.done(Path('f1'), changed=True)
+            report.done(Path('f1'), changed=False)
             self.assertEqual(len(out_lines), 1)
             self.assertEqual(len(err_lines), 0)
             self.assertEqual(len(out_lines), 1)
             self.assertEqual(len(err_lines), 0)
-            self.assertEqual(out_lines[-1], 'reformatted f1')
-            self.assertEqual(unstyle(str(report)), '1 file reformatted.')
+            self.assertEqual(out_lines[-1], 'f1 already well formatted, good job.')
+            self.assertEqual(unstyle(str(report)), '1 file left unchanged.')
             self.assertEqual(report.return_code, 0)
             self.assertEqual(report.return_code, 0)
-            report.failed(Path('e1'), 'boom')
-            self.assertEqual(len(out_lines), 1)
-            self.assertEqual(len(err_lines), 1)
-            self.assertEqual(err_lines[-1], 'error: cannot format e1: boom')
+            report.done(Path('f2'), changed=True)
+            self.assertEqual(len(out_lines), 2)
+            self.assertEqual(len(err_lines), 0)
+            self.assertEqual(out_lines[-1], 'reformatted f2')
             self.assertEqual(
             self.assertEqual(
-                unstyle(str(report)), '1 file reformatted, 1 file failed to reformat.'
+                unstyle(str(report)), '1 file reformatted, 1 file left unchanged.'
             )
             self.assertEqual(report.return_code, 1)
             )
             self.assertEqual(report.return_code, 1)
-            report.done(Path('f2'), changed=False)
+            report.failed(Path('e1'), 'boom')
             self.assertEqual(len(out_lines), 2)
             self.assertEqual(len(err_lines), 1)
             self.assertEqual(len(out_lines), 2)
             self.assertEqual(len(err_lines), 1)
-            self.assertEqual(out_lines[-1], 'f2 already well formatted, good job.')
+            self.assertEqual(err_lines[-1], 'error: cannot format e1: boom')
             self.assertEqual(
                 unstyle(str(report)),
                 '1 file reformatted, 1 file left unchanged, '
                 '1 file failed to reformat.',
             )
             self.assertEqual(
                 unstyle(str(report)),
                 '1 file reformatted, 1 file left unchanged, '
                 '1 file failed to reformat.',
             )
-            self.assertEqual(report.return_code, 1)
+            self.assertEqual(report.return_code, 123)
             report.done(Path('f3'), changed=True)
             self.assertEqual(len(out_lines), 3)
             self.assertEqual(len(err_lines), 1)
             report.done(Path('f3'), changed=True)
             self.assertEqual(len(out_lines), 3)
             self.assertEqual(len(err_lines), 1)
@@ -193,7 +202,7 @@ class BlackTestCase(unittest.TestCase):
                 '2 files reformatted, 1 file left unchanged, '
                 '1 file failed to reformat.',
             )
                 '2 files reformatted, 1 file left unchanged, '
                 '1 file failed to reformat.',
             )
-            self.assertEqual(report.return_code, 1)
+            self.assertEqual(report.return_code, 123)
             report.failed(Path('e2'), 'boom')
             self.assertEqual(len(out_lines), 3)
             self.assertEqual(len(err_lines), 2)
             report.failed(Path('e2'), 'boom')
             self.assertEqual(len(out_lines), 3)
             self.assertEqual(len(err_lines), 2)
@@ -203,7 +212,7 @@ class BlackTestCase(unittest.TestCase):
                 '2 files reformatted, 1 file left unchanged, '
                 '2 files failed to reformat.',
             )
                 '2 files reformatted, 1 file left unchanged, '
                 '2 files failed to reformat.',
             )
-            self.assertEqual(report.return_code, 1)
+            self.assertEqual(report.return_code, 123)
             report.done(Path('f4'), changed=False)
             self.assertEqual(len(out_lines), 4)
             self.assertEqual(len(err_lines), 2)
             report.done(Path('f4'), changed=False)
             self.assertEqual(len(out_lines), 4)
             self.assertEqual(len(err_lines), 2)
@@ -213,7 +222,25 @@ class BlackTestCase(unittest.TestCase):
                 '2 files reformatted, 2 files left unchanged, '
                 '2 files failed to reformat.',
             )
                 '2 files reformatted, 2 files left unchanged, '
                 '2 files failed to reformat.',
             )
-            self.assertEqual(report.return_code, 1)
+            self.assertEqual(report.return_code, 123)
+
+    def test_is_python36(self) -> None:
+        node = black.lib2to3_parse("def f(*, arg): ...\n")
+        self.assertFalse(black.is_python36(node))
+        node = black.lib2to3_parse("def f(*, arg,): ...\n")
+        self.assertTrue(black.is_python36(node))
+        node = black.lib2to3_parse("def f(*, arg): f'string'\n")
+        self.assertTrue(black.is_python36(node))
+        source, expected = read_data('function')
+        node = black.lib2to3_parse(source)
+        self.assertTrue(black.is_python36(node))
+        node = black.lib2to3_parse(expected)
+        self.assertTrue(black.is_python36(node))
+        source, expected = read_data('expression')
+        node = black.lib2to3_parse(source)
+        self.assertFalse(black.is_python36(node))
+        node = black.lib2to3_parse(expected)
+        self.assertFalse(black.is_python36(node))
 
 
 if __name__ == '__main__':
 
 
 if __name__ == '__main__':
vim configuration

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