Wrap multiple context managers in parentheses when targeting Python 3.9+ (#3489)

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

diff --git a/tests/test_format.py b/tests/test_format.py
index 0816bbd36925d313f0ff37970f57b15fc09d47b8..adcbc02468d166f5803a694d78897f2f9ff1cc5f 100644 (file)
--- a/tests/test_format.py
+++ b/tests/test_format.py
@@ -1,3 +1,4 @@
+import re
 from dataclasses import replace
 from typing import Any, Iterator
 from unittest.mock import patch
@@ -58,6 +59,29 @@ def test_preview_minimum_python_310_format(filename: str) -> None:
     assert_format(source, expected, mode, minimum_version=(3, 10))
 
 
+def test_preview_context_managers_targeting_py38() -> None:
+    source, expected = read_data("preview_context_managers", "targeting_py38.py")
+    mode = black.Mode(preview=True, target_versions={black.TargetVersion.PY38})
+    assert_format(source, expected, mode, minimum_version=(3, 8))
+
+
+def test_preview_context_managers_targeting_py39() -> None:
+    source, expected = read_data("preview_context_managers", "targeting_py39.py")
+    mode = black.Mode(preview=True, target_versions={black.TargetVersion.PY39})
+    assert_format(source, expected, mode, minimum_version=(3, 9))
+
+
+@pytest.mark.parametrize(
+    "filename", all_data_cases("preview_context_managers/auto_detect")
+)
+def test_preview_context_managers_auto_detect(filename: str) -> None:
+    match = re.match(r"features_3_(\d+)", filename)
+    assert match is not None, "Unexpected filename format: %s" % filename
+    source, expected = read_data("preview_context_managers/auto_detect", filename)
+    mode = black.Mode(preview=True)
+    assert_format(source, expected, mode, minimum_version=(3, int(match.group(1))))
+
+
 # =============== #
 # Complex cases
 # ============= #