Add latest_prerelease Docker Hub tag for following the latest alpha release (#3465)

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

diff --git a/tests/test_format.py b/tests/test_format.py
index 7a099fb9f3343350cfaa33773f84984cf783a0b5..01cd61eef63dee3272e156d5e5700ad9f4152eda 100644 (file)
--- a/tests/test_format.py
+++ b/tests/test_format.py
@@ -8,10 +8,10 @@ import black
 from tests.util import (
     DEFAULT_MODE,
     PY36_VERSIONS,
+    all_data_cases,
     assert_format,
     dump_to_stderr,
     read_data,
-    all_data_cases,
 )
 
 
@@ -36,7 +36,12 @@ def test_simple_format(filename: str) -> None:
 
 @pytest.mark.parametrize("filename", all_data_cases("preview"))
 def test_preview_format(filename: str) -> None:
-    check_file("preview", filename, black.Mode(preview=True))
+    magic_trailing_comma = filename != "skip_magic_trailing_comma"
+    check_file(
+        "preview",
+        filename,
+        black.Mode(preview=True, magic_trailing_comma=magic_trailing_comma),
+    )
 
 
 @pytest.mark.parametrize("filename", all_data_cases("preview_39"))