Enforce a blank line after a nested class in stubs (#3564)

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

diff --git a/tests/test_format.py b/tests/test_format.py
index 7a099fb9f3343350cfaa33773f84984cf783a0b5..3a6cbc9e2e936a144b2dc0b478eebffb1ec2a51f 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
@@ -8,10 +9,10 @@ import black
 from tests.util import (
     DEFAULT_MODE,
     PY36_VERSIONS,
+    all_data_cases,
     assert_format,
     dump_to_stderr,
     read_data,
-    all_data_cases,
 )
 
 
@@ -31,7 +32,10 @@ def check_file(
 @pytest.mark.filterwarnings("ignore:invalid escape sequence.*:DeprecationWarning")
 @pytest.mark.parametrize("filename", all_data_cases("simple_cases"))
 def test_simple_format(filename: str) -> None:
-    check_file("simple_cases", filename, DEFAULT_MODE)
+    magic_trailing_comma = filename != "skip_magic_trailing_comma"
+    check_file(
+        "simple_cases", filename, black.Mode(magic_trailing_comma=magic_trailing_comma)
+    )
 
 
 @pytest.mark.parametrize("filename", all_data_cases("preview"))
@@ -39,18 +43,27 @@ def test_preview_format(filename: str) -> None:
     check_file("preview", filename, black.Mode(preview=True))
 
 
-@pytest.mark.parametrize("filename", all_data_cases("preview_39"))
-def test_preview_minimum_python_39_format(filename: str) -> None:
-    source, expected = read_data("preview_39", filename)
-    mode = black.Mode(preview=True)
+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_310"))
-def test_preview_minimum_python_310_format(filename: str) -> None:
-    source, expected = read_data("preview_310", filename)
+@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, 10))
+    assert_format(source, expected, mode, minimum_version=(3, int(match.group(1))))
 
 
 # =============== #
@@ -141,6 +154,13 @@ def test_docstring_no_string_normalization() -> None:
     assert_format(source, expected, mode)
 
 
+def test_docstring_line_length_6() -> None:
+    """Like test_docstring but with line length set to 6."""
+    source, expected = read_data("miscellaneous", "linelength6")
+    mode = black.Mode(line_length=6)
+    assert_format(source, expected, mode)
+
+
 def test_preview_docstring_no_string_normalization() -> None:
     """
     Like test_docstring but with string normalization off *and* the preview style
@@ -166,6 +186,12 @@ def test_stub() -> None:
     assert_format(source, expected, mode)
 
 
+def test_nested_class_stub() -> None:
+    mode = replace(DEFAULT_MODE, is_pyi=True, preview=True)
+    source, expected = read_data("miscellaneous", "nested_class_stub.pyi")
+    assert_format(source, expected, mode)
+
+
 def test_power_op_newline() -> None:
     # requires line_length=0
     source, expected = read_data("miscellaneous", "power_op_newline")