[test] Lint test/Misc/verify-swift-feature-testing.test-sh

It is not automatically linted because of its extension.

test/Misc/verify-swift-feature-testing.test-sh

@@ -11,110 +11,119 @@ import sys
 # Tests that check for the behaviour of  experimental/upcoming features, so
 # they cannot automatically be checked.
 EXCEPTIONAL_FILES = [
-  pathlib.Path("test/Frontend/experimental-features-no-asserts.swift"),
-  pathlib.Path("test/Frontend/upcoming_feature.swift"),
+    pathlib.Path("test/Frontend/experimental-features-no-asserts.swift"),
+    pathlib.Path("test/Frontend/upcoming_feature.swift"),
 ]
 
-FEATURE_USAGE_RE = re.compile(r"-enable-(?:experimental|upcoming)-feature (?:-Xfrontend )?([A-Za-z0-9]*)")
+FEATURE_USAGE_RE = re.compile(
+    r"-enable-(?:experimental|upcoming)-feature (?:-Xfrontend )?([A-Za-z0-9]*)"
+)
 
 
 def find_test_files_with_features_usage(swift_src_root):
-  # Look for every test file in the test directories with `RUN` lines that
-  # mention `-enable-experimental-feature` or `-enable-upcoming-feature`.
-  # Be careful of not using REQUIRES or RUN with a colon after them or Lit will
-  # pick them up.
-  output = subprocess.check_output([
-    "grep",
-    "--extended-regexp",
-    "--recursive",
-    "-e",
-    "RUN[:].*-enable-(experimental|upcoming)-feature",
-    "--files-with-matches",
-    str(swift_src_root / "test"),
-    str(swift_src_root / "validation-test"),
-  ], text=True)
-  return output.splitlines()
+    # Look for every test file in the test directories with `RUN` lines that
+    # mention `-enable-experimental-feature` or `-enable-upcoming-feature`.
+    # Be careful of not using REQUIRES or RUN with a colon after them or Lit will
+    # pick them up.
+    output = subprocess.check_output([
+        "grep",
+        "--extended-regexp",
+        "--recursive",
+        "-e",
+        "RUN[:].*-enable-(experimental|upcoming)-feature",
+        "--files-with-matches",
+        str(swift_src_root / "test"),
+        str(swift_src_root / "validation-test"),
+    ], text=True)
+    return output.splitlines()
 
 
 def find_run_lines(test_file):
-  output = subprocess.check_output([
-    "grep",
-    "--extended-regexp",
-    "--no-filename",
-    "-e",
-    "RUN[:]",
-    str(test_file),
-  ], text=True)
-  return output.splitlines()
+    output = subprocess.check_output([
+        "grep",
+        "--extended-regexp",
+        "--no-filename",
+        "-e",
+        "RUN[:]",
+        str(test_file),
+    ], text=True)
+    return output.splitlines()
 
 
 def check_existing_requires(test_file, feature):
-  returncode = subprocess.call([
-    "grep",
-    "--extended-regexp",
-    "--quiet",
-    "-e",
-    "REQUIRES[:].*swift_feature_" + feature,
-    str(test_file),
-  ])
-  return returncode != 0
+    returncode = subprocess.call([
+        "grep",
+        "--extended-regexp",
+        "--quiet",
+        "-e",
+        "REQUIRES[:].*swift_feature_" + feature,
+        str(test_file),
+    ])
+    return returncode != 0
 
 
 def check_existing_error_message_checks(test_file, feature):
-  returncode = subprocess.call([
-    "grep",
-    "--extended-regexp",
-    "--quiet",
-    "-e",
-    "requires '-enable-(experimental|upcoming)-feature " + feature + "'",
-    str(test_file),
-  ])
-  return returncode != 0
+    returncode = subprocess.call([
+        "grep",
+        "--extended-regexp",
+        "--quiet",
+        "-e",
+        "requires '-enable-(experimental|upcoming)-feature " + feature + "'",
+        str(test_file),
+    ])
+    return returncode != 0
 
 
 def check_test_file_feature_usage(test_file):
-  run_lines = find_run_lines(test_file)
-  features = set(
-    feature
-    for line in run_lines
-    for feature in FEATURE_USAGE_RE.findall(line)
-  )
-  num_failures = 0
-  for feature in features:
-    # No warning if the necessary `REQUIRES` is already there
-    if not check_existing_requires(test_file, feature):
-      continue
+    run_lines = find_run_lines(test_file)
+    features = set(
+        feature
+        for line in run_lines
+        for feature in FEATURE_USAGE_RE.findall(line)
+    )
+    num_failures = 0
+    for feature in features:
+        # No warning if the necessary `REQUIRES` is already there
+        if not check_existing_requires(test_file, feature):
+            continue
 
-    # Some tests check for the errors themselves, so we can skip them as well
-    if not check_existing_error_message_checks(test_file, feature):
-      continue
+        # Some tests check for the errors themselves, so we can skip them as well
+        if not check_existing_error_message_checks(test_file, feature):
+            continue
 
-    # For everything else, print a warning and for an invalid exit code
-    print("error: {}: Missing '{}: swift_feature_{}'".format(str(test_file), "REQUIRES", feature))
-    num_failures += 1
-  return num_failures == 0
+        # For everything else, print a warning and add to the invalid exit code
+        print(
+            "error: {}: Missing '{}: swift_feature_{}'".format(
+                str(test_file),
+                "REQUIRES",
+                feature
+            )
+        )
+        num_failures += 1
+    return num_failures == 0
 
 
 def main():
-  if len(sys.argv) < 2:
-      print('Invalid number of arguments.')
-      sys.exit(1)
+    if len(sys.argv) < 2:
+        print('Invalid number of arguments.')
+        sys.exit(1)
 
-  swift_src_root = pathlib.Path(sys.argv[1])
+    swift_src_root = pathlib.Path(sys.argv[1])
 
-  num_failures = 0
-  test_files_with_features_usage = find_test_files_with_features_usage(swift_src_root)
-  for test_file in test_files_with_features_usage:
-    test_file = pathlib.Path(test_file)
-    # First lets check this is not one of the exceptional files
-    if test_file.relative_to(swift_src_root) in EXCEPTIONAL_FILES:
-      continue
+    num_failures = 0
+    test_files_with_features_usage = find_test_files_with_features_usage(swift_src_root)
+    for test_file in test_files_with_features_usage:
+        test_file = pathlib.Path(test_file)
+        # First lets check this is not one of the exceptional files
+        if test_file.relative_to(swift_src_root) in EXCEPTIONAL_FILES:
+            continue
 
-    if not check_test_file_feature_usage(test_file):
-      num_failures += 1
+        if not check_test_file_feature_usage(test_file):
+            num_failures += 1
+
+    if num_failures > 0:
+        sys.exit(1)
 
-  if num_failures > 0:
-    sys.exit(1)
 
 if __name__ == '__main__':
-  main()
+    main()