gh-114099: Add test exclusions to support running the test suite on iOS (#114889)

Add test annotations required to run the test suite on iOS (PEP 730).

The majority of the change involve annotating tests that use subprocess,
but are skipped on Emscripten/WASI for other reasons, and including
iOS/tvOS/watchOS under the same umbrella as macOS/darwin checks.

`is_apple` and `is_apple_mobile` test helpers have been added to
identify *any* Apple platform, and "any Apple platform except macOS",
respectively.

1 files changed, 7 insertions, 7 deletions

diff --git a/Lib/test/test_unicode_file_functions.py b/Lib/test/test_unicode_file_functions.py
index 47619c8..25c16e3 100644
--- a/Lib/test/test_unicode_file_functions.py
+++ b/Lib/test/test_unicode_file_functions.py
@@ -5,7 +5,7 @@ import sys
 import unittest
 import warnings
 from unicodedata import normalize
-from test.support import os_helper
+from test.support import is_apple, os_helper
 from test import support
 
 
@@ -23,13 +23,13 @@ filenames = [
     '10_\u1fee\u1ffd',
     ]
 
-# Mac OS X decomposes Unicode names, using Normal Form D.
+# Apple platforms decompose Unicode names, using Normal Form D.
 # http://developer.apple.com/mac/library/qa/qa2001/qa1173.html
 # "However, most volume formats do not follow the exact specification for
 # these normal forms.  For example, HFS Plus uses a variant of Normal Form D
 # in which U+2000 through U+2FFF, U+F900 through U+FAFF, and U+2F800 through
 # U+2FAFF are not decomposed."
-if sys.platform != 'darwin':
+if not is_apple:
     filenames.extend([
         # Specific code points: NFC(fn), NFD(fn), NFKC(fn) and NFKD(fn) all different
         '11_\u0385\u03d3\u03d4',
@@ -119,11 +119,11 @@ class UnicodeFileTests(unittest.TestCase):
             os.stat(name)
             self._apply_failure(os.listdir, name, self._listdir_failure)
 
-    # Skip the test on darwin, because darwin does normalize the filename to
+    # Skip the test on Apple platforms, because they don't normalize the filename to
     # NFD (a variant of Unicode NFD form). Normalize the filename to NFC, NFKC,
     # NFKD in Python is useless, because darwin will normalize it later and so
     # open(), os.stat(), etc. don't raise any exception.
-    @unittest.skipIf(sys.platform == 'darwin', 'irrelevant test on Mac OS X')
+    @unittest.skipIf(is_apple, 'irrelevant test on Apple platforms')
     @unittest.skipIf(
         support.is_emscripten or support.is_wasi,
         "test fails on Emscripten/WASI when host platform is macOS."
@@ -142,10 +142,10 @@ class UnicodeFileTests(unittest.TestCase):
             self._apply_failure(os.remove, name)
             self._apply_failure(os.listdir, name)
 
-    # Skip the test on darwin, because darwin uses a normalization different
+    # Skip the test on Apple platforms, because they use a normalization different
     # than Python NFD normalization: filenames are different even if we use
     # Python NFD normalization.
-    @unittest.skipIf(sys.platform == 'darwin', 'irrelevant test on Mac OS X')
+    @unittest.skipIf(is_apple, 'irrelevant test on Apple platforms')
     def test_listdir(self):
         sf0 = set(self.files)
         with warnings.catch_warnings():