gh-126413: Add translation tests for getopt and optparse (GH-126698)

Lib/test/support/i18n_helper.py

@@ -0,0 +1,63 @@
+import re
+import subprocess
+import sys
+import unittest
+from pathlib import Path
+from test.support import REPO_ROOT, TEST_HOME_DIR, requires_subprocess
+from test.test_tools import skip_if_missing
+
+
+pygettext = Path(REPO_ROOT) / 'Tools' / 'i18n' / 'pygettext.py'
+
+msgid_pattern = re.compile(r'msgid(.*?)(?:msgid_plural|msgctxt|msgstr)',
+                           re.DOTALL)
+msgid_string_pattern = re.compile(r'"((?:\\"|[^"])*)"')
+
+
+def _generate_po_file(path, *, stdout_only=True):
+    res = subprocess.run([sys.executable, pygettext,
+                          '--no-location', '-o', '-', path],
+                         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                         text=True)
+    if stdout_only:
+        return res.stdout
+    return res
+
+
+def _extract_msgids(po):
+    msgids = []
+    for msgid in msgid_pattern.findall(po):
+        msgid_string = ''.join(msgid_string_pattern.findall(msgid))
+        msgid_string = msgid_string.replace(r'\"', '"')
+        if msgid_string:
+            msgids.append(msgid_string)
+    return sorted(msgids)
+
+
+def _get_snapshot_path(module_name):
+    return Path(TEST_HOME_DIR) / 'translationdata' / module_name / 'msgids.txt'
+
+
+@requires_subprocess()
+class TestTranslationsBase(unittest.TestCase):
+
+    def assertMsgidsEqual(self, module):
+        '''Assert that msgids extracted from a given module match a
+        snapshot.
+
+        '''
+        skip_if_missing('i18n')
+        res = _generate_po_file(module.__file__, stdout_only=False)
+        self.assertEqual(res.returncode, 0)
+        self.assertEqual(res.stderr, '')
+        msgids = _extract_msgids(res.stdout)
+        snapshot_path = _get_snapshot_path(module.__name__)
+        snapshot = snapshot_path.read_text().splitlines()
+        self.assertListEqual(msgids, snapshot)
+
+
+def update_translation_snapshots(module):
+    contents = _generate_po_file(module.__file__)
+    msgids = _extract_msgids(contents)
+    snapshot_path = _get_snapshot_path(module.__name__)
+    snapshot_path.write_text('\n'.join(msgids))

Lib/test/test_argparse.py

@@ -7,10 +7,8 @@ import io
 import operator
 import os
 import py_compile
-import re
 import shutil
 import stat
-import subprocess
 import sys
 import textwrap
 import tempfile
@@ -19,15 +17,11 @@ import argparse
 import warnings
 
 from enum import StrEnum
-from pathlib import Path
-from test.support import REPO_ROOT
-from test.support import TEST_HOME_DIR
 from test.support import captured_stderr
 from test.support import import_helper
 from test.support import os_helper
-from test.support import requires_subprocess
 from test.support import script_helper
-from test.test_tools import skip_if_missing
+from test.support.i18n_helper import TestTranslationsBase, update_translation_snapshots
 from unittest import mock
 
 
@@ -7056,50 +7050,10 @@ class TestProgName(TestCase):
 # Translation tests
 # =================
 
-pygettext = Path(REPO_ROOT) / 'Tools' / 'i18n' / 'pygettext.py'
+class TestTranslations(TestTranslationsBase):
-snapshot_path = Path(TEST_HOME_DIR) / 'translationdata' / 'argparse' / 'msgids.txt'
-
-msgid_pattern = re.compile(r'msgid(.*?)(?:msgid_plural|msgctxt|msgstr)', re.DOTALL)
-msgid_string_pattern = re.compile(r'"((?:\\"|[^"])*)"')
-
-
-@requires_subprocess()
-class TestTranslations(unittest.TestCase):
 
     def test_translations(self):
-        # Test messages extracted from the argparse module against a snapshot
+        self.assertMsgidsEqual(argparse)
-        skip_if_missing('i18n')
-        res = generate_po_file(stdout_only=False)
-        self.assertEqual(res.returncode, 0)
-        self.assertEqual(res.stderr, '')
-        msgids = extract_msgids(res.stdout)
-        snapshot = snapshot_path.read_text().splitlines()
-        self.assertListEqual(msgids, snapshot)
-
-
-def generate_po_file(*, stdout_only=True):
-    res = subprocess.run([sys.executable, pygettext,
-                          '--no-location', '-o', '-', argparse.__file__],
-                         stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
-    if stdout_only:
-        return res.stdout
-    return res
-
-
-def extract_msgids(po):
-    msgids = []
-    for msgid in msgid_pattern.findall(po):
-        msgid_string = ''.join(msgid_string_pattern.findall(msgid))
-        msgid_string = msgid_string.replace(r'\"', '"')
-        if msgid_string:
-            msgids.append(msgid_string)
-    return sorted(msgids)
-
-
-def update_translation_snapshots():
-    contents = generate_po_file()
-    msgids = extract_msgids(contents)
-    snapshot_path.write_text('\n'.join(msgids))
 
 
 def tearDownModule():
@@ -7111,6 +7065,6 @@ def tearDownModule():
 if __name__ == '__main__':
     # To regenerate translation snapshots
     if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
-        update_translation_snapshots()
+        update_translation_snapshots(argparse)
         sys.exit(0)
     unittest.main()

Lib/test/test_getopt.py

@@ -1,11 +1,12 @@
 # test_getopt.py
 # David Goodger <dgoodger@bigfoot.com> 2000-08-19
 
-from test.support.os_helper import EnvironmentVarGuard
 import doctest
-import unittest
-
 import getopt
+import sys
+import unittest
+from test.support.i18n_helper import TestTranslationsBase, update_translation_snapshots
+from test.support.os_helper import EnvironmentVarGuard
 
 sentinel = object()
 
@@ -224,10 +225,20 @@ def test_libref_examples():
     ['a1', 'a2']
     """
 
+
+class TestTranslations(TestTranslationsBase):
+    def test_translations(self):
+        self.assertMsgidsEqual(getopt)
+
+
 def load_tests(loader, tests, pattern):
     tests.addTest(doctest.DocTestSuite())
     return tests
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
+    # To regenerate translation snapshots
+    if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
+        update_translation_snapshots(getopt)
+        sys.exit(0)
     unittest.main()

Lib/test/test_optparse.py

@@ -15,7 +15,7 @@ import unittest
 from io import StringIO
 from test import support
 from test.support import os_helper
-
+from test.support.i18n_helper import TestTranslationsBase, update_translation_snapshots
 
 import optparse
 from optparse import make_option, Option, \
@@ -1656,5 +1656,14 @@ class MiscTestCase(unittest.TestCase):
         support.check__all__(self, optparse, not_exported=not_exported)
 
 
+class TestTranslations(TestTranslationsBase):
+    def test_translations(self):
+        self.assertMsgidsEqual(optparse)
+
+
 if __name__ == '__main__':
+    # To regenerate translation snapshots
+    if len(sys.argv) > 1 and sys.argv[1] == '--snapshot-update':
+        update_translation_snapshots(optparse)
+        sys.exit(0)
     unittest.main()

Lib/test/translationdata/getopt/msgids.txt

@@ -0,0 +1,6 @@
+option -%s not recognized
+option -%s requires argument
+option --%s must not have an argument
+option --%s not a unique prefix
+option --%s not recognized
+option --%s requires argument

Lib/test/translationdata/optparse/msgids.txt

@@ -0,0 +1,14 @@
+%prog [options]
+%s option does not take a value
+Options
+Usage
+Usage: %s\n
+ambiguous option: %s (%s?)
+complex
+floating-point
+integer
+no such option: %s
+option %s: invalid %s value: %r
+option %s: invalid choice: %r (choose from %s)
+show program's version number and exit
+show this help message and exit

Makefile.pre.in

@@ -2567,6 +2567,8 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/tracedmodules \
 		test/translationdata \
 		test/translationdata/argparse \
+		test/translationdata/getopt \
+		test/translationdata/optparse \
 		test/typinganndata \
 		test/wheeldata \
 		test/xmltestdata \