gh-130197: Test pygettext's --version CLI option (#133022)

Author: StanFromIreland

Lib/test/test_tools/test_i18n.py

@@ -427,6 +427,11 @@ def test_help_text(self):
         self.assertEqual(res.out, b'')
         self.assertIn(b'pygettext -- Python equivalent of xgettext(1)', res.err)
 
+    def test_version_text(self):
+        """Test that the version text is displayed."""
+        res = assert_python_ok(self.script, '--version')
+        self.assertIn(b'pygettext.py (xgettext for Python) 1.5', res.out)
+
     def test_error_messages(self):
         """Test that pygettext outputs error messages to stderr."""
         stderr = self.get_stderr(dedent('''\