Add tests replicating the issue

Author: amercader

tests/test_gettext.py

@@ -91,9 +91,10 @@ def test_list_translations():
 
     with app.app_context():
         translations = b.list_translations()
-        assert len(translations) == 2
+        assert len(translations) == 3
         assert str(translations[0]) == 'de'
-        assert str(translations[1]) == 'de_DE'
+        assert str(translations[1]) == 'ja'
+        assert str(translations[2]) == 'de_DE'
 
 
 def test_list_translations_default_locale_exists():
@@ -102,8 +103,9 @@ def test_list_translations_default_locale_exists():
 
     with app.app_context():
         translations = b.list_translations()
-        assert len(translations) == 1
+        assert len(translations) == 2
         assert str(translations[0]) == 'de'
+        assert str(translations[1]) == 'ja'
 
 
 def test_no_formatting():
@@ -219,3 +221,58 @@ def test_cache(mocker):
         }
         assert babel.gettext("Yes") == "Ja"
     assert load_mock.call_count == 2
+
+
+def test_plurals():
+
+    app = flask.Flask(__name__)
+
+    def set_locale():
+        return flask.request.environ["LANG"]
+
+    babel.Babel(app, locale_selector=set_locale)
+
+    # Plural-Forms: nplurals=2; plural=(n != 1)
+    with app.test_request_context(environ_overrides={"LANG": "de_DE"}):
+
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "1 Apfel"
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "2 Äpfel"
+
+    # Plural-Forms: nplurals=1; plural=0;
+    with app.test_request_context(environ_overrides={"LANG": "ja"}):
+
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "リンゴ 1 個"
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "リンゴ 2 個"
+
+
+def test_plurals_different_domains():
+
+    app = flask.Flask(__name__)
+
+    app.config.update({
+        'BABEL_TRANSLATION_DIRECTORIES': ';'.join((
+            'translations',
+            'translations_different_domain',
+        )),
+        'BABEL_DOMAIN': ';'.join((
+            'messages',
+            'myapp',
+        )),
+    })
+
+    def set_locale():
+        return flask.request.environ["LANG"]
+
+    babel.Babel(app, locale_selector=set_locale)
+
+    # Plural-Forms: nplurals=2; plural=(n != 1)
+    with app.test_request_context(environ_overrides={"LANG": "de_DE"}):
+
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "1 Apfel"
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "2 Äpfel"
+
+    # Plural-Forms: nplurals=1; plural=0;
+    with app.test_request_context(environ_overrides={"LANG": "ja"}):
+
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 1) == "リンゴ 1 個"
+        assert ngettext("%(num)s Apple", "%(num)s Apples", 2) == "リンゴ 2 個"

tests/test_integration.py

@@ -39,10 +39,11 @@ def test_multiple_directories():
     with app.test_request_context():
         translations = b.list_translations()
 
-        assert(len(translations) == 3)
+        assert(len(translations) == 4)
         assert(str(translations[0]) == 'de')
-        assert(str(translations[1]) == 'de')
-        assert(str(translations[2]) == 'de_DE')
+        assert(str(translations[1]) == 'ja')
+        assert(str(translations[2]) == 'de')
+        assert(str(translations[3]) == 'de_DE')
 
         assert gettext(
             u'Hello %(name)s!',

tests/translations/ja/LC_MESSAGES/messages.mo

@@ -0,0 +1,35 @@
+# Japanese translations for PROJECT.
+# Copyright (C) 2010 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2010.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2010-05-30 12:56+0200\n"
+"PO-Revision-Date: 2024-06-12 14:34+0200\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: ja\n"
+"Language-Team: ja <LL@li.org>\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.14.0\n"
+
+#: tests.py:94
+#, python-format
+msgid "Hello %(name)s!"
+msgstr "こんにちは %(name)s!"
+
+#: tests.py:95 tests.py:96
+#, python-format
+msgid "%(num)s Apple"
+msgid_plural "%(num)s Apples"
+msgstr[0] "リンゴ %(num)s 個"
+
+#: tests.py:119
+msgid "Yes"
+msgstr "はい"
+