feat(#248): bootstrap django i18n from shared locale contract

partyhub/tests_i18n_bootstrap.py

@@ -0,0 +1,28 @@
+from django.conf import settings
+from django.test import TestCase
+
+from partyhub.i18n_bootstrap import django_languages, locale_config, shared_i18n_catalog
+
+
+class I18nBootstrapTests(TestCase):
+    def test_shared_catalog_bootstraps_default_and_supported_locales(self):
+        default_locale, supported_locales = locale_config()
+
+        self.assertEqual(default_locale, "en")
+        self.assertEqual(supported_locales, ("en", "da"))
+
+    def test_django_language_settings_bootstrap_from_shared_i18n_catalog(self):
+        default_locale, supported_locales = locale_config()
+
+        self.assertEqual(settings.LANGUAGE_CODE, default_locale)
+        self.assertEqual(tuple(code for code, _ in settings.LANGUAGES), supported_locales)
+        self.assertEqual(settings.LANGUAGES, django_languages())
+
+    def test_locale_contract_in_catalog_matches_django_language_codes(self):
+        catalog_locales = shared_i18n_catalog()["locales"]
+
+        self.assertEqual(settings.LANGUAGE_CODE, catalog_locales["default"])
+        self.assertEqual(
+            [code for code, _ in settings.LANGUAGES],
+            catalog_locales["supported"],
+        )