test(locale): DATE_FORMAT results in expected str

adding a few init files here to get test discovery to work with the
new locale directories

tests/pytest/locale/test_formats.py

@@ -0,0 +1,36 @@
+from datetime import datetime
+
+import pytest
+
+from django.utils.formats import date_format
+
+from benefits.locale.en.formats import DATE_FORMAT as DATE_FORMAT_EN
+from benefits.locale.es.formats import DATE_FORMAT as DATE_FORMAT_ES
+
+
+@pytest.fixture
+def date_december():
+    return datetime(2024, 12, 1)
+
+
+@pytest.fixture
+def date_march():
+    return datetime(2024, 3, 1)
+
+
+def test_en_DATE_FORMAT_december(date_december):
+    assert date_format(date_december, DATE_FORMAT_EN) == "December 1, 2024"
+
+
+def test_en_DATE_FORMAT_march(date_march):
+    assert date_format(date_march, DATE_FORMAT_EN) == "March 1, 2024"
+
+
+def test_es_DATE_FORMAT_december(settings, date_december):
+    settings.LANGUAGE_CODE = "es"
+    assert date_format(date_december, DATE_FORMAT_ES) == "1 de diciembre de 2024"
+
+
+def test_es_DATE_FORMAT_march(settings, date_march):
+    settings.LANGUAGE_CODE = "es"
+    assert date_format(date_march, DATE_FORMAT_ES) == "1 de marzo de 2024"