Test Django-related functions accept string defaults (#380)

* Test that django parser functions accept string defaults

* Update changelog

Author: sloria

CHANGELOG.md

@@ -25,6 +25,13 @@ release_date = env.date("RELEASE", "2025-01-07")
 numbers = env.list("NUMBERS", "1,2,42", subcast=float)
 ```
 
+The exceptions to this rule are the Django-related functions, which
+accept string defaults.
+
+```python
+DATABASE_URL = env.dj_db_url("DATABASE_URL", default="postgresql://localhost:5432/mydb")
+```
+
 This fixes [#297](https://github.com/sloria/environs/issues/297)
 and [#270](https://github.com/sloria/environs/issues/270).
 

tests/test_environs.py

@@ -748,6 +748,11 @@ def dump_with_nested_prefixed(env, fail=False):
 class TestDjango:
     def test_dj_db_url(self, env: environs.Env, set_env):
         db_url = "postgresql://localhost:5432/mydb"
+
+        # Default is expected to be unparsed
+        res = env.dj_db_url("DATABASE_URL", default=db_url)
+        assert res == dj_database_url.parse(db_url)
+
         set_env({"DATABASE_URL": db_url})
         res = env.dj_db_url("DATABASE_URL")
         assert res == dj_database_url.parse(db_url)
@@ -760,12 +765,22 @@ def test_dj_db_url_passes_kwargs(self, env: environs.Env, set_env):
 
     def test_dj_email_url(self, env: environs.Env, set_env):
         email_url = "smtp://[email protected]:[email protected]:465/?ssl=True"
+
+        # Default is expected to be unparsed
+        res = env.dj_email_url("EMAIL_URL", default=email_url)
+        assert res == dj_email_url.parse(email_url)
+
         set_env({"EMAIL_URL": email_url})
         res = env.dj_email_url("EMAIL_URL")
         assert res == dj_email_url.parse(email_url)
 
     def test_dj_cache_url(self, env: environs.Env, set_env):
         cache_url = "redis://redis:6379/0"
+
+        # Default is expected to be unparsed
+        res = env.dj_cache_url("CACHE_URL", default=cache_url)
+        assert res == django_cache_url.parse(cache_url)
+
         set_env({"CACHE_URL": cache_url})
         res = env.dj_cache_url("CACHE_URL")
         assert res == django_cache_url.parse(cache_url)