Added an endpoint that returns all letter jobs, ordered by created_at desc.

tests/app/letters/test_send_letter_jobs.py

@@ -1,8 +1,8 @@
 import uuid
 
-from flask import current_app
 from flask import json
 
+from app.schemas import job_schema
 from tests import create_authorization_header
 
 
@@ -40,3 +40,15 @@ def test_send_letter_jobs_throws_validation_error(client, mocker):
     assert response.status_code == 400
 
     assert not mock_celery.called
+
+
+def test_send_letter_jobs_throws_validation_error(client, sample_letter_job):
+    auth_header = create_authorization_header()
+    response = client.get(
+        path='/letter-jobs',
+        headers=[('Content-Type', 'application/json'), auth_header])
+
+    assert response.status_code == 200
+    json_resp = json.loads(response.get_data(as_text=True))
+    assert len(json_resp['data']) == 0
+    assert job_schema.dumps(sample_letter_job) == json_resp['data'][0]