Added tests

tests/app/main/views/test_returned_letters.py

@@ -0,0 +1,50 @@
+from tests.conftest import SERVICE_ONE_ID, normalize_spaces
+
+
+def test_returned_letter_summary(
+    client_request,
+    mocker
+):
+    summary_data = [{'returned_letter_count': 30, 'reported_at': '2019-12-24'}]
+    mock = mocker.patch("app.service_api_client.get_returned_letter_summary",
+                        return_value=summary_data)
+
+    page = client_request.get("main.returned_letter_summary", service_id=SERVICE_ONE_ID)
+
+    mock.assert_called_once_with(SERVICE_ONE_ID)
+
+    expected_text = "Returned letters reported on Tuesday 24 December 2019 (30 letters)"
+    assert page.h1.string.strip() == 'Returned letters'
+    assert normalize_spaces(page.select('.table-field-left-aligned')[0].text) == expected_text
+
+
+def test_returned_letters_reports(
+    client_request,
+    mocker
+):
+    data = [{
+        'notification_id': '12345678',
+        'client_reference': '2344567',
+        'created_at': '2019-12-24 13:30',
+        'email_address': 'test@gov.uk',
+        'template_name': 'First letter template',
+        'template_id': '3445667',
+        'template_version': 2,
+        'original_file_name': None,
+        'job_row_number': None,
+        'uploaded_letter': 'test_letter.pdf',
+    }]
+    mock = mocker.patch("app.service_api_client.get_returned_letters", return_value=data)
+
+    response = client_request.get_response("main.returned_letters_report",
+                                           service_id=SERVICE_ONE_ID,
+                                           reported_at='2019-12-24')
+
+    report = response.get_data(as_text=True)
+    mock.assert_called_once_with(SERVICE_ONE_ID, '2019-12-24')
+    assert report.strip() == (
+        'Notification ID,Reference,Date sent,Sent by,Template name,Template ID,Template version,'
+        + 'Spreadsheet file name,Spreadsheet row number,Uploaded letter\r\n'
+        + '12345678,2344567,2019-12-24 13:30,test@gov.uk,'
+        + 'First letter template,3445667,2,,,test_letter.pdf'
+    )