Add tests for get_complaint_count endpoint

* Added unit tests for the get_complaint_count endpoint
* Updated the schema to use 'date' format instead of 'datetime'
* Updated the complaint endpoint to convert start_date and end_date to
be dates instead of strings

app/complaint/complaint_rest.py

@@ -23,19 +23,14 @@ def get_all_complaints():
 
 @complaint_blueprint.route('/count-by-date-range', methods=['GET'])
 def get_complaint_count():
-    request_json = request.args.to_dict
-    start_date = None
-    end_date = None
-    # TODO: unit tests have yet to be written, need to test setting start and end date
-    if request_json:
-        validate(request_json, complaint_count_request)
-        start_date = request_json.get('start_date', None)
-        end_date = request_json.get('end_date', None)
-    if not start_date:
-        start_date = datetime.utcnow().date()
-    if not end_date:
-        end_date = datetime.utcnow().date()
+    if request.args:
+        validate(request.args, complaint_count_request)
 
+    # If start and end date are not set, we are expecting today's stats.
+    today = str(datetime.utcnow().date())
+
+    start_date = datetime.strptime(request.args.get('start_date', today), '%Y-%m-%d').date()
+    end_date = datetime.strptime(request.args.get('end_date', today), '%Y-%m-%d').date()
     count_of_complaints = fetch_count_of_complaints(start_date=start_date, end_date=end_date)
 
     return jsonify(count_of_complaints), 200

app/complaint/complaint_schema.py

@@ -5,7 +5,7 @@ complaint_count_request = {
     "type": "object",
     "title": "Complaint count request",
     "properties": {
-        "start_date": {"type": ["string", "null"], "format": "datetime"},
-        "end_date":  {"type": ["string", "null"], "format": "datetime"},
+        "start_date": {"type": ["string", "null"], "format": "date"},
+        "end_date": {"type": ["string", "null"], "format": "date"},
     }
 }

tests/app/complaint/test_complaint_rest.py

@@ -1,5 +1,9 @@
+from datetime import date
 import json
 
+from flask import url_for
+from freezegun import freeze_time
+
 from tests import create_authorization_header
 from tests.app.db import create_complaint, create_service, create_template, create_notification
 
@@ -22,3 +26,39 @@ def test_get_all_complaints_returns_empty_list(client):
 
     assert response.status_code == 200
     assert json.loads(response.get_data(as_text=True)) == []
+
+
+def test_get_complaint_with_start_and_end_date_passes_these_to_dao_function(mocker, client):
+    start_date = date(2018, 6, 11)
+    end_date = date(2018, 6, 11)
+    dao_mock = mocker.patch('app.complaint.complaint_rest.fetch_count_of_complaints', return_value=3)
+    response = client.get(
+        url_for('complaint.get_complaint_count', start_date=start_date, end_date=end_date),
+        headers=[create_authorization_header()]
+    )
+
+    dao_mock.assert_called_once_with(start_date=start_date, end_date=end_date)
+    assert response.status_code == 200
+    assert json.loads(response.get_data(as_text=True)) == 3
+
+
+@freeze_time("2018-06-01 11:00:00")
+def test_get_complaint_sets_start_and_end_date_to_today_if_not_specified(mocker, client):
+    dao_mock = mocker.patch('app.complaint.complaint_rest.fetch_count_of_complaints', return_value=5)
+    response = client.get(url_for('complaint.get_complaint_count'), headers=[create_authorization_header()])
+
+    dao_mock.assert_called_once_with(start_date=date.today(), end_date=date.today())
+    assert response.status_code == 200
+    assert json.loads(response.get_data(as_text=True)) == 5
+
+
+def test_get_complaint_with_invalid_data_returns_400_status_code(client):
+    start_date = '1234-56-78'
+    response = client.get(
+        url_for('complaint.get_complaint_count', start_date=start_date),
+        headers=[create_authorization_header()]
+    )
+
+    assert response.status_code == 400
+    assert response.json['errors'][0]['message'] == 'start_date time data {} does not match format %Y-%m-%d'.format(
+        start_date)