Add basic data api unit test

metobsapi/tests/test_data_api.py

+import json
+import unittest
+from unittest import mock
+import metobsapi
+
+
+def fake_data(interval, symbols, num_vals):
+    import random
+    from datetime import datetime, timedelta
+    from influxdb.resultset import ResultSet
+    now = datetime(2017, 3, 5, 19, 0, 0)
+    t_format = "%Y-%m-%dT%H:%M:%SZ"
+    measurement_name = "metobs_" + interval
+    series = []
+    for (site, inst), columns in symbols.items():
+        tags = {'site': site, 'inst': inst}
+        vals = []
+        for i in range(num_vals):
+            vals.append(
+                [(now + timedelta(minutes=i)).strftime(t_format)] + \
+                [random.random()] * (len(columns) - 1)
+            )
+        s = {
+            'name': measurement_name,
+            'columns': columns,
+            'tags': tags,
+            'values': vals,
+        }
+        series.append(s)
+    ret = {
+              'series': series,
+              'statement_id': 0,
+          }
+    return ResultSet(ret)
+
+
+class TestDataAPI(unittest.TestCase):
+    def setUp(self):
+        metobsapi.app.config['TESTING'] = True
+        self.app = metobsapi.app.test_client()
+
+    def test_doc(self):
+        res = self.app.get('/api/data')
+        assert b'Data Request Application' in res.data
+
+    @mock.patch('metobsapi.modifyData.query')
+    def test_tower_shorthand_one_symbol_json(self, query_func):
+        r = fake_data('1m', {('aoss', 'tower'): ['time', 'air_temp']}, 9)
+        query_func.return_value = r
+        res = self.app.get('/api/data.json?site=aoss&inst=tower&symbols=air_temp&begin=-00:10:00')
+        res = json.loads(res.data.decode())
+        self.assertEqual(res['code'], 200)
+        self.assertEqual(res['num_results'], 9)
+        self.assertIn('aoss.tower.air_temp', res['results']['data'])
+        self.assertEqual(len(res['results']['timestamps']), 9)