Added plpy_mock and check multiple instances for metricsdatagatherer

server/lib/python/cartodb_services/test/test_metrics_log.py

@@ -0,0 +1,23 @@
+from test_helper import *
+from cartodb_services.metrics import MetricsDataGatherer
+from unittest import TestCase
+from mock import Mock, MagicMock
+from nose.tools import assert_raises
+from datetime import datetime, date
+
+
+class TestMetricsDataGatherer(TestCase):
+
+    def setUp(self):
+        plpy_mock_config()
+
+
+    def test_should_use_multiple_instances_for_multiples_requests(self):
+        plpy_mock._define_result("select txid_current", [{'txid': 100}])
+        MetricsDataGatherer.add('test', 1)
+        plpy_mock._define_result("select txid_current", [{'txid': 101}])
+        MetricsDataGatherer.add('test', 2)
+        plpy_mock._define_result("select txid_current", [{'txid': 100}])
+        assert MetricsDataGatherer.get_element('test') is 1
+        plpy_mock._define_result("select txid_current", [{'txid': 101}])
+        assert MetricsDataGatherer.get_element('test') is 2