fix sumSeries() function, closes #286

dist/test/datasource-zabbix/specs/timeseries_specs.js

@@ -0,0 +1,33 @@
+'use strict';
+
+var _timeseries = require('../timeseries');
+
+var _timeseries2 = _interopRequireDefault(_timeseries);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+describe('timeseries processing functions', function () {
+
+  describe('sumSeries()', function () {
+    it('should properly sum series', function (done) {
+      var series = [[[0, 1], [1, 2], [1, 3]], [[2, 1], [3, 2], [4, 3]]];
+
+      var expected = [[2, 1], [4, 2], [5, 3]];
+
+      var result = _timeseries2.default.sumSeries(series);
+      expect(result).to.eql(expected);
+      done();
+    });
+
+    it('should properly sum series with nulls', function (done) {
+      // issue #286
+      var series = [[[1, 1], [1, 2], [1, 3]], [[3, 2], [4, 3]]];
+
+      var expected = [[1, 1], [4, 2], [5, 3]];
+
+      var result = _timeseries2.default.sumSeries(series);
+      expect(result).to.eql(expected);
+      done();
+    });
+  });
+}); // import _ from 'lodash';