Add unit tests for heatmap_ctrl.

public/app/plugins/panel/heatmap/specs/heatmap_ctrl_specs.ts

+///<reference path="../../../../headers/common.d.ts" />
+
+import {describe, beforeEach, it, sinon, expect, angularMocks} from '../../../../../test/lib/common';
+
+import angular from 'angular';
+import moment from 'moment';
+import {HeatmapCtrl} from '../heatmap_ctrl';
+import helpers from '../../../../../test/specs/helpers';
+
+describe('HeatmapCtrl', function() {
+  var ctx = new helpers.ControllerTestContext();
+
+  beforeEach(angularMocks.module('grafana.services'));
+  beforeEach(angularMocks.module('grafana.controllers'));
+  beforeEach(angularMocks.module(function($compileProvider) {
+    $compileProvider.preAssignBindingsEnabled(true);
+  }));
+
+  beforeEach(ctx.providePhase());
+  beforeEach(ctx.createPanelController(HeatmapCtrl));
+  beforeEach(() => {
+    ctx.ctrl.annotationsPromise = Promise.resolve({});
+    ctx.ctrl.updateTimeRange();
+  });
+
+  describe('when time series are outside range', function() {
+
+    beforeEach(function() {
+      var data = [
+        {target: 'test.cpu1', datapoints: [[45, 1234567890], [60, 1234567899]]},
+      ];
+
+      ctx.ctrl.range = {from: moment().valueOf(), to: moment().valueOf()};
+      ctx.ctrl.onDataReceived(data);
+    });
+
+    it('should set datapointsOutside', function() {
+      expect(ctx.ctrl.dataWarning.title).to.be('Data points outside time range');
+    });
+  });
+
+  describe('when time series are inside range', function() {
+    beforeEach(function() {
+      var range = {
+        from: moment().subtract(1, 'days').valueOf(),
+        to: moment().valueOf()
+      };
+
+      var data = [
+        {target: 'test.cpu1', datapoints: [[45, range.from + 1000], [60, range.from + 10000]]},
+      ];
+
+      ctx.ctrl.range = range;
+      ctx.ctrl.onDataReceived(data);
+    });
+
+    it('should set datapointsOutside', function() {
+      expect(ctx.ctrl.dataWarning).to.be(null);
+    });
+  });
+
+  describe('datapointsCount given 2 series', function() {
+    beforeEach(function() {
+      var data = [
+        {target: 'test.cpu1', datapoints: []},
+        {target: 'test.cpu2', datapoints: []},
+      ];
+      ctx.ctrl.onDataReceived(data);
+    });
+
+    it('should set datapointsCount warning', function() {
+      expect(ctx.ctrl.dataWarning.title).to.be('No data points');
+    });
+  });
+
+});

public/test/test-main.js

@@ -38,7 +38,8 @@
       "jquery.flot.time": "vendor/flot/jquery.flot.time",
       "jquery.flot.crosshair": "vendor/flot/jquery.flot.crosshair",
       "jquery.flot.fillbelow": "vendor/flot/jquery.flot.fillbelow",
-      "jquery.flot.gauge": "vendor/flot/jquery.flot.gauge"
+      "jquery.flot.gauge": "vendor/flot/jquery.flot.gauge",
+      "d3": "vendor/d3/d3.js",
     },
 
     packages: {