add cloudwatch datasource test

public/test/specs/cloudwatch-datasource-specs.js

+define([
+  'helpers',
+  'plugins/datasource/cloudwatch/datasource',
+  'aws-sdk',
+], function(helpers) {
+  'use strict';
+
+  describe('CloudWatchDatasource', function() {
+    var ctx = new helpers.ServiceTestContext();
+
+    beforeEach(module('grafana.services'));
+    beforeEach(ctx.providePhase(['templateSrv']));
+    beforeEach(ctx.createService('CloudWatchDatasource'));
+    beforeEach(function() {
+      ctx.ds = new ctx.service({
+        jsonData: {
+          defaultRegion: 'us-east-1',
+          access: 'proxy'
+        }
+      });
+    });
+
+    describe('When performing CloudWatch query', function() {
+      var requestParams;
+
+      var query = {
+        range: { from: 'now-1h', to: 'now' },
+        targets: [
+          {
+            region: 'us-east-1',
+            namespace: 'AWS/EC2',
+            metricName: 'CPUUtilization',
+            dimensions: {
+              InstanceId: 'i-12345678'
+            },
+            statistics: {
+              Average: true
+            },
+            period: 300
+          }
+        ]
+      };
+
+      var response = {
+        Datapoints: [
+          {
+            Average: 1,
+            Timestamp: 'Wed Dec 31 1969 16:00:00 GMT-0800 (PST)'
+          }
+        ],
+        Label: 'CPUUtilization'
+      };
+
+      beforeEach(function() {
+        ctx.ds.getCloudWatchClient = function() {
+          return {
+            getMetricStatistics: function(params, callback) {
+              setTimeout(function() {
+                requestParams = params;
+                callback(null, response);
+              }, 0);
+            }
+          };
+        };
+      });
+
+      it('should generate the correct query', function() {
+        ctx.ds.query(query).then(function() {
+          expect(requestParams.Namespace).to.be(query.targets[0].namespace);
+          expect(requestParams.MetricName).to.be(query.targets[0].metricName);
+          expect(requestParams.Dimensions[0].Name).to.be(Object.keys(query.targets[0].dimensions)[0]);
+          expect(requestParams.Dimensions[0].Value).to.be(query.targets[0].dimensions[Object.keys(query.targets[0].dimensions)[0]]);
+          expect(requestParams.Statistics).to.eql(Object.keys(query.targets[0].statistics));
+          expect(requestParams.Period).to.be(query.targets[0].period);
+        });
+      });
+
+      it('should return series list', function() {
+        ctx.ds.query(query).then(function(result) {
+          var s = Object.keys(query.targets[0].statistics)[0];
+          expect(result.data[0].target).to.be(response.Label + s);
+          expect(result.data[0].datapoints[0][0]).to.be(response.Datapoints[0][s]);
+        });
+      });
+    });
+
+    describe('When performing CloudWatch metricFindQuery', function() {
+      var requestParams;
+
+      var response = {
+        Metrics: [
+          {
+            Namespace: 'AWS/EC2',
+            MetricName: 'CPUUtilization',
+            Dimensions: [
+              {
+                Name: 'InstanceId',
+                Value: 'i-12345678'
+              }
+            ]
+          }
+        ]
+      };
+
+      beforeEach(function() {
+        ctx.ds.getCloudWatchClient = function() {
+          return {
+            listMetrics: function(params, callback) {
+              setTimeout(function() {
+                requestParams = params;
+                callback(null, response);
+              }, 0);
+            }
+          };
+        };
+      });
+
+      it('should return suggest list for region()', function() {
+        var query = 'region()';
+        ctx.ds.metricFindQuery(query).then(function(result) {
+          expect(result).to.contain('us-east-1');
+        });
+      });
+
+      it('should return suggest list for namespace()', function() {
+        var query = 'namespace()';
+        ctx.ds.metricFindQuery(query).then(function(result) {
+          expect(result).to.contain('AWS/EC2');
+        });
+      });
+
+      it('should return suggest list for metrics()', function() {
+        var query = 'metrics(AWS/EC2)';
+        ctx.ds.metricFindQuery(query).then(function(result) {
+          expect(result).to.contain('CPUUtilization');
+        });
+      });
+
+      it('should return suggest list for dimension_keys()', function() {
+        var query = 'dimension_keys(AWS/EC2)';
+        ctx.ds.metricFindQuery(query).then(function(result) {
+          expect(result).to.contain('InstanceId');
+        });
+      });
+
+      it('should return suggest list for dimension_values()', function() {
+        var query = 'dimension_values(us-east-1,AWS/EC2,CPUUtilization)';
+        ctx.ds.metricFindQuery(query).then(function(result) {
+          expect(result).to.contain('InstanceId');
+        });
+      });
+    });
+  });
+});

public/test/test-main.js

@@ -47,6 +47,7 @@ require.config({
     'jquery.flot.fillbelow':   '../vendor/flot/jquery.flot.fillbelow',
 
     modernizr:                '../vendor/modernizr-2.6.1',
+    'aws-sdk':                '../vendor/aws-sdk/dist/aws-sdk.min',
   },
 
   shim: {
@@ -147,6 +148,7 @@ require([
     'specs/unsavedChangesSrv-specs',
     'specs/valueSelectDropdown-specs',
     'specs/opentsdbDatasource-specs',
+    'specs/cloudwatch-datasource-specs',
   ];
 
   var pluginSpecs = (config.plugins.specs || []).map(function (spec) {