Initial unit tests (using Mocha and Chai asserts).

.jshintrc

@@ -34,6 +34,13 @@
     "define": true,
     "require": true,
     "Chromath": false,
-    "setImmediate": true
+    "setImmediate": true,
+    "expect": true,
+    "it": true,
+    "describe": true,
+    "sinon": true,
+    "module": true,
+    "beforeEach": true,
+    "inject": true
   }
 }

Gruntfile.js

@@ -40,11 +40,13 @@ module.exports = function(grunt) {
 
     babel: {
       options: {
-        sourceMap: true,
+        presets:  ["es2015"]
-        presets:  ["es2015"],
-        plugins: ['transform-es2015-modules-systemjs', "transform-es2015-for-of"],
       },
       dist: {
+        options: {
+          sourceMap: true,
+          plugins: ['transform-es2015-modules-systemjs', "transform-es2015-for-of"]
+        },
         files: [{
           cwd: 'src',
           expand: true,
@@ -57,6 +59,34 @@ module.exports = function(grunt) {
           dest: 'dist/'
         }]
       },
+      distTestNoSystemJs: {
+        files: [{
+          cwd: 'src',
+          expand: true,
+          src: ['**/*.js'],
+          dest: 'dist/test'
+        }]
+      },
+      distTestsSpecsNoSystemJs: {
+        files: [{
+          expand: true,
+          cwd: 'specs',
+          src: ['**/*.js'],
+          dest: 'dist/test/specs'
+        }]
+      }
+    },
+
+    mochaTest: {
+      test: {
+        options: {
+          reporter: 'spec'
+        },
+        src: [
+          'dist/test/datasource-zabbix/specs/test-main.js',
+          'dist/test/datasource-zabbix/specs/*_specs.js'
+        ]
+      }
     },
 
     sass: {
@@ -77,6 +107,7 @@ module.exports = function(grunt) {
     'copy:src_to_dist',
     'copy:pluginDef',
     'babel',
-    'sass'
+    'sass',
+    'mochaTest'
   ]);
 };

package.json

@@ -23,16 +23,23 @@
     "grunt-contrib-copy": "~0.8.2",
     "grunt-contrib-watch": "^0.6.1",
     "grunt-contrib-uglify": "~0.11.0",
+    "grunt-mocha-test": "~0.12.7",
     "grunt-systemjs-builder": "^0.2.5",
     "load-grunt-tasks": "~3.2.0",
     "grunt-execute": "~0.2.2",
-    "grunt-contrib-clean": "~0.6.0"
+    "grunt-contrib-clean": "~0.6.0",
+    "prunk": "~1.2.1",
+    "jsdom": "~3.1.2",
+    "q": "~1.4.1",
+    "chai": "~3.5.0",
+    "moment": "~2.14.1"
   },
   "dependencies": {
     "babel-plugin-transform-es2015-modules-systemjs": "^6.5.0",
-    "babel-plugin-transform-es2015-for-of": "^6.5.0",
+    "babel-plugin-transform-es2015-for-of": "^6.6.0",
     "babel-preset-es2015": "^6.5.0",
-    "lodash": "~4.0.0"
+    "lodash": "~4.0.0",
+    "mocha": "^2.4.5"
   },
   "homepage": "http://grafana-zabbix.org"
 }

src/datasource-zabbix/specs/datasource_specs.js

@@ -0,0 +1,40 @@
+import {Datasource} from "../module";
+import Q from "q";
+
+describe('ZabbixDatasource', function() {
+  var ctx = {};
+
+  beforeEach(function() {
+    ctx.instanceSettings = {
+      jsonData: {
+        username: 'zabbix',
+        password: 'zabbix',
+        trends: false
+      }
+    };
+    ctx.$q = Q;
+    ctx.templateSrv = {};
+    ctx.alertSrv = {};
+    ctx.zabbixAPIService = function() {};
+    ctx.ZabbixCachingProxy = function() {};
+    ctx.QueryProcessor = function() {};
+    ctx.ds = new Datasource(ctx.instanceSettings, ctx.$q, ctx.templateSrv, ctx.alertSrv,
+                            ctx.zabbixAPIService, ctx.ZabbixCachingProxy, ctx.QueryProcessor);
+  });
+
+  describe('When querying data', function() {
+
+    it('should return an empty array when no targets are set', function(done) {
+      var options = {
+        targets: [],
+        range: {from: null, to: null}
+      };
+      ctx.ds.query(options).then(function(result) {
+        expect(result.data).to.have.length(0);
+        done();
+      });
+    });
+
+  });
+
+});

src/datasource-zabbix/specs/test-main.js

@@ -0,0 +1,43 @@
+// JSHint options
+/* globals global: false */
+
+import prunk from 'prunk';
+import {jsdom} from 'jsdom';
+import chai from 'chai';
+
+// Mock angular module
+var angularMocks = {
+  module: function() {
+    return {
+      directive: function() {},
+      service: function() {},
+      factory: function() {}
+    };
+  }
+};
+
+var datemathMock = {
+  parse: function() {}
+};
+
+// Mock Grafana modules that are not available outside of the core project
+// Required for loading module.js
+prunk.mock('./css/query-editor.css!', 'no css, dude.');
+prunk.mock('app/plugins/sdk', {
+  QueryCtrl: null
+});
+prunk.mock('app/core/utils/datemath', datemathMock);
+prunk.mock('angular', angularMocks);
+prunk.mock('jquery', 'module not found');
+
+// Setup jsdom
+// Required for loading angularjs
+global.document = jsdom('<html><head><script></script></head><body></body></html>');
+global.window = global.document.parentWindow;
+global.navigator = window.navigator = {};
+global.Node = window.Node;
+
+// Setup Chai
+chai.should();
+global.assert = chai.assert;
+global.expect = chai.expect;