diff --git a/.jshintrc b/.jshintrc
index fe86382..300d6de 100644
--- a/.jshintrc
+++ b/.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
   }
 }
diff --git a/Gruntfile.js b/Gruntfile.js
index f3ca1e0..025733b 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -40,11 +40,13 @@ module.exports = function(grunt) {
 
     babel: {
       options: {
-        sourceMap: true,
-        presets:  ["es2015"],
-        plugins: ['transform-es2015-modules-systemjs', "transform-es2015-for-of"],
+        presets:  ["es2015"]
       },
       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: {
@@ -102,6 +132,7 @@ module.exports = function(grunt) {
     'jshint',
     'jscs',
     'sass',
-    'babel'
+    'babel',
+    'mochaTest'
   ]);
 };
diff --git a/package.json b/package.json
index 560e34b..5d305bb 100644
--- a/package.json
+++ b/package.json
@@ -23,19 +23,28 @@
     "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",
+    "sinon-chai": "~2.8.0",
+    "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",
     "grunt-contrib-jshint": "^1.0.0",
     "grunt-jscs": "^2.8.0",
     "jshint-stylish": "^2.1.0",
-    "lodash": "~4.0.0"
+    "lodash": "~4.0.0",
+    "mocha": "^2.4.5",
+    "sinon": "~1.16.1"
   },
   "homepage": "http://grafana-zabbix.org"
 }
diff --git a/src/datasource-zabbix/datasource.js b/src/datasource-zabbix/datasource.js
index f2176c2..b860833 100644
--- a/src/datasource-zabbix/datasource.js
+++ b/src/datasource-zabbix/datasource.js
@@ -449,7 +449,7 @@ function formatMetric(metricObj) {
  * template variables, for example
  * /CPU $cpu_item.*time/ where $cpu_item is system,user,iowait
  */
-function zabbixTemplateFormat(value) {
+export function zabbixTemplateFormat(value) {
   if (typeof value === 'string') {
     return utils.escapeRegex(value);
   }
@@ -468,7 +468,7 @@ function zabbixTemplateFormat(value) {
  */
 function replaceTemplateVars(templateSrv, target, scopedVars) {
   var replacedTarget = templateSrv.replace(target, scopedVars, zabbixTemplateFormat);
-  if (target !== replacedTarget && !utils.regexPattern.test(replacedTarget)) {
+  if (target !== replacedTarget && !utils.isRegex(replacedTarget)) {
     replacedTarget = '/^' + replacedTarget + '$/';
   }
   return replacedTarget;
diff --git a/src/datasource-zabbix/specs/datasource_specs.js b/src/datasource-zabbix/specs/datasource_specs.js
new file mode 100644
index 0000000..923d99a
--- /dev/null
+++ b/src/datasource-zabbix/specs/datasource_specs.js
@@ -0,0 +1,237 @@
+import {Datasource} from "../module";
+import {zabbixTemplateFormat} from "../datasource";
+import Q from "q";
+import sinon from 'sinon';
+import _ from 'lodash';
+
+describe('ZabbixDatasource', () => {
+  let ctx = {};
+  let defined = sinon.match.defined;
+
+  beforeEach(() => {
+    ctx.instanceSettings = {
+      jsonData: {
+        username: 'zabbix',
+        password: 'zabbix',
+        trends: true,
+        trendsFrom: '7d'
+      }
+    };
+    ctx.$q = Q;
+    ctx.templateSrv = {};
+    ctx.alertSrv = {};
+    ctx.zabbixAPIService   = () => {};
+    ctx.ZabbixCachingProxy = () => {};
+    ctx.QueryProcessor     = () => {};
+
+    ctx.ds = new Datasource(ctx.instanceSettings, ctx.$q, ctx.templateSrv, ctx.alertSrv,
+                            ctx.zabbixAPIService, ctx.ZabbixCachingProxy, ctx.QueryProcessor);
+  });
+
+  describe('When querying data', () => {
+    beforeEach(() => {
+      ctx.ds.replaceTemplateVars = (str) => str;
+    });
+
+    ctx.options = {
+      targets: [
+        {
+          group: {filter: ""},
+          host: {filter: ""},
+          application: {filter: ""},
+          item: {filter: ""}
+        }
+      ],
+      range: {from: 'now-7d', to: 'now'}
+    };
+
+    it('should return an empty array when no targets are set', (done) => {
+      let options = {
+        targets: [],
+        range: {from: 'now-6h', to: 'now'}
+      };
+      ctx.ds.query(options).then(result => {
+        expect(result.data).to.have.length(0);
+        done();
+      });
+    });
+
+    it('should use trends if it enabled and time more than trendsFrom', (done) => {
+      let ranges = ['now-7d', 'now-168h', 'now-1M', 'now-1y'];
+
+      _.forEach(ranges, range => {
+        ctx.options.range.from = range;
+        ctx.ds.queryNumericData = sinon.spy();
+        ctx.ds.query(ctx.options);
+
+        // Check that useTrends options is true
+        expect(ctx.ds.queryNumericData)
+          .to.have.been.calledWith(defined, defined, defined, true);
+      });
+
+      done();
+    });
+
+    it('shouldnt use trends if it enabled and time less than trendsFrom', (done) => {
+      let ranges = ['now-6d', 'now-167h', 'now-1h', 'now-30m', 'now-30s'];
+
+      _.forEach(ranges, range => {
+        ctx.options.range.from = range;
+        ctx.ds.queryNumericData = sinon.spy();
+        ctx.ds.query(ctx.options);
+
+        // Check that useTrends options is false
+        expect(ctx.ds.queryNumericData)
+          .to.have.been.calledWith(defined, defined, defined, false);
+      });
+      done();
+    });
+
+  });
+
+  describe('When replacing template variables', () => {
+
+    function testReplacingVariable(target, varValue, expectedResult, done) {
+      ctx.ds.templateSrv.replace = () => {
+        return zabbixTemplateFormat(varValue);
+      };
+
+      let result = ctx.ds.replaceTemplateVars(target);
+      expect(result).to.equal(expectedResult);
+      done();
+    }
+
+    /*
+     * Alphanumerics, spaces, dots, dashes and underscores
+     * are allowed in Zabbix host name.
+     * 'AaBbCc0123 .-_'
+     */
+    it('should return properly escaped regex', (done) => {
+      let target = '$host';
+      let template_var_value = 'AaBbCc0123 .-_';
+      let expected_result = '/^AaBbCc0123 \\.-_$/';
+
+      testReplacingVariable(target, template_var_value, expected_result, done);
+    });
+
+    /*
+     * Single-value variable
+     * $host = backend01
+     * $host => /^backend01|backend01$/
+     */
+    it('should return proper regex for single value', (done) => {
+      let target = '$host';
+      let template_var_value = 'backend01';
+      let expected_result = '/^backend01$/';
+
+      testReplacingVariable(target, template_var_value, expected_result, done);
+    });
+
+    /*
+     * Multi-value variable
+     * $host = [backend01, backend02]
+     * $host => /^(backend01|backend01)$/
+     */
+    it('should return proper regex for multi-value', (done) => {
+      let target = '$host';
+      let template_var_value = ['backend01', 'backend02'];
+      let expected_result = '/^(backend01|backend02)$/';
+
+      testReplacingVariable(target, template_var_value, expected_result, done);
+    });
+  });
+
+  describe('When invoking metricFindQuery()', () => {
+    beforeEach(() => {
+      ctx.ds.replaceTemplateVars = (str) => str;
+      ctx.ds.zabbixCache = {
+        getGroups: () => Q.when([])
+      };
+      ctx.ds.queryProcessor =  {
+        getGroups: () => Q.when([]),
+        getHosts: () => Q.when([]),
+        getApps: () => Q.when([]),
+        getItems: () => Q.when([])
+      };
+    });
+
+    it('should return groups', (done) => {
+      const tests = [
+        {query: '*',        expect: '/.*/'},
+        {query: '',         expect: ''},
+        {query: 'Backend',  expect: 'Backend'},
+        {query: 'Back*',    expect: 'Back*'}
+      ];
+
+      let getGroups = sinon.spy(ctx.ds.zabbixCache, 'getGroups');
+      for (const test of tests) {
+        ctx.ds.metricFindQuery(test.query);
+        expect(getGroups).to.have.been.calledWith(test.expect);
+        getGroups.reset();
+      }
+      done();
+    });
+
+    it('should return hosts', (done) => {
+      const tests = [
+        {query: '*.*',       expect: '/.*/'},
+        {query: '.',         expect: ''},
+        {query: 'Backend.*', expect: 'Backend'},
+        {query: 'Back*.',    expect: 'Back*'}
+      ];
+
+      let getHosts = sinon.spy(ctx.ds.queryProcessor, 'getHosts');
+      for (const test of tests) {
+        ctx.ds.metricFindQuery(test.query);
+        expect(getHosts).to.have.been.calledWith(test.expect);
+        getHosts.reset();
+      }
+      done();
+    });
+
+    it('should return applications', (done) => {
+      const tests = [
+        {query: '*.*.*',               expect: ['/.*/', '/.*/']},
+        {query: '.*.',                 expect: ['', '/.*/']},
+        {query: 'Backend.backend01.*', expect: ['Backend', 'backend01']},
+        {query: 'Back*.*.',            expect: ['Back*', '/.*/']}
+      ];
+
+      let getApps = sinon.spy(ctx.ds.queryProcessor, 'getApps');
+      for (const test of tests) {
+        ctx.ds.metricFindQuery(test.query);
+        expect(getApps).to.have.been.calledWith(test.expect[0], test.expect[1]);
+        getApps.reset();
+      }
+      done();
+    });
+
+    it('should return items', (done) => {
+      const tests = [
+        {query: '*.*.*.*',               expect: ['/.*/', '/.*/', '']},
+        {query: '.*.*.*',                expect: ['', '/.*/', '']},
+        {query: 'Backend.backend01.*.*', expect: ['Backend', 'backend01', '']},
+        {query: 'Back*.*.cpu.*',         expect: ['Back*', '/.*/', 'cpu']}
+      ];
+
+      let getItems = sinon.spy(ctx.ds.queryProcessor, 'getItems');
+      for (const test of tests) {
+        ctx.ds.metricFindQuery(test.query);
+        expect(getItems)
+          .to.have.been.calledWith(test.expect[0], test.expect[1], test.expect[2]);
+        getItems.reset();
+      }
+      done();
+    });
+
+    it('should invoke method with proper arguments', (done) => {
+      let query = '*.*';
+
+      let getHosts = sinon.spy(ctx.ds.queryProcessor, 'getHosts');
+      ctx.ds.metricFindQuery(query);
+      expect(getHosts).to.have.been.calledWith('/.*/');
+      done();
+    });
+  });
+
+});
diff --git a/src/datasource-zabbix/specs/modules/datemath.js b/src/datasource-zabbix/specs/modules/datemath.js
new file mode 100644
index 0000000..efbf0bf
--- /dev/null
+++ b/src/datasource-zabbix/specs/modules/datemath.js
@@ -0,0 +1,111 @@
+import _ from 'lodash';
+import moment from 'moment';
+
+var units = ['y', 'M', 'w', 'd', 'h', 'm', 's'];
+
+export function parse(text, roundUp) {
+  if (!text) { return undefined; }
+  if (moment.isMoment(text)) { return text; }
+  if (_.isDate(text)) { return moment(text); }
+
+  var time;
+  var mathString = '';
+  var index;
+  var parseString;
+
+  if (text.substring(0, 3) === 'now') {
+    time = moment();
+    mathString = text.substring('now'.length);
+  } else {
+    index = text.indexOf('||');
+    if (index === -1) {
+      parseString = text;
+      mathString = ''; // nothing else
+    } else {
+      parseString = text.substring(0, index);
+      mathString = text.substring(index + 2);
+    }
+    // We're going to just require ISO8601 timestamps, k?
+    time = moment(parseString, moment.ISO_8601);
+  }
+
+  if (!mathString.length) {
+    return time;
+  }
+
+  return parseDateMath(mathString, time, roundUp);
+}
+
+export function isValid(text) {
+  var date = parse(text);
+  if (!date) {
+    return false;
+  }
+
+  if (moment.isMoment(date)) {
+    return date.isValid();
+  }
+
+  return false;
+}
+
+export function parseDateMath(mathString, time, roundUp) {
+  var dateTime = time;
+  var i = 0;
+  var len = mathString.length;
+
+  while (i < len) {
+    var c = mathString.charAt(i++);
+    var type;
+    var num;
+    var unit;
+
+    if (c === '/') {
+      type = 0;
+    } else if (c === '+') {
+      type = 1;
+    } else if (c === '-') {
+      type = 2;
+    } else {
+      return undefined;
+    }
+
+    if (isNaN(mathString.charAt(i))) {
+      num = 1;
+    } else if (mathString.length === 2) {
+      num = mathString.charAt(i);
+    } else {
+      var numFrom = i;
+      while (!isNaN(mathString.charAt(i))) {
+        i++;
+        if (i > 10) { return undefined; }
+      }
+      num = parseInt(mathString.substring(numFrom, i), 10);
+    }
+
+    if (type === 0) {
+      // rounding is only allowed on whole, single, units (eg M or 1M, not 0.5M or 2M)
+      if (num !== 1) {
+        return undefined;
+      }
+    }
+    unit = mathString.charAt(i++);
+
+    if (!_.includes(units, unit)) {
+      return undefined;
+    } else {
+      if (type === 0) {
+        if (roundUp) {
+          dateTime.endOf(unit);
+        } else {
+          dateTime.startOf(unit);
+        }
+      } else if (type === 1) {
+        dateTime.add(num, unit);
+      } else if (type === 2) {
+        dateTime.subtract(num, unit);
+      }
+    }
+  }
+  return dateTime;
+}
diff --git a/src/datasource-zabbix/specs/test-main.js b/src/datasource-zabbix/specs/test-main.js
new file mode 100644
index 0000000..cdaec55
--- /dev/null
+++ b/src/datasource-zabbix/specs/test-main.js
@@ -0,0 +1,49 @@
+// JSHint options
+/* globals global: false */
+
+import prunk from 'prunk';
+import {jsdom} from 'jsdom';
+import chai from 'chai';
+// import sinon from 'sinon';
+import sinonChai from 'sinon-chai';
+import * as dateMath from './modules/datemath';
+
+// Mock angular module
+var angularMocks = {
+  module: function() {
+    return {
+      directive: function() {},
+      service: function() {},
+      factory: function() {}
+    };
+  }
+};
+
+var datemathMock = {
+  parse: dateMath.parse,
+  parseDateMath: dateMath.parseDateMath,
+  isValid: dateMath.isValid
+};
+
+// 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();
+chai.use(sinonChai);
+global.assert = chai.assert;
+global.expect = chai.expect;