diff --git a/test/driver.js b/test/driver.js
index e2ad26227..84b0c4f7f 100644
--- a/test/driver.js
+++ b/test/driver.js
@@ -70,7 +70,7 @@ window.load = function load() {
   var r = new XMLHttpRequest();
   r.open('GET', manifestFile, false);
   r.onreadystatechange = function loadOnreadystatechange(e) {
-    if (r.readyState == 4) {
+    if (r.readyState === 4) {
       log('done\n');
       manifest = JSON.parse(r.responseText);
       currentTaskIdx = 0;
@@ -132,7 +132,7 @@ function nextTask() {
 }
 
 function continueNextTask() {
-  if (currentTaskIdx == manifest.length) {
+  if (currentTaskIdx === manifest.length) {
     done();
     return;
   }
@@ -291,7 +291,7 @@ function nextPage(task, loadError) {
         var initPromise = new Promise(function (resolve) {
           resolveInitPromise = resolve;
         });
-        if (task.type == 'text') {
+        if (task.type === 'text') {
           // using dummy canvas for pdf context drawing operations
           if (!dummyCanvas) {
             dummyCanvas = document.createElement('canvas');
@@ -354,7 +354,7 @@ function sendQuitRequest(cb) {
   var r = new XMLHttpRequest();
   r.open('POST', '/tellMeToQuit?path=' + escape(appPath), false);
   r.onreadystatechange = function sendQuitRequestOnreadystatechange(e) {
-    if (r.readyState == 4) {
+    if (r.readyState === 4) {
       if (cb) {
         cb();
       }
@@ -409,7 +409,7 @@ function send(url, message, callback) {
   r.open('POST', url, true);
   r.setRequestHeader('Content-Type', 'application/json');
   r.onreadystatechange = function sendTaskResultOnreadystatechange(e) {
-    if (r.readyState == 4) {
+    if (r.readyState === 4) {
       inFlightRequests--;
       // Retry until successful
       if (r.status !== 200) {
diff --git a/test/unit/function_spec.js b/test/unit/function_spec.js
index fb6912311..d3e6f8180 100644
--- a/test/unit/function_spec.js
+++ b/test/unit/function_spec.js
@@ -10,13 +10,13 @@ describe('function', function() {
     this.addMatchers({
       toMatchArray: function(expected) {
         var actual = this.actual;
-        if (actual.length != expected.length) {
+        if (actual.length !== expected.length) {
           return false;
         }
         for (var i = 0; i < expected.length; i++) {
           var a = actual[i], b = expected[i];
           if (isArray(b)) {
-            if (a.length != b.length) {
+            if (a.length !== b.length) {
               return false;
             }
             for (var j = 0; j < a.length; j++) {
diff --git a/test/unit/stream_spec.js b/test/unit/stream_spec.js
index df0278d12..e21e9b455 100644
--- a/test/unit/stream_spec.js
+++ b/test/unit/stream_spec.js
@@ -9,7 +9,7 @@ describe('stream', function() {
     this.addMatchers({
       toMatchTypedArray: function(expected) {
         var actual = this.actual;
-        if (actual.length != expected.length) {
+        if (actual.length !== expected.length) {
           return false;
         }
         for (var i = 0, ii = expected.length; i < ii; i++) {
diff --git a/test/unit/testreporter.js b/test/unit/testreporter.js
index 98a49f5df..d338d8163 100644
--- a/test/unit/testreporter.js
+++ b/test/unit/testreporter.js
@@ -11,7 +11,7 @@ var TestReporter = function(browser, appPath) {
     r.open('POST', action, true);
     r.setRequestHeader('Content-Type', 'application/json');
     r.onreadystatechange = function sendTaskResultOnreadystatechange(e) {
-      if (r.readyState == 4) {
+      if (r.readyState === 4) {
         // Retry until successful
         if (r.status !== 200) {
           send(action, json, cb);