add capability to test via zuul

Provides test coverage for all major browsers

Author: defunctzombie

.zuul.yml

@@ -0,0 +1,12 @@
+ui: mocha-qunit
+browsers:
+  - name: chrome
+    version: oldest..latest
+  - name: firefox
+    version: oldest..latest
+  - name: opera
+    version: latest
+  - name: safari
+    version: oldest..latest
+  - name: ie
+    version: oldest..latest

index.js

@@ -40,6 +40,6 @@ function ieOnEnd (script, cb) {
   script.onreadystatechange = function () {
     if (this.readyState != 'complete' && this.readyState != 'loaded') return
     this.onreadystatechange = null
-    cb() // there is no way to catch loading errors in IE8
+    cb(null, true) // there is no way to catch loading errors in IE8
   }
 }

test/index.html

@@ -0,0 +1,51 @@
+var assert = require('assert');
+var load = require('../')
+
+var last_msg = undefined;
+log = function(msg) {
+  last_msg = msg;
+}
+
+test('success', function(done) {
+  load('test/hello.js', function (err) {
+    assert.ifError(err);
+    assert.equal(last_msg, 'Hello world');
+    last_msg = undefined;
+    done();
+  })
+});
+
+test('no exist', function(done) {
+  load('unexistent.js', function (err, legacy) {
+    if (!legacy) {
+      assert.ok(err);
+    }
+
+    var tid = setTimeout(function() {
+      done();
+    }, 200);
+
+    // some browsers will also throw as well as report erro
+    var old = window.onerror;
+    window.onerror = function(msg, file, line) {
+      if (msg !== 'Error loading script') {
+        assert(false);
+      }
+      window.onerror = old;
+      clearTimeout(tid);
+      done();
+    };
+  })
+});
+
+test('throw', function(done) {
+  var old = window.onerror;
+  // silence the script error
+  window.onerror = function() {};
+  load('test/throw.js', function (err) {
+    assert.ifError(err);
+    window.onerror = old;
+    done();
+  })
+});
+