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WebRoot/node_modules/jquery-backstretch/test/backstretch_test.js

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+/*global QUnit:false, module:false, test:false, asyncTest:false, expect:false*/
+/*global start:false, stop:false ok:false, equal:false, notEqual:false, deepEqual:false*/
+/*global notDeepEqual:false, strictEqual:false, notStrictEqual:false, raises:false*/
+(function($) {
+
+  /*
+    ======== A Handy Little QUnit Reference ========
+    http://docs.jquery.com/QUnit
+
+    Test methods:
+      expect(numAssertions)
+      stop(increment)
+      start(decrement)
+    Test assertions:
+      ok(value, [message])
+      equal(actual, expected, [message])
+      notEqual(actual, expected, [message])
+      deepEqual(actual, expected, [message])
+      notDeepEqual(actual, expected, [message])
+      strictEqual(actual, expected, [message])
+      notStrictEqual(actual, expected, [message])
+      raises(block, [expected], [message])
+  */
+
+  var global = {
+      elems: $('#qunit-fixture').children()
+
+    , img1: 'image1.jpg'
+    , img2: 'image2.jpg'
+    , imgs: ['image1.jpg', 'image2.jpg']
+    , destroy: function () {
+        try {
+          $(':backstretch').data('backstretch').destroy();
+        } catch(err) { /* Do nothing */ }
+      }
+  };
+
+  /* Backstretch tests
+   * ========================= */
+  module('Backstretch', {
+    teardown: global.destroy
+  });
+
+  test('instantiation', function () {
+    strictEqual(global.elems.backstretch(global.img1), global.elems, 'chaninable when executed on elements');
+    strictEqual($.backstretch(global.img1).constructor, Object, 'returns Backstretch object');
+  });
+
+  test('images', function () {
+    raises(function() { $.backstretch(); }, 'raise an error when no image is supplied');
+    raises(function() { $.backstretch([]); }, 'raise an error when an empty image array is supplied');
+  });
+
+  test('options', function () {
+    // Make sure previous instances are destroyed
+    global.destroy();
+
+    var duration = 999999
+      , start = 1
+      , lazyload = false
+      , paused = true
+      , instance = $.backstretch(global.imgs, {duration: duration,lazyload:lazyload,start:start,paused:paused});
+      
+    // Test to make sure the options are being set
+    strictEqual(instance.options.duration, duration, 'passed options are being set');
+    strictEqual(instance.options.lazyload, lazyload, 'passed options are being set');
+    strictEqual(instance.options.start, start, 'passed options are being set');
+    strictEqual(instance.options.paused, paused, 'passed options are being set');
+  });
+  
+    test('optionValidation', function() {
+        var instance = null;
+        //Out of bounds
+        instance = $.backstretch(global.imgs,{start: 100});
+        strictEqual(instance.options.start, global.imgs.length - 1, 'start-option is validated correctly');
+        //Negative Index
+        instance = $.backstretch(global.imgs, {start: -12});
+        strictEqual(instance.options.start, 0, 'start-option is validated correctly');
+    });
+
+  test('resize event', function() {
+    // Make sure previous instances are destroyed
+    global.destroy();
+
+    var duration = 999999
+      , instance = $('body').backstretch(global.img1, {duration: duration})
+      , onResize = function() {
+        resized = true;
+      }
+      , resized = false;
+
+    instance.on('backstretch.resize', onResize);
+    $(window).trigger('resize');
+
+    strictEqual(resized, true, 'passed resize event being called');
+  });
+
+}(jQuery));