1 files changed, 70 insertions, 0 deletions
diff --git a/vendor/desandro/imagesloaded/test/unit/background.js b/vendor/desandro/imagesloaded/test/unit/background.js
new file mode 100644
index 000000000..ca76fad6f
--- /dev/null
+++ b/vendor/desandro/imagesloaded/test/unit/background.js
@@ -0,0 +1,70 @@
+QUnit.test( 'background', function( assert ) {
+  'use strict';
+
+  // from Modernizr
+  var supportsMultiBGs = ( function() {
+    var style = document.createElement('a').style;
+    style.cssText = 'background:url(https://),url(https://),red url(https://)';
+    return (/(url\s*\(.*?){3}/).test(style.background);
+  })();
+
+  var multiBGCount = supportsMultiBGs ? 3 : 0;
+  var done = assert.async( 14 + multiBGCount );
+
+  var imgLoad0 = imagesLoaded( '#background .tulip', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .orange-tree');
+    done();
+  });
+  assert.equal( imgLoad0.images.length, 1, '1 image on .images' );
+
+  imgLoad0.on( 'progress', function( instance, image, element ) {
+    assert.ok( element.nodeName == 'DIV', 'progress; element is div');
+    assert.ok( image.isLoaded, 'progress; image.isLoaded');
+    done();
+  });
+
+  var imgLoad1 = imagesLoaded( '#background .thunder-cloud', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .thunder-cloud');
+    done();
+  });
+  assert.equal( imgLoad1.images.length, 1, '1 image on .images' );
+
+  // multiple backgrounds
+  var imgLoad2 = imagesLoaded( '#background .multi', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .multi');
+    done();
+  });
+  assert.equal( imgLoad2.images.length, multiBGCount, 'correct multiple BG count on .images' );
+
+  // multiple elements
+  var imgLoad3 = imagesLoaded( '#background .bg-box', { background: true }, function() {
+    assert.ok( true, 'callback triggered on .bg-box');
+    var count = 5 + multiBGCount;
+    assert.equal( imgLoad3.images.length, count, count + ' images on .bg-box' );
+    done();
+  });
+
+  imgLoad3.on('progress', function( instance, image/*, element */) {
+    assert.ok( true, 'progress on .bg-box; ' + image.img.src );
+    assert.equal( image.isLoaded, true, 'image.isLoaded == true' );
+    done();
+  });
+
+  // background and <img> children
+  var imgLoad4 = imagesLoaded( '#background .gulls', { background: true } );
+  assert.equal( imgLoad4.images.length, 3, '3 images: 1 background and 2 <img>' );
+
+  imgLoad4.on( 'progress', function( instance, image ) {
+    assert.equal( image.isLoaded, true, 'image is loaded' );
+    done();
+  });
+
+  // child background selector
+  var imgLoad5 = imagesLoaded( '#background', { background: '.bg-box' }, function() {
+    var count = 5 + multiBGCount;
+    assert.equal( imgLoad5.images.length, count,
+      count + ' images on .bg-box, with {background: .bg-box}' );
+    done();
+  });
+
+});