grid programme

node_modules/flickity/test/unit/lazyload.js

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+QUnit.test( 'lazyload', function( assert ) {
+  'use strict';
+
+  var done = assert.async();
+
+  var gallery = document.querySelector('#lazyload');
+  var flkty = new Flickity( gallery, {
+    lazyLoad: 1
+  });
+
+  var loadCount = 0;
+  flkty.on( 'lazyLoad', function( event, cellElem ) {
+    loadCount++;
+
+    assert.equal( event.type, 'load', 'event.type == load' );
+    assert.ok( event.target.complete, 'img ' + loadCount + ' is complete' );
+    assert.ok( cellElem, 'cellElement argument there' );
+    var lazyAttr = event.target.getAttribute('data-flickity-lazyload');
+    assert.ok( !lazyAttr, 'data-flickity-lazyload attribute removed' );
+
+    // after first 2 have loaded, select 7th cell
+    if ( loadCount == 2 ) {
+      flkty.select( 6 );
+    }
+    if ( loadCount == 5 ) {
+      var loadedImgs = gallery.querySelectorAll('.flickity-lazyloaded');
+      assert.equal( loadedImgs.length, '5', 'only 5 images loaded' );
+      done();
+    }
+  });
+
+});