tests/qunit/suites/resources/jquery/jquery.hidpi.test.js

   1 ( function ( $ ) {
   2         QUnit.module( 'jquery.hidpi', QUnit.newMwEnvironment() );
   3
   4         QUnit.test( 'devicePixelRatio', function ( assert ) {
   5                 var devicePixelRatio = $.devicePixelRatio();
   6                 assert.strictEqual( typeof devicePixelRatio, 'number', '$.devicePixelRatio() returns a number' );
   7         } );
   8
   9         QUnit.test( 'bracketedDevicePixelRatio', function ( assert ) {
  10                 var ratio = $.bracketedDevicePixelRatio();
  11                 assert.strictEqual( typeof ratio, 'number', '$.bracketedDevicePixelRatio() returns a number' );
  12         } );
  13
  14         QUnit.test( 'bracketDevicePixelRatio', function ( assert ) {
  15                 assert.strictEqual( $.bracketDevicePixelRatio( 0.75 ), 1, '0.75 gives 1' );
  16                 assert.strictEqual( $.bracketDevicePixelRatio( 1 ), 1, '1 gives 1' );
  17                 assert.strictEqual( $.bracketDevicePixelRatio( 1.25 ), 1.5, '1.25 gives 1.5' );
  18                 assert.strictEqual( $.bracketDevicePixelRatio( 1.5 ), 1.5, '1.5 gives 1.5' );
  19                 assert.strictEqual( $.bracketDevicePixelRatio( 1.75 ), 2, '1.75 gives 2' );
  20                 assert.strictEqual( $.bracketDevicePixelRatio( 2 ), 2, '2 gives 2' );
  21                 assert.strictEqual( $.bracketDevicePixelRatio( 2.5 ), 2, '2.5 gives 2' );
  22                 assert.strictEqual( $.bracketDevicePixelRatio( 3 ), 2, '3 gives 2' );
  23         } );
  24
  25         QUnit.test( 'matchSrcSet', function ( assert ) {
  26                 var srcset = 'onefive.png 1.5x, two.png 2x';
  27
  28                 // Nice exact matches
  29                 assert.strictEqual( $.matchSrcSet( 1, srcset ), null, '1.0 gives no match' );
  30                 assert.strictEqual( $.matchSrcSet( 1.5, srcset ), 'onefive.png', '1.5 gives match' );
  31                 assert.strictEqual( $.matchSrcSet( 2, srcset ), 'two.png', '2 gives match' );
  32
  33                 // Non-exact matches; should return the next-biggest specified
  34                 assert.strictEqual( $.matchSrcSet( 1.25, srcset ), null, '1.25 gives no match' );
  35                 assert.strictEqual( $.matchSrcSet( 1.75, srcset ), 'onefive.png', '1.75 gives match to 1.5' );
  36                 assert.strictEqual( $.matchSrcSet( 2.25, srcset ), 'two.png', '2.25 gives match to 2' );
  37         } );
  38 }( jQuery ) );