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

   1 ( function ( mw, $ ) {
   2
   3 QUnit.module( 'jquery.autoEllipsis', QUnit.newMwEnvironment() );
   4
   5 function createWrappedDiv( text, width ) {
   6         var $wrapper = $( '<div>' ).css( 'width', width );
   7         var $div = $( '<div>' ).text( text );
   8         $wrapper.append( $div );
   9         return $wrapper;
  10 }
  11
  12 function findDivergenceIndex( a, b ) {
  13         var i = 0;
  14         while ( i < a.length && i < b.length && a[i] === b[i] ) {
  15                 i++;
  16         }
  17         return i;
  18 }
  19
  20 QUnit.test( 'Position right', 4, function ( assert ) {
  21         // We need this thing to be visible, so append it to the DOM
  22         var origText = 'This is a really long random string and there is no way it fits in 100 pixels.';
  23         var $wrapper = createWrappedDiv( origText, '100px' );
  24         $( '#qunit-fixture' ).append( $wrapper );
  25         $wrapper.autoEllipsis( { position: 'right' } );
  26
  27         // Verify that, and only one, span element was created
  28         var $span = $wrapper.find( '> span' );
  29         assert.strictEqual( $span.length, 1, 'autoEllipsis wrapped the contents in a span element' );
  30
  31         // Check that the text fits by turning on word wrapping
  32         $span.css( 'whiteSpace', 'nowrap' );
  33         assert.ltOrEq( $span.width(), $span.parent().width(), "Text fits (making the span 'white-space:nowrap' does not make it wider than its parent)" );
  34
  35         // Add two characters using scary black magic
  36         var spanText = $span.text();
  37         var d = findDivergenceIndex( origText, spanText );
  38         var spanTextNew = spanText.substr( 0, d ) + origText[d] + origText[d] + '...';
  39
  40         assert.gt( spanTextNew.length, spanText.length, 'Verify that the new span-length is indeed greater' );
  41
  42         // Put this text in the span and verify it doesn't fit
  43         $span.text( spanTextNew );
  44         // In IE6 width works like min-width, allow IE6's width to be "equal to"
  45         if ( $.browser.msie && Number( $.browser.version ) === 6 ) {
  46                 assert.gtOrEq( $span.width(), $span.parent().width(), 'Fit is maximal (adding two characters makes it not fit any more) - IE6: Maybe equal to as well due to width behaving like min-width in IE6' );
  47         } else {
  48                 assert.gt( $span.width(), $span.parent().width(), 'Fit is maximal (adding two characters makes it not fit any more)' );
  49         }
  50 });
  51
  52 }( mediaWiki, jQuery ) );