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

   1 module( 'jquery.autoEllipsis' );
   2
   3 test( '-- Initial check', function() {
   4         expect(1);
   5         ok( $.fn.autoEllipsis, 'jQuery.fn.autoEllipsis defined' );
   6 });
   7
   8 function createWrappedDiv( text, width ) {
   9         var $wrapper = $( '<div />' ).css( 'width', width );
  10         var $div = $( '<div />' ).text( text );
  11         $wrapper.append( $div );
  12         return $wrapper;
  13 }
  14
  15 function findDivergenceIndex( a, b ) {
  16         var i = 0;
  17         while ( i < a.length && i < b.length && a[i] == b[i] ) {
  18                 i++;
  19         }
  20         return i;
  21 }
  22
  23 test( 'Position right', function() {
  24         expect(4);
  25
  26         // We need this thing to be visible, so append it to the DOM
  27         var origText = 'This is a really long random string and there is no way it fits in 100 pixels.';
  28         var $wrapper = createWrappedDiv( origText, '100px' );
  29         $( 'body' ).append( $wrapper );
  30         $wrapper.autoEllipsis( { position: 'right' } );
  31
  32         // Verify that, and only one, span element was created
  33         var $span = $wrapper.find( '> span' );
  34         strictEqual( $span.length, 1, 'autoEllipsis wrapped the contents in a span element' );
  35
  36         // Check that the text fits by turning on word wrapping
  37         $span.css( 'whiteSpace', 'nowrap' );
  38         ltOrEq( $span.width(), $span.parent().width(), "Text fits (making the span 'white-space:nowrap' does not make it wider than its parent)" );
  39
  40         // Add two characters using scary black magic
  41         var spanText = $span.text();
  42         var d = findDivergenceIndex( origText, spanText );
  43         var spanTextNew = spanText.substr( 0, d ) + origText[d] + origText[d] + '...';
  44
  45         gt( spanTextNew.length, spanText.length, 'Verify that the new span-length is indeed greater' );
  46
  47         // Put this text in the span and verify it doesn't fit
  48         $span.text( spanTextNew );
  49         // In IE6 width works like min-width, allow IE6's width to be "equal to"
  50         if ( $.browser.msie && Number( $.browser.version ) == 6 ) {
  51                 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' );
  52         } else {
  53                 gt( $span.width(), $span.parent().width(), 'Fit is maximal (adding two characters makes it not fit any more)' );
  54         }
  55
  56         // Clean up
  57         $wrapper.remove();
  58 });