3 QUnit.module( 'jquery.autoEllipsis', QUnit.newMwEnvironment() );
5 function createWrappedDiv( text, width ) {
6 var $wrapper = $( '<div>' ).css( 'width', width ),
7 $div = $( '<div>' ).text( text );
8 $wrapper.append( $div );
12 function findDivergenceIndex( a, b ) {
14 while ( i < a.length && i < b.length && a[i] === b[i] ) {
20 QUnit.test( 'Position right', 4, function ( assert ) {
21 // We need this thing to be visible, so append it to the DOM
22 var $span, spanText, d, spanTextNew,
23 origText = 'This is a really long random string and there is no way it fits in 100 pixels.',
24 $wrapper = createWrappedDiv( origText, '100px' );
26 $( '#qunit-fixture' ).append( $wrapper );
27 $wrapper.autoEllipsis( { position: 'right' } );
29 // Verify that, and only one, span element was created
30 $span = $wrapper.find( '> span' );
31 assert.strictEqual( $span.length, 1, 'autoEllipsis wrapped the contents in a span element' );
33 // Check that the text fits by turning on word wrapping
34 $span.css( 'whiteSpace', 'nowrap' );
37 $span.parent().width(),
38 'Text fits (making the span "white-space: nowrap" does not make it wider than its parent)'
41 // Add two characters using scary black magic
42 spanText = $span.text();
43 d = findDivergenceIndex( origText, spanText );
44 spanTextNew = spanText.slice( 0, d ) + origText[d] + origText[d] + '...';
46 assert.gt( spanTextNew.length, spanText.length, 'Verify that the new span-length is indeed greater' );
48 // Put this text in the span and verify it doesn't fit
49 $span.text( spanTextNew );
50 assert.gt( $span.width(), $span.parent().width(), 'Fit is maximal (adding two characters makes it not fit any more)' );