X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/tests/qunit/suites/resources/jquery/jquery.autoEllipsis.test.js

diff --git a/tests/qunit/suites/resources/jquery/jquery.autoEllipsis.test.js b/tests/qunit/suites/resources/jquery/jquery.autoEllipsis.test.js
new file mode 100644
index 00000000..c3521ba8
--- /dev/null
+++ b/tests/qunit/suites/resources/jquery/jquery.autoEllipsis.test.js
@@ -0,0 +1,53 @@
+( function ( $ ) {
+
+	QUnit.module( 'jquery.autoEllipsis', QUnit.newMwEnvironment() );
+
+	function createWrappedDiv( text, width ) {
+		var $wrapper = $( '<div>' ).css( 'width', width ),
+			$div = $( '<div>' ).text( text );
+		$wrapper.append( $div );
+		return $wrapper;
+	}
+
+	function findDivergenceIndex( a, b ) {
+		var i = 0;
+		while ( i < a.length && i < b.length && a[ i ] === b[ i ] ) {
+			i++;
+		}
+		return i;
+	}
+
+	QUnit.test( 'Position right', function ( assert ) {
+		// We need this thing to be visible, so append it to the DOM
+		var $span, spanText, d, spanTextNew,
+			origText = 'This is a really long random string and there is no way it fits in 100 pixels.',
+			$wrapper = createWrappedDiv( origText, '100px' );
+
+		$( '#qunit-fixture' ).append( $wrapper );
+		$wrapper.autoEllipsis( { position: 'right' } );
+
+		// Verify that, and only one, span element was created
+		$span = $wrapper.find( '> span' );
+		assert.strictEqual( $span.length, 1, 'autoEllipsis wrapped the contents in a span element' );
+
+		// Check that the text fits by turning on word wrapping
+		$span.css( 'whiteSpace', 'nowrap' );
+		assert.ltOrEq(
+			$span.width(),
+			$span.parent().width(),
+			'Text fits (making the span "white-space: nowrap" does not make it wider than its parent)'
+		);
+
+		// Add two characters using scary black magic
+		spanText = $span.text();
+		d = findDivergenceIndex( origText, spanText );
+		spanTextNew = spanText.slice( 0, d ) + origText[ d ] + origText[ d ] + '...';
+
+		assert.gt( spanTextNew.length, spanText.length, 'Verify that the new span-length is indeed greater' );
+
+		// Put this text in the span and verify it doesn't fit
+		$span.text( spanTextNew );
+		assert.gt( $span.width(), $span.parent().width(), 'Fit is maximal (adding two characters makes it not fit any more)' );
+	} );
+
+}( jQuery ) );