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diff --git a/www/wiki/extensions/Cite/modules/ve-cite/tests/ve.ui.DiffElement.test.js b/www/wiki/extensions/Cite/modules/ve-cite/tests/ve.ui.DiffElement.test.js
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+/*!
+ * VisualEditor Cite-specific DiffElement tests.
+ *
+ * @copyright 2011-2018 VisualEditor Team and others; see http://ve.mit-license.org
+ */
+
+QUnit.module( 've.ui.DiffElement (Cite)' );
+
+QUnit.test( 'Diffing', function ( assert ) {
+	var i, len,
+		// spacer = '<div class="ve-ui-diffElement-spacer">⋮</div>',
+		ref = function ( text, num, name ) {
+			var dataMw = {
+				name: 'ref',
+				body: { html: text }
+			};
+			if ( name ) {
+				dataMw.attrs = { name: name };
+			}
+			return '<sup typeof="mw:Extension/ref" data-mw="' + JSON.stringify( dataMw ).replace( /"/g, '&quot;' ) + '" class="mw-ref">' +
+						'<a style="counter-reset: mw-Ref ' + num + ';"><span class="mw-reflink-text">[' + num + ']</span></a>' +
+					'</sup>';
+		},
+		cases = [
+			{
+				msg: 'Simple ref change',
+				oldDoc:
+					'<p>' + ref( 'Foo' ) + ref( 'Bar' ) + ref( 'Baz' ) + '</p>' +
+					'<h2>Notes</h2>' +
+					'<div typeof="mw:Extension/references" data-mw="{&quot;name&quot;:&quot;references&quot;}"></div>',
+				newDoc:
+					'<p>' + ref( 'Foo' ) + ref( 'Bar ish' ) + ref( 'Baz' ) + '</p>' +
+					'<h2>Notes</h2>' +
+					'<div typeof="mw:Extension/references" data-mw="{&quot;name&quot;:&quot;references&quot;}"></div>',
+				expected:
+					'<div class="ve-ui-diffElement-doc-child-change">' +
+						'<p>' +
+							ref( 'Foo', '1' ) +
+							'<span data-diff-action="change-remove">' +
+								ref( 'Bar', '2', ':0' ) +
+							'</span>' +
+							'<span data-diff-action="change-insert">' +
+								ref( 'Bar ish', '2', ':0' ) +
+							'</span>' +
+							ref( 'Baz', '3' ) +
+						'</p>' +
+					'</div>' +
+					'<h2 data-diff-action="none">Notes</h2>' +
+					'<div class="ve-ui-diffElement-doc-child-change" data-diff-move="undefined">' +
+						'<ol start="1">' +
+							'<li><p data-diff-action="none">Foo</p></li>' +
+						'</ol>' +
+						'<ol start="2">' +
+							'<li><div class="ve-ui-diffElement-doc-child-change">Bar<ins data-diff-action="insert"> ish</ins></div></li>' +
+						'</ol>' +
+						'<ol start="3">' +
+							'<li><p data-diff-action="none">Baz</p></li>' +
+						'</ol>' +
+					'</div>'
+			}
+		];
+
+	for ( i = 0, len = cases.length; i < len; i++ ) {
+		ve.test.utils.runDiffElementTest( assert, cases[ i ] );
+	}
+
+} );