+ describe('Undo/redo', function() {
+
+ it('smoke tests', function() {
+ var doc = getDocumentFromXML('<div>Alice</div>'),
+ textNode = doc.root.contents()[0];
+
+ expect(doc.undoStack).to.have.length(0);
+
+ textNode.wrapWith({tagName: 'span', start:1, end:2});
+ expect(doc.undoStack).to.have.length(1, '1');
+ expect(doc.toXML()).to.equal('<div>A<span>l</span>ice</div>');
+
+ doc.undo();
+ expect(doc.undoStack).to.have.length(0, '2');
+ expect(doc.toXML()).to.equal('<div>Alice</div>');
+
+ doc.redo();
+ expect(doc.undoStack).to.have.length(1, '3');
+ expect(doc.toXML()).to.equal('<div>A<span>l</span>ice</div>');
+
+ doc.undo();
+ expect(doc.undoStack).to.have.length(0, '4');
+ expect(doc.toXML()).to.equal('<div>Alice</div>');
+
+ doc.undo();
+ expect(doc.undoStack).to.have.length(0, '5');
+ expect(doc.toXML()).to.equal('<div>Alice</div>');
+ });
+
+ it('smoke tests 2', function() {
+ var doc = getDocumentFromXML('<div>Alice</div>'),
+ textNode = doc.root.contents()[0],
+ path = textNode.getPath();
+
+ textNode.setText('Alice ');
+ textNode.setText('Alice h');
+ textNode.setText('Alice ha');
+ textNode.setText('Alice has');
+
+ expect(textNode.getText()).to.equal('Alice has');
+
+ doc.undo();
+ expect(doc.root.contents()[0].getText()).to.equal('Alice ha', '1');
+
+ doc.undo();
+ expect(doc.root.contents()[0].getText()).to.equal('Alice h', '2');
+
+ doc.redo();
+ expect(doc.root.contents()[0].getText()).to.equal('Alice ha', '3');
+
+ doc.redo();
+ expect(doc.root.contents()[0].getText()).to.equal('Alice has', '4');
+
+ doc.undo();
+ doc.undo();
+ textNode = doc.getNodeByPath(path);
+ textNode.setText('Cat');
+ doc.undo();
+ textNode = doc.getNodeByPath(path);
+ expect(textNode.getText()).to.equal('Alice h');
+ });
+
+
+ var sampleMethod = function(val) {
+ this._$.attr('x', val);
+ };
+
+ var transformations = {
+ 'unaware': sampleMethod,
+ 'returning change root': {
+ impl: sampleMethod,
+ getChangeRoot: function() {
+ return this.context;
+ }
+ },
+ 'implementing undo operation': {
+ impl: function(t, val) {
+ t.oldVal = this.getAttr('x');
+ sampleMethod.call(this, val);
+ },
+ undo: function(t) {
+ this.setAttr('x', t.oldVal);
+ }
+ }
+ };
+
+ _.pairs(transformations).forEach(function(pair) {
+ var name = pair[0],
+ transformaton = pair[1];
+
+ describe(name + ' transformation: ', function() {
+ var doc, node, nodePath;
+
+ beforeEach(function() {
+ doc = getDocumentFromXML('<div><test x="old"></test></div>');
+
+ doc.registerExtension({elementNode: {transformations: {
+ test: transformaton
+ }}});
+
+ node = doc.root.contents()[0];
+ nodePath = node.getPath();
+ });
+
+ it('transforms as expected', function() {
+ node.test('new');
+ expect(node.getAttr('x')).to.equal('new');
+ });