+
+ it('ignores transformation if document didn\'t emit change event', function() {
+ var doc = getDocumentFromXML('<div></div>');
+
+ doc.registerExtension({elementNode: {transformations: {
+ test: function() {
+ // empty
+ }
+ }}});
+
+ doc.root.test();
+ expect(doc.undoStack.length).to.equal(0);
+
+ });
+
+ describe('Transactions', function() {
+ it('allows to undo/redo series of transformations at once', function() {
+ var doc = getDocumentFromXML('<div></div>');
+
+ doc.registerExtension({
+ elementNode: {transformations: {
+ test: function(v) {
+ this.setAttr('test', v);
+ }
+ }}
+ });
+
+ doc.startTransaction();
+ doc.root.test('1');
+ doc.root.test('2');
+ doc.root.test('3');
+ doc.endTransaction();
+
+ doc.undo();
+ expect(doc.root.getAttr('test'), '1');
+ doc.redo();
+ expect(doc.root.getAttr('test'), '3');
+ doc.undo();
+ expect(doc.root.getAttr('test'), '1');
+ doc.redo();
+ expect(doc.root.getAttr('test'), '3');
+ });
+
+ it('ignores empty transactions', function() {
+ var doc = getDocumentFromXML('<div></div>');
+ doc.startTransaction();
+ doc.endTransaction();
+ expect(doc.undoStack).to.have.length(0, 'empty transaction doesn\'t get pushed into undo stack');
+ });
+
+ it('doesn\'t break on optimizations', function() {
+ // This is a smoke test checking if optimizations made to transaction undoing
+ // doesnt't break anything.
+ var doc = getDocumentFromXML('<div smart="1" unaware="1"></div>');
+
+ doc.registerExtension({
+ elementNode: {transformations: {
+ unaware: function(v) {
+ this.setAttr('unware', v);
+ this.triggerChangeEvent();
+ },
+ smart: {
+ impl: function(t, v) {
+ t.oldVal = this.getAttr('smart');
+ this.setAttr('smart', v);
+ this.triggerChangeEvent();
+ },
+ undo: function(t) {
+ this.setAttr('smart', t.oldVal);
+ this.triggerChangeEvent();
+ }
+ }
+ }}
+ });
+
+ doc.startTransaction();
+ doc.root.smart('2');
+ doc.root.unaware('2');
+ doc.root.smart('3');
+ doc.root.unaware('3');
+ doc.endTransaction();
+
+ doc.undo();
+
+ expect(doc.root.getAttr('smart')).to.equal('1');
+ expect(doc.root.getAttr('unaware')).to.equal('1');
+ });
+
+ it('can have associated metadata', function() {
+ var doc = getDocumentFromXML('<div></div>'),
+ metadata = Object.create({});
+
+ doc.registerExtension({document: {transformations: {
+ test: function() {
+ this.trigger('change');
+ }
+ }}});
+
+ doc.startTransaction(metadata);
+ doc.test();
+ doc.endTransaction();
+
+ var transaction = doc.undoStack[0];
+ expect(transaction.metadata).to.equal(metadata);
+ });
+
+ it('can be rolled back', function() {
+ var doc = getDocumentFromXML('<root></root>');
+
+ doc.startTransaction();
+ doc.root.append({tagName: 'div'});
+ doc.rollbackTransaction();
+
+ expect(doc.undoStack.length).to.equal(0, 'nothing to undo');
+ expect(doc.root.contents().length).to.equal(0);
+ });
+
+ it('rollbacks and calls error handleor if error gets thrown', function() {
+ var doc = getDocumentFromXML('<root></root>'),
+ err = new Error(),
+ spy = sinon.spy();
+
+ doc.transaction(function() {
+ doc.root.append({tagName: 'div'});
+ throw err;
+ }, {error: spy});
+
+ expect(spy.args[0][0]).to.equal(err);
+ expect(doc.root.contents().length).to.equal(0);
+ expect(doc.undoStack.length).to.equal(0);
+ });
+ });
+
+ describe('Regression tests', function() {
+ it('redos correctly after running its own undo followed by unaware transformation undo', function() {
+ var doc = getDocumentFromXML('<section t="0"></section>');
+
+ doc.registerExtension({elementNode: {transformations: {
+ unaware: function() {
+ this.triggerChangeEvent();
+ },
+ test: {
+ impl: function() {
+ this._$.attr('t', 1);
+ this.triggerChangeEvent();
+ },
+ undo: function() {
+ this._$.attr('t', 0);
+ }
+ }
+ }}});
+ doc.root.unaware();
+ doc.root.test();
+ doc.undo();
+ doc.undo();
+ doc.redo();
+ doc.redo();
+ expect(doc.root.getAttr('t')).to.equal('1');
+ });
+ it('can perform undo of an operation performed after automatic transaction rollback', function() {
+ var doc = getDocumentFromXML('<section></section>'),
+ extension = {document: {transformations: {
+ throwingTransformation: function() { throw new Error(); }
+ }}};
+
+ doc.registerExtension(extension);
+
+ doc.throwingTransformation();
+
+ doc.transaction(function() {
+ doc.root.setAttr('x', '2');
+ });
+
+ expect(doc.undoStack.length).to.equal(1);
+ expect(doc.root.getAttr('x')).to.equal('2');
+
+ doc.undo();
+
+ expect(doc.undoStack.length).to.equal(0);
+ expect(doc.root.getAttr('x')).to.be.undefined;
+
+ });
+ });
fnp / fnpeditor.git / blobdiff