it('should dispose of the resources used by the list', () => {
let list = new ObservableUndoableList(serializer);
list.dispose();
expect(list.isDisposed).to.be(true);
list.dispose();
expect(list.isDisposed).to.be(true);
});
it('should redo a push', () => {
let list = new ObservableUndoableList(serializer);
list.push(serializer.fromJSON(value));
list.undo();
list.redo();
expect(list.length).to.be(1);
});
it('should undo a pushAll', () => {
let list = new ObservableUndoableList(serializer);
list.pushAll([serializer.fromJSON(value),
serializer.fromJSON(value)]);
list.undo();
expect(list.length).to.be(0);
});
it('should not be undoable if isUndoAble is set to false', () => {
let list = new ObservableUndoableList(serializer);
list.beginCompoundOperation(false);
list.push(serializer.fromJSON(value));
list.push(serializer.fromJSON(value));
list.endCompoundOperation();
expect(list.canUndo).to.be(false);
});
it('should undo a move', () => {
let items = [serializer.fromJSON(value),
serializer.fromJSON(value),
serializer.fromJSON(value)];
let list = new ObservableUndoableList(serializer);
list.pushAll(items);
list.move(1, 2);
list.undo();
expect((list.get(1) as any)['count']).to.be((items[1] as any)['count']);
});
it('should redo a removeRange', () => {
let list = new ObservableUndoableList(serializer);
list.pushAll([serializer.fromJSON(value),
serializer.fromJSON(value),
serializer.fromJSON(value),
serializer.fromJSON(value),
serializer.fromJSON(value),
serializer.fromJSON(value)]);
list.removeRange(1, 3);
list.undo();
list.redo();
expect(list.length).to.be(4);
});
it('should end a compound operation', () => {
let list = new ObservableUndoableList(serializer);
list.beginCompoundOperation();
list.push(serializer.fromJSON(value));
list.push(serializer.fromJSON(value));
list.endCompoundOperation();
expect(list.canUndo).to.be(true);
list.undo();
expect(list.canUndo).to.be(false);
});
it('should return true if there is a change that can be undone', () => {
let list = new ObservableUndoableList(serializer);
list.push(serializer.fromJSON(value));
expect(list.canUndo).to.be(true);
});
it('should return true if there is an undo that can be redone', () => {
let list = new ObservableUndoableList(serializer);
list.push(new Test(value));
list.undo();
expect(list.canRedo).to.be(true);
});
it('should clear the undo stack', () => {
let list = new ObservableUndoableList(serializer);
list.push(serializer.fromJSON(value));
list.clearUndo();
expect(list.canUndo).to.be(false);
});