message: bind the new method
diff: @@ -15,6 +15,7 @@ export default class TestCase {
  this.removeCommand = this.removeCommand.bind(this);
  this.insertCommandAt = this.insertCommandAt.bind(this);
  this.swapCommands = this.swapCommands.bind(this);
  + this.clearAllCommands = this.clearAllCommands.bind(this);
  }
  @action setName(name) {
  