There is a strategy using calendar news from ForexFactory.com to trade.
The strategy was inspired by the indicators:
ForexFactory Calendar
Forex Factory News Feed
The idea is to wait for news then place OCO order for the affected instrument to buy or sell and close the position by stop or limit.
The strategy in general downloads the calendar from ForexFactory website but to optimize/backtest can accept a file via parameters (the file containing the calendar needs to be downloaded manually).
There is an optimization picture:
And a backtesting picture: