使用Robolectric和Gradle测试资源文件夹

I want to add some test files to my test folder because I want to simulate some JSON file loading. The problem is that last Robolectric version (2.4) looks like it doesn't find the test-resources path (I get a NPE), but with Robolectric 2.3 it does.I want to add some test files to my test folder