@Test(expected = WebApplicationException.class)
public void testAddUnauthorizedOwner() throws Exception {

	File file = fileService.createFile("f1", "jpg", "f1", 99);
	// switch user
	requestMock = new HttpServletRequestMock(simpleUser2);
	fileService.request = requestMock;
	fileService.addOwners(file.getId(), new Owner[] { new Owner(simpleUser2) });
}