b.setScm(new SubversionSCM(Arrays.asList(locations), new CheckoutUpdater(), null, null, null, null, null, null));
FreeStyleBuild build = assertBuildStatusSuccess(b.scheduleBuild2(0));
FilePath ws = build.getWorkspace();
assertEquals(ws.child("z").child("a").readToString(),"za 2\n");
assertEquals(ws.child("y").child("z").child("a").readToString(),"za 1\n");
assertEquals(b.poll(StreamTaskListener.fromStdout()).change, PollingResult.Change.NONE);
} finally {
p.kill();