}

    def inNewThread(Closure closure) {
        def thread = new Thread(closure)
        thread.start()
        thread.join()
    }

    static class TestRegistry extends AbstractResourceLockRegistry<String, ResourceLock> {
        TestRegistry(ResourceLockCoordinationService coordinationService) {
            super(coordinationService)
        }

        def getResourceLock(String displayName) {

	if err != nil {
		return nil, err
	}
	return reg, nil
})

func TestRegistry(t test.Failer) prometheus.Gatherer {
	r, err := reg.Get()
	if err != nil {
		t.Fatal(err)
	}
	return r
}

func New(t test.Failer) *MetricsTest {
	r := TestRegistry(t)
	mt := &MetricsTest{t: t, reg: r, deltas: computeDeltas(t, r)}
	return mt
}