@Test
public void testReconcilerAction() throws InterruptedException {

    newReconcilerWithRegistrations(
            dataBefore -> dataBefore.equals("a") ? Collections.singletonList(Mono.just(dataAfter -> "b")) : Collections.emptyList(),
            "r1", "a"
    );
    await().until(() -> reconciler.findById("r1").orElse("").equals("b"));
}