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package dev.openfeature.sdk;
import static org.mockito.Mockito.doNothing;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.function.Consumer;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.parallel.Isolated;
import dev.openfeature.sdk.internal.AutoCloseableReentrantReadWriteLock;
@Isolated()
class LockingTest {
private static OpenFeatureAPI api;
private OpenFeatureClient client;
private AutoCloseableReentrantReadWriteLock apiLock;
private AutoCloseableReentrantReadWriteLock clientContextLock;
private AutoCloseableReentrantReadWriteLock clientHooksLock;
@BeforeAll
static void beforeAll() {
api = OpenFeatureAPI.getInstance();
OpenFeatureAPI.getInstance().setProvider("LockingTest", new NoOpProvider());
}
@BeforeEach
void beforeEach() {
client = (OpenFeatureClient) api.getClient("LockingTest");
apiLock = setupLock(apiLock, mockInnerReadLock(), mockInnerWriteLock());
OpenFeatureAPI.lock = apiLock;
clientContextLock = setupLock(clientContextLock, mockInnerReadLock(), mockInnerWriteLock());
clientHooksLock = setupLock(clientHooksLock, mockInnerReadLock(), mockInnerWriteLock());
client.contextLock = clientContextLock;
client.hooksLock = clientHooksLock;
}
@Nested
class EventsLocking {
@Nested
class Api {
@Test
void onShouldWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.on(ProviderEvent.PROVIDER_READY, handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderReadyShouldWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderReady(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderConfigurationChangedShouldWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderConfigurationChanged(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderStaleShouldWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderStale(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderErrorShouldWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderError(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
}
@Nested
class Client {
// Note that the API lock is used for adding client handlers, they are all added (indirectly) on the API object.
@Test
void onShouldApiWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
client.on(ProviderEvent.PROVIDER_READY, handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderReadyShouldApiWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderReady(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderConfigurationChangedProviderReadyShouldApiWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderConfigurationChanged(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderStaleProviderReadyShouldApiWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderStale(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void onProviderErrorProviderReadyShouldApiWriteLockAndUnlock() {
Consumer handler = mock(Consumer.class);
api.onProviderError(handler);
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
}
}
@Test
void addHooksShouldWriteLockAndUnlock() {
client.addHooks(new Hook() {
});
verify(clientHooksLock.writeLock()).lock();
verify(clientHooksLock.writeLock()).unlock();
api.addHooks(new Hook() {
});
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void getHooksShouldReadLockAndUnlock() {
client.getHooks();
verify(clientHooksLock.readLock()).lock();
verify(clientHooksLock.readLock()).unlock();
api.getHooks();
verify(apiLock.readLock()).lock();
verify(apiLock.readLock()).unlock();
}
@Test
void setContextShouldWriteLockAndUnlock() {
client.setEvaluationContext(new ImmutableContext());
verify(clientContextLock.writeLock()).lock();
verify(clientContextLock.writeLock()).unlock();
api.setEvaluationContext(new ImmutableContext());
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void getContextShouldReadLockAndUnlock() {
client.getEvaluationContext();
verify(clientContextLock.readLock()).lock();
verify(clientContextLock.readLock()).unlock();
api.getEvaluationContext();
verify(apiLock.readLock()).lock();
verify(apiLock.readLock()).unlock();
}
@Test
void setTransactionalContextPropagatorShouldWriteLockAndUnlock() {
api.setTransactionContextPropagator(new NoOpTransactionContextPropagator());
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
@Test
void getTransactionalContextPropagatorShouldReadLockAndUnlock() {
api.getTransactionContextPropagator();
verify(apiLock.readLock()).lock();
verify(apiLock.readLock()).unlock();
}
@Test
void clearHooksShouldWriteLockAndUnlock() {
api.clearHooks();
verify(apiLock.writeLock()).lock();
verify(apiLock.writeLock()).unlock();
}
private static ReentrantReadWriteLock.ReadLock mockInnerReadLock() {
ReentrantReadWriteLock.ReadLock readLockMock = mock(ReentrantReadWriteLock.ReadLock.class);
doNothing().when(readLockMock).lock();
doNothing().when(readLockMock).unlock();
return readLockMock;
}
private static ReentrantReadWriteLock.WriteLock mockInnerWriteLock() {
ReentrantReadWriteLock.WriteLock writeLockMock = mock(ReentrantReadWriteLock.WriteLock.class);
doNothing().when(writeLockMock).lock();
doNothing().when(writeLockMock).unlock();
return writeLockMock;
}
private AutoCloseableReentrantReadWriteLock setupLock(AutoCloseableReentrantReadWriteLock lock,
AutoCloseableReentrantReadWriteLock.ReadLock readlock,
AutoCloseableReentrantReadWriteLock.WriteLock writeLock) {
lock = mock(AutoCloseableReentrantReadWriteLock.class);
when(lock.readLockAutoCloseable()).thenCallRealMethod();
when(lock.readLock()).thenReturn(readlock);
when(lock.writeLockAutoCloseable()).thenCallRealMethod();
when(lock.writeLock()).thenReturn(writeLock);
return lock;
}
}