package org.multiverse.stms.gamma.transactions.fat;
import org.junit.Before;
import org.junit.Test;
import org.multiverse.api.exceptions.DeadTxnException;
import org.multiverse.api.exceptions.PreparedTxnException;
import org.multiverse.api.lifecycle.TxnListener;
import org.multiverse.stms.gamma.GammaStm;
import org.multiverse.stms.gamma.transactions.GammaTxn;
import java.util.Arrays;
import static org.junit.Assert.*;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verifyZeroInteractions;
import static org.multiverse.TestUtils.*;
public abstract class FatGammaTxn_registerTest<T extends GammaTxn> {
protected GammaStm stm;
@Before
public void setUp() {
stm = new GammaStm();
}
protected abstract T newTransaction();
@Test
public void whenNullListener_thenNullPointerException() {
T tx = newTransaction();
try {
tx.register(null);
fail();
} catch (NullPointerException expected) {
}
assertIsAborted(tx);
}
@Test
public void whenSuccess() {
T tx = newTransaction();
TxnListener listener = mock(TxnListener.class);
tx.register(listener);
assertIsActive(tx);
assertNotNull(tx.listeners);
assertEquals(Arrays.asList(listener), tx.listeners);
verifyZeroInteractions(listener);
}
@Test
public void whenMultpleListeners() {
T tx = newTransaction();
TxnListener listener1 = mock(TxnListener.class);
TxnListener listener2 = mock(TxnListener.class);
TxnListener listener3 = mock(TxnListener.class);
tx.register(listener1);
tx.register(listener2);
tx.register(listener3);
assertIsActive(tx);
assertNotNull(tx.listeners);
assertEquals(Arrays.asList(listener1, listener2, listener3), tx.listeners);
verifyZeroInteractions(listener1);
verifyZeroInteractions(listener2);
verifyZeroInteractions(listener3);
}
@Test
public void whenSameListenerAddedMultipleTimes() {
T tx = newTransaction();
TxnListener listener = mock(TxnListener.class);
tx.register(listener);
tx.register(listener);
assertIsActive(tx);
assertNotNull(tx.listeners);
assertEquals(Arrays.asList(listener, listener), tx.listeners);
verifyZeroInteractions(listener);
}
@Test
public void whenAlreadyPrepared() {
T tx = newTransaction();
tx.prepare();
TxnListener listener = mock(TxnListener.class);
try {
tx.register(listener);
fail();
} catch (PreparedTxnException expected) {
}
assertIsAborted(tx);
verifyZeroInteractions(listener);
}
@Test
public void whenAlreadyAborted() {
T tx = newTransaction();
tx.abort();
TxnListener listener = mock(TxnListener.class);
try {
tx.register(listener);
fail();
} catch (DeadTxnException expected) {
}
assertIsAborted(tx);
verifyZeroInteractions(listener);
}
@Test
public void whenAlreadyCommitted() {
T tx = newTransaction();
tx.commit();
TxnListener listener = mock(TxnListener.class);
try {
tx.register(listener);
fail();
} catch (DeadTxnException expected) {
}
assertIsCommitted(tx);
verifyZeroInteractions(listener);
}
}