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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018, 2020-2021 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2024 Nordix Foundation.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.core;
import static org.assertj.core.api.Assertions.assertThatCode;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.util.concurrent.Semaphore;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.kie.api.event.rule.AgendaEventListener;
import org.kie.api.event.rule.RuleRuntimeEventListener;
import org.kie.api.runtime.KieSession;
import org.onap.policy.drools.core.PolicySession.ThreadModel;
class PolicySessionTest {
private static final String MY_NAME = "my-name";
private static final String CONTAINER = "my-container";
private static final String EXPECTED = null;
private PolicySession session;
private PolicyContainer container;
private KieSession kie;
/**
* Initialize test objects.
*/
@BeforeEach
public void setUp() {
container = mock(PolicyContainer.class);
kie = mock(KieSession.class);
when(container.getName()).thenReturn(CONTAINER);
session = new PolicySession(MY_NAME, container, kie);
}
@Test
void test_Simple() {
// verify constructor operations
AgendaEventListener agenda = session;
verify(kie).addEventListener(agenda);
RuleRuntimeEventListener rule = session;
verify(kie).addEventListener(rule);
// test other simple methods
assertEquals(container, session.getContainer());
assertEquals(kie, session.getKieSession());
assertEquals(MY_NAME, session.getName());
assertEquals(CONTAINER + ":" + MY_NAME, session.getFullName());
session.stopThread();
session.updated();
session.afterRuleFlowGroupActivated(null);
session.afterRuleFlowGroupDeactivated(null);
session.agendaGroupPopped(null);
session.agendaGroupPushed(null);
session.beforeMatchFired(null);
session.beforeRuleFlowGroupActivated(null);
session.beforeRuleFlowGroupDeactivated(null);
session.matchCancelled(null);
session.matchCreated(null);
session.objectDeleted(null);
session.objectInserted(null);
session.objectUpdated(null);
}
@Test
void testStartThread() {
session.startThread();
// re-start
session.startThread();
assertThatCode(() -> session.stopThread()).doesNotThrowAnyException();
}
@Test
void testSetPolicySession_testGetCurrentSession_testRemovePolicySession() {
PolicySession sess2 = new PolicySession(MY_NAME + "-b", container, kie);
session.setPolicySession();
assertEquals(session, PolicySession.getCurrentSession());
sess2.setPolicySession();
assertEquals(sess2, PolicySession.getCurrentSession());
// remove a different session - should be unchanged
session.removePolicySession();
assertEquals(sess2, PolicySession.getCurrentSession());
// remove the session
sess2.removePolicySession();
assertNull(PolicySession.getCurrentSession());
}
@Test
void testGetAdjunct_testSetAdjunct() {
Object adjnm1 = "adjunct-a";
Object adjval1 = "value-a";
session.setAdjunct(adjnm1, adjval1);
Object adjnm2 = "adjunct-b";
Object adjval2 = "value-b";
session.setAdjunct(adjnm2, adjval2);
assertEquals(adjval1, session.getAdjunct(adjnm1));
assertEquals(adjval2, session.getAdjunct(adjnm2));
assertNull(session.getAdjunct("unknown-adjunct"));
}
@Test
void testThreadModel() {
ThreadModel model = new PolicySession.ThreadModel() {
@Override
public void stop() {
// do nothing
}
@Override
public void start() {
// do nothing
}
};
assertThatCode(model::updated).doesNotThrowAnyException();
}
@Test
void testDefaultThreadModelRun() throws Exception {
testDefaultThreadModelRun_Ex(() -> {
throw new RuntimeException(EXPECTED);
});
testDefaultThreadModelRun_Ex(() -> {
throw new LinkageError(EXPECTED);
});
}
/**
* Starts a thread and then invokes a function to generate an exception within the
* fireUntilHalt() method.
*
* @param genEx function to generate an exception
* @throws Exception if an error occurs
*/
private void testDefaultThreadModelRun_Ex(Runnable genEx) throws Exception {
Semaphore me = new Semaphore(0);
Semaphore thread = new Semaphore(0);
doAnswer(args -> {
// let me know the thread has started
me.release(1);
// wait until I tell it to continue
thread.acquire();
// generate the exception
genEx.run();
// never reaches here
return null;
}).when(kie).fireUntilHalt();
session.startThread();
me.acquire();
thread.release();
session.stopThread();
}
}
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