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CheckTypeParametersWhenResolvingObserversTest.java
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CheckTypeParametersWhenResolvingObserversTest.java
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/*
* Copyright 2010, Red Hat, Inc., and individual contributors
*
* 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.
*/
package org.jboss.cdi.tck.tests.event.resolve.typeWithParameters;
import static org.jboss.cdi.tck.cdi.Sections.BM_OBSERVER_METHOD_RESOLUTION;
import static org.jboss.cdi.tck.cdi.Sections.OBSERVERS_ASSIGNABILITY;
import static org.jboss.cdi.tck.cdi.Sections.OBSERVER_METHODS;
import static org.jboss.cdi.tck.tests.event.resolve.typeWithParameters.AbstractObserver.buildActionId;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertTrue;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.Set;
import jakarta.enterprise.context.Dependent;
import jakarta.enterprise.event.Event;
import jakarta.enterprise.event.Observes;
import jakarta.enterprise.inject.spi.ObserverMethod;
import jakarta.enterprise.util.TypeLiteral;
import jakarta.inject.Inject;
import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.cdi.tck.AbstractTest;
import org.jboss.cdi.tck.shrinkwrap.WebArchiveBuilder;
import org.jboss.cdi.tck.util.ActionSequence;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.jboss.test.audit.annotations.SpecAssertion;
import org.jboss.test.audit.annotations.SpecAssertions;
import org.jboss.test.audit.annotations.SpecVersion;
import org.testng.annotations.Test;
@SpecVersion(spec = "cdi", version = "2.0")
public class CheckTypeParametersWhenResolvingObserversTest extends AbstractTest {
@Deployment
public static WebArchive createTestArchive() {
return new WebArchiveBuilder().withTestClassPackage(CheckTypeParametersWhenResolvingObserversTest.class).build();
}
@Inject
Event<Box<Integer, String, Random>> event;
@Test
@SpecAssertions({ @SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "b"),
@SpecAssertion(section = BM_OBSERVER_METHOD_RESOLUTION, id = "a") })
public void testResolvingChecksTypeParameters() {
verifyObserver(new StringList(), 1, StringListObserver.class);
verifyObserver(new IntegerList(), 1, IntegerListObserver.class);
verifyObserver(new CharacterList(), 0);
}
@Test
@SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "b")
public void testParameterizedEventTypeAssignableToRawType() {
Box<Integer, String, Random> box = new Box<Integer, String, Random>();
event.fire(box);
assertTrue(RawTypeObserver.OBSERVED);
verifyObserver(new RawTypeObserver.BoxWithDifferentTypeParameters(), 1, RawTypeObserver.class);
verifyObserver(new RawTypeObserver.BoxWithObjectTypeParameters(), 1, RawTypeObserver.class);
}
@Test
@SpecAssertions({ @SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "c"),
@SpecAssertion(section = OBSERVER_METHODS, id = "ab") })
public void testObservedEventTypeParameterIsActualType() {
ActionSequence.reset();
Foo<String> fooString = new Foo.FooString();
verifyObserver(fooString, 1, FooObserver.class);
getCurrentManager().getEvent().select(new TypeLiteral<Foo<String>>() {
}).fire(fooString);
verifyEvent(FooObserver.SEQUENCE, 1, buildActionId(FooObserver.class, fooString));
}
@Test
@SpecAssertions({ @SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "d") })
public void testObservedEventTypeParameterIsActualTypeNested() {
ActionSequence.reset();
Foo<List<String>> fooStringList = new Foo.FooStringList();
verifyObserver(fooStringList, 1, FooObserver.class);
getCurrentManager().getEvent().select(new TypeLiteral<Foo<List<String>>>() {
}).fire(fooStringList);
verifyEvent(FooObserver.SEQUENCE_NESTED, 1, buildActionId(FooObserver.class, fooStringList));
}
@Test
@SpecAssertions({ @SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "e") })
public void testObservedEventTypeParameterIsWildcard() {
ActionSequence.reset();
Qux<String> quxString = new Qux.QuxString();
Qux<List<String>> quxStringList = new Qux.QuxStringList();
Qux<Number> quxNumber = new Qux.QuxNumber();
verifyObserver(quxString, 1, WildcardObserver.class);
verifyObserver(quxNumber, 2, WildcardObserver.class);
verifyObserver(quxStringList, 2, WildcardObserver.class);
getCurrentManager().getEvent().select(new TypeLiteral<Qux<String>>() {
}).fire(quxString);
getCurrentManager().getEvent().select(new TypeLiteral<Qux<List<String>>>() {
}).fire(quxStringList);
getCurrentManager().getEvent().select(new TypeLiteral<Qux<Number>>() {
}).fire(quxNumber);
verifyEvent(WildcardObserver.SEQUENCE, 3, buildActionId(WildcardObserver.class, quxString),
buildActionId(WildcardObserver.class, quxStringList), buildActionId(WildcardObserver.class, quxNumber));
verifyEvent(WildcardObserver.SEQUENCE_LOWER, 1, buildActionId(WildcardObserver.class, quxNumber));
verifyEvent(WildcardObserver.SEQUENCE_UPPER, 1, buildActionId(WildcardObserver.class, quxStringList));
}
@Test
@SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "f")
public void testObservedEventTypeParameterIsTypeVariable() {
ActionSequence.reset();
Duck<String> duckString = new Duck.DuckString();
Duck<Integer> duckInteger = new Duck.DuckInteger();
verifyObserver(duckString, 1, TypeVariableObserver.class);
verifyObserver(duckInteger, 2, TypeVariableObserver.class);
getCurrentManager().getEvent().select(new TypeLiteral<Duck<String>>() {
}).fire(duckString);
getCurrentManager().getEvent().select(new TypeLiteral<Duck<Integer>>() {
}).fire(duckInteger);
verifyEvent(TypeVariableObserver.SEQUENCE_TYPE_VAR, 2, buildActionId(TypeVariableObserver.class, duckString),
buildActionId(TypeVariableObserver.class, duckInteger));
verifyEvent(TypeVariableObserver.SEQUENCE_TYPE_VAR_UPPER, 1, buildActionId(TypeVariableObserver.class, duckInteger));
}
@Test
@SpecAssertion(section = OBSERVERS_ASSIGNABILITY, id = "a")
public void testEventTypeAssignableToATypeVariable() {
ActionSequence.reset();
Bar bar = new Bar();
Baz baz = new Baz();
verifyObserver(bar, 1, TypeVariableObserver.class);
verifyObserver(baz, 1, TypeVariableObserver.class);
getCurrentManager().getEvent().select(Bar.class).fire(new Bar());
getCurrentManager().getEvent().select(Baz.class).fire(new Baz());
getCurrentManager().getEvent().select(StringList.class).fire(new StringList());
verifyEvent(TypeVariableObserver.SEQUENCE_UPPER, 2, buildActionId(TypeVariableObserver.class, bar),
buildActionId(TypeVariableObserver.class, baz));
}
/**
* Quick and dirty test for various event type resolution use cases.
*/
@Test
public void testEventTypeResolution() {
int expectedMatches = 5;
Dog<?, ?> dogStringNumber = new Dog.DogStringNumber();
verifyObserver(dogStringNumber, expectedMatches, DogObserver.class);
getCurrentManager().getEvent().select(new TypeLiteral<Dog<?, ?>>() {
}).fire(dogStringNumber);
verifyEvent(DogObserver.SEQUENCE, expectedMatches);
}
public static class CharacterList extends ArrayList<Character> {
private static final long serialVersionUID = 1L;
}
public static class StringList extends ArrayList<String> {
private static final long serialVersionUID = 1L;
}
public static class IntegerList extends ArrayList<Integer> {
private static final long serialVersionUID = 1L;
}
@Dependent
public static class StringListObserver {
public boolean wasNotified = false;
public void observer(@Observes ArrayList<String> event) {
wasNotified = true;
}
}
@Dependent
public static class IntegerListObserver {
public boolean wasNotified = false;
public void observer(@Observes ArrayList<Integer> event) {
wasNotified = true;
}
}
private void verifyObserver(Object event, int expectedNumberOfObservers, Class<?>... expectedObserverTypes) {
if (expectedNumberOfObservers < expectedObserverTypes.length) {
throw new IllegalArgumentException("Invalid expected arguments");
}
Set<ObserverMethod<? super Object>> observers = getCurrentManager().resolveObserverMethods(event);
assertEquals(observers.size(), expectedNumberOfObservers);
List<Class<?>> observerTypes = Arrays.asList(expectedObserverTypes);
for (ObserverMethod<? super Object> observer : observers) {
assertTrue(observerTypes.contains(observer.getBeanClass()));
}
}
/**
* @param sequenceName
* @param expectedSequenceSize
* @param actions Sequence data must contain all specified actions
*/
private void verifyEvent(String sequenceName, int expectedSequenceSize, String... actions) {
List<String> sequenceData = ActionSequence.getSequenceData(sequenceName);
assertNotNull(sequenceData);
assertEquals(sequenceData.size(), expectedSequenceSize);
for (String action : actions) {
assertTrue(sequenceData.contains(action));
}
}
}