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org.picocontainer.defaults.CollectionComponentParameterTestCase Maven / Gradle / Ivy
/*****************************************************************************
* Copyright (C) PicoContainer Organization. All rights reserved. *
* ------------------------------------------------------------------------- *
* The software in this package is published under the terms of the BSD *
* style license a copy of which has been included with this distribution in *
* the LICENSE.txt file. *
* *
* Original code by *
*****************************************************************************/
package org.picocontainer.defaults;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.picocontainer.tck.MockFactory.mockeryWithCountingNamingScheme;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.jmock.integration.junit4.JMock;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.picocontainer.ComponentAdapter;
import org.picocontainer.DefaultPicoContainer;
import org.picocontainer.MutablePicoContainer;
import org.picocontainer.PicoCompositionException;
import org.picocontainer.PicoContainer;
import org.picocontainer.adapters.InstanceAdapter;
import org.picocontainer.behaviors.Caching;
import org.picocontainer.injectors.AbstractInjector;
import org.picocontainer.injectors.ConstructorInjector;
import org.picocontainer.lifecycle.NullLifecycleStrategy;
import org.picocontainer.monitors.NullComponentMonitor;
import org.picocontainer.parameters.CollectionComponentParameter;
import org.picocontainer.parameters.ComponentParameter;
import org.picocontainer.testmodel.SimpleTouchable;
import org.picocontainer.testmodel.Touchable;
/**
* @author Aslak Hellesøy
* @author Jörg Schaible
* @author Mauro Talevi
*/
@RunWith(JMock.class)
public class CollectionComponentParameterTestCase {
private Mockery mockery = mockeryWithCountingNamingScheme();
@Test
public void testShouldInstantiateArrayOfStrings() {
CollectionComponentParameter ccp = new CollectionComponentParameter();
final ComponentAdapter componentAdapter = mockery
.mock(ComponentAdapter.class);
final PicoContainer picoContainer = mockery.mock(PicoContainer.class);
mockery.checking(new Expectations() {
{
atLeast(1).of(componentAdapter).getComponentKey();
will(returnValue("x"));
one(picoContainer).getComponentAdapters();
will(returnValue(new HashSet()));
one(picoContainer).getComponentAdapters(
with(equal(String.class)));
will(returnValue(Arrays.asList(new InstanceAdapter("y",
"Hello", new NullLifecycleStrategy(),
new NullComponentMonitor()), new InstanceAdapter("z",
"World", new NullLifecycleStrategy(),
new NullComponentMonitor()))));
one(picoContainer).getComponent(with(equal("z")));
will(returnValue("World"));
one(picoContainer).getComponent(with(equal("y")));
will(returnValue("Hello"));
one(picoContainer).getParent();
will(returnValue(null));
}
});
List expected = Arrays.asList("Hello", "World");
Collections.sort(expected);
List actual = Arrays.asList((Object[]) ccp.resolveInstance(
picoContainer, componentAdapter, String[].class,
null, false, null));
Collections.sort(actual);
assertEquals(expected, actual);
}
static public interface Fish {
}
static public class Cod implements Fish {
public String toString() {
return "Cod";
}
}
static public class Shark implements Fish {
public String toString() {
return "Shark";
}
}
static public class Bowl {
private final Cod[] cods;
private final Fish[] fishes;
public Bowl(Cod cods[], Fish fishes[]) {
this.cods = cods;
this.fishes = fishes;
}
}
private MutablePicoContainer getDefaultPicoContainer() {
MutablePicoContainer mpc = new DefaultPicoContainer(new Caching());
mpc.addComponent(Bowl.class);
mpc.addComponent(Cod.class);
mpc.addComponent(Shark.class);
return mpc;
}
@Test
public void testNativeArrays() {
MutablePicoContainer mpc = getDefaultPicoContainer();
Cod cod = mpc.getComponent(Cod.class);
Bowl bowl = mpc.getComponent(Bowl.class);
assertEquals(1, bowl.cods.length);
assertEquals(2, bowl.fishes.length);
assertSame(cod, bowl.cods[0]);
assertNotSame(bowl.fishes[0], bowl.fishes[1]);
}
@Test
public void testCollectionsAreGeneratedOnTheFly() {
MutablePicoContainer mpc = new DefaultPicoContainer();
mpc
.addAdapter(new ConstructorInjector(Bowl.class, Bowl.class,
null, new NullComponentMonitor(),
new NullLifecycleStrategy(), false));
mpc.addComponent(Cod.class);
Bowl bowl = mpc.getComponent(Bowl.class);
assertEquals(1, bowl.cods.length);
mpc.addComponent("Nemo", new Cod());
bowl = mpc.getComponent(Bowl.class);
assertEquals(2, bowl.cods.length);
assertNotSame(bowl.cods[0], bowl.cods[1]);
}
static public class CollectedBowl {
private final Cod[] cods;
private final Fish[] fishes;
public CollectedBowl(Collection cods, Collection fishes) {
this.cods = (Cod[]) cods.toArray(new Cod[cods.size()]);
this.fishes = (Fish[]) fishes.toArray(new Fish[fishes.size()]);
}
}
@Test
public void testCollections() {
MutablePicoContainer mpc = new DefaultPicoContainer(new Caching());
mpc.addComponent(CollectedBowl.class, CollectedBowl.class,
new ComponentParameter(Cod.class, false),
new ComponentParameter(Fish.class, false));
mpc.addComponent(Cod.class);
mpc.addComponent(Shark.class);
Cod cod = mpc.getComponent(Cod.class);
CollectedBowl bowl = mpc.getComponent(CollectedBowl.class);
assertEquals(1, bowl.cods.length);
assertEquals(2, bowl.fishes.length);
assertSame(cod, bowl.cods[0]);
assertNotSame(bowl.fishes[0], bowl.fishes[1]);
}
static public class MappedBowl {
private final Fish[] fishes;
public MappedBowl(Map map) {
Collection collection = map.values();
this.fishes = (Fish[]) collection.toArray(new Fish[collection
.size()]);
}
}
@Test
public void testMaps() {
MutablePicoContainer mpc = new DefaultPicoContainer();
mpc.addComponent(MappedBowl.class, MappedBowl.class,
new ComponentParameter(Fish.class, false));
mpc.addComponent(Cod.class);
mpc.addComponent(Shark.class);
MappedBowl bowl = mpc.getComponent(MappedBowl.class);
assertEquals(2, bowl.fishes.length);
assertNotSame(bowl.fishes[0], bowl.fishes[1]);
}
public static class UngenericCollectionBowl {
public UngenericCollectionBowl(Collection fish) {
}
}
@Test
public void testShouldNotInstantiateCollectionForUngenericCollectionParameters() {
MutablePicoContainer pico = getDefaultPicoContainer();
pico.addComponent(UngenericCollectionBowl.class);
try {
pico.getComponent(UngenericCollectionBowl.class);
fail();
} catch (AbstractInjector.UnsatisfiableDependenciesException e) {
// expected
}
}
public static class AnotherGenericCollectionBowl {
private final String[] strings;
public AnotherGenericCollectionBowl(String[] strings) {
this.strings = strings;
}
public String[] getStrings() {
return strings;
}
}
@Test
public void testShouldFailWhenThereAreNoComponentsToPutInTheArray() {
MutablePicoContainer pico = getDefaultPicoContainer();
pico.addComponent(AnotherGenericCollectionBowl.class);
try {
pico.getComponent(AnotherGenericCollectionBowl.class);
fail();
} catch (AbstractInjector.UnsatisfiableDependenciesException e) {
// expected
}
}
@Test
public void testAllowsEmptyArraysIfEspeciallySet() {
MutablePicoContainer pico = getDefaultPicoContainer();
pico.addComponent(AnotherGenericCollectionBowl.class,
AnotherGenericCollectionBowl.class,
ComponentParameter.ARRAY_ALLOW_EMPTY);
AnotherGenericCollectionBowl bowl = pico
.getComponent(AnotherGenericCollectionBowl.class);
assertNotNull(bowl);
assertEquals(0, bowl.strings.length);
}
public static class TouchableObserver implements Touchable {
private final Touchable[] touchables;
public TouchableObserver(Touchable[] touchables) {
this.touchables = touchables;
}
public void touch() {
for (Touchable touchable : touchables) {
touchable.touch();
}
}
}
@Test
public void testWillOmitSelfFromCollection() {
MutablePicoContainer pico = getDefaultPicoContainer();
pico.addComponent(SimpleTouchable.class);
pico.addComponent(TouchableObserver.class);
Touchable observer = pico.getComponent(TouchableObserver.class);
assertNotNull(observer);
observer.touch();
SimpleTouchable touchable = pico.getComponent(SimpleTouchable.class);
assertTrue(touchable.wasTouched);
}
@Test
public void testWillRemoveComponentsWithMatchingKeyFromParent() {
MutablePicoContainer parent = new DefaultPicoContainer();
parent.addComponent("Tom", Cod.class);
parent.addComponent("Dick", Cod.class);
parent.addComponent("Harry", Cod.class);
MutablePicoContainer child = new DefaultPicoContainer(parent);
child.addComponent("Dick", Shark.class);
child.addComponent(Bowl.class);
Bowl bowl = child.getComponent(Bowl.class);
assertEquals(3, bowl.fishes.length);
assertEquals(2, bowl.cods.length);
}
@Test
public void testBowlWithoutTom() {
MutablePicoContainer mpc = new DefaultPicoContainer();
mpc.addComponent("Tom", Cod.class);
mpc.addComponent("Dick", Cod.class);
mpc.addComponent("Harry", Cod.class);
mpc.addComponent(Shark.class);
mpc.addComponent(CollectedBowl.class, CollectedBowl.class,
new CollectionComponentParameter(Cod.class, false) {
protected boolean evaluate(ComponentAdapter adapter) {
return !"Tom".equals(adapter.getComponentKey());
}
}, new CollectionComponentParameter(Fish.class, false));
CollectedBowl bowl = mpc.getComponent(CollectedBowl.class);
Cod tom = (Cod) mpc.getComponent("Tom");
assertEquals(4, bowl.fishes.length);
assertEquals(2, bowl.cods.length);
assertFalse(Arrays.asList(bowl.cods).contains(tom));
}
public static class DependsOnAll {
public DependsOnAll(Set set, SortedSet sortedSet,
Collection collection, List list, SortedMap sortedMap, Map map
// , ConcurrentMap concurrentMap, Queue queue, BlockingQueue
// blockingQueue
) {
assertNotNull(set);
assertNotNull(sortedSet);
assertNotNull(collection);
assertNotNull(list);
assertNotNull(sortedMap);
assertNotNull(map);
// assertNotNull(concurrentMap);
// assertNotNull(queue);
// assertNotNull(blockingQueue);
}
}
@Test
public void testDifferentCollectiveTypesAreResolved() {
MutablePicoContainer pico = new DefaultPicoContainer();
CollectionComponentParameter parameter = new CollectionComponentParameter(
Fish.class, true);
pico.addComponent(DependsOnAll.class, DependsOnAll.class, parameter,
parameter, parameter, parameter, parameter, parameter);
assertNotNull(pico.getComponent(DependsOnAll.class));
}
@Test
public void testVerify() {
MutablePicoContainer pico = new DefaultPicoContainer();
CollectionComponentParameter parameterNonEmpty = CollectionComponentParameter.ARRAY;
pico.addComponent(Shark.class);
parameterNonEmpty.verify(pico, null, Fish[].class, null, false, null);
try {
parameterNonEmpty
.verify(pico, null, Cod[].class, null, false, null);
fail("(PicoCompositionException expected");
} catch (PicoCompositionException e) {
assertTrue(e.getMessage().indexOf(Cod.class.getName()) > 0);
}
CollectionComponentParameter parameterEmpty = CollectionComponentParameter.ARRAY_ALLOW_EMPTY;
parameterEmpty.verify(pico, null, Fish[].class, null, false, null);
parameterEmpty.verify(pico, null, Cod[].class, null, false, null);
}
// PICO-243 : this test will fail if executed on jdk1.3 without
// commons-collections
@Test
public void testOrderOfElementsOfAnArrayDependencyIsPreserved() {
MutablePicoContainer pico = new DefaultPicoContainer();
pico.addComponent("first", "first");
pico.addComponent("second", "second");
pico.addComponent("third", "third");
pico.addComponent("fourth", "fourth");
pico.addComponent("fifth", "fifth");
pico.addComponent(Truc.class);
final List strings = pico.getComponents(String.class);
assertEquals("first", strings.get(0));
assertEquals("second", strings.get(1));
assertEquals("third", strings.get(2));
assertEquals("fourth", strings.get(3));
assertEquals("fifth", strings.get(4));
pico.getComponent(Truc.class);
}
public static final class Truc {
public Truc(String[] s) {
assertEquals("first", s[0]);
assertEquals("second", s[1]);
assertEquals("third", s[2]);
assertEquals("fourth", s[3]);
assertEquals("fifth", s[4]);
}
}
}
