/*******************************************************************************
* Copyright (c) 2010-present Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Stuart McCulloch (Sonatype, Inc.) - initial API and implementation
*******************************************************************************/
package org.eclipse.sisu.wire;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import javax.inject.Inject;
import javax.inject.Named;
import org.eclipse.sisu.BeanEntry;
import org.eclipse.sisu.Dynamic;
import org.eclipse.sisu.Nullable;
import org.eclipse.sisu.inject.BeanLocator;
import org.eclipse.sisu.inject.MutableBeanLocator;
import org.eclipse.sisu.inject.Sources;
import org.eclipse.sisu.inject.TypeArguments;
import org.eclipse.sisu.space.ClassSpace;
import org.eclipse.sisu.space.URLClassSpace;
import com.google.inject.AbstractModule;
import com.google.inject.Binder;
import com.google.inject.BindingAnnotation;
import com.google.inject.CreationException;
import com.google.inject.Guice;
import com.google.inject.ImplementedBy;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.ProvidedBy;
import com.google.inject.Provider;
import com.google.inject.ProvisionException;
import com.google.inject.TypeLiteral;
import com.google.inject.matcher.Matchers;
import com.google.inject.name.Names;
import junit.framework.TestCase;
public class BeanImportTest
extends TestCase
{
@Target( FIELD )
@Retention( RUNTIME )
@BindingAnnotation
public @interface Fuzzy
{
}
static class FuzzyImpl
implements Fuzzy
{
public Class<? extends Annotation> annotationType()
{
return Fuzzy.class;
}
@Override
public boolean equals( final Object rhs )
{
return rhs instanceof Fuzzy;
}
@Override
public int hashCode()
{
return 0;
}
}
interface X
{
}
public interface Y
{
double fn( double x, double y );
}
interface Z<T>
{
}
@ProvidedBy( XProvider.class )
interface ImplicitX
extends X
{
}
@ImplementedBy( YImpl.class )
public interface ImplicitY
extends Y
{
}
static class XProvider
implements Provider<ImplicitX>
{
public ImplicitX get()
{
return new ImplicitX()
{
};
}
}
@Named( "CustomName" )
public static class ImplWithName
{
}
public static abstract class AbstractY
implements Y
{
public double fn( final double x, final double y )
{
return x + y;
}
}
public static class YImpl
extends AbstractY
implements ImplicitY
{
}
static class ZImpl<T>
implements Z<T>
{
T element;
}
static abstract class AbstractX
implements X
{
@Inject
Injector injector;
// @Inject
// Logger logger;
@Inject
ImplicitX implicitX;
@Inject
ImplicitY implicitY;
@Inject
YImpl concreteY;
@Inject
@Nullable
AbstractY abstractY;
@Inject
@Fuzzy
Y fuzzy;
@Inject
@Named( "fixed" )
Y fixed;
@Inject
@Named( "CustomName" )
ImplWithName implWithName;
@Inject
Map<Annotation, Y> annotatedMap;
@Inject
Map<Named, Y> namedMap;
@Inject
Map<Named, Provider<Y>> namedProviderMap;
}
static class UnrestrictedInstance
extends AbstractX
{
final Y single;
@Inject
UnrestrictedInstance( @Nullable final Y single, @Named( "fixed" ) final Y fixed )
{
this.single = single;
this.fixed = fixed;
}
}
static class UnrestrictedList
extends AbstractX
{
@Inject
List<Y> list;
@Inject
Collection<Y> coll;
@Inject
Iterable<Y> iterable;
@Inject
List<Provider<Y>> providerList;
}
static class UnrestrictedSet
extends AbstractX
{
@Inject
Set<Y> set;
@Inject
Set<Provider<Y>> providerSet;
}
static class NamedType
extends AbstractX
{
final Y single;
@Inject
NamedType( @Named( "fixed" ) final Y fixed, @Nullable @Named final Y single )
{
this.single = single;
this.fixed = fixed;
}
}
static class NamedInstance
extends AbstractX
{
final Y single;
@Inject
NamedInstance( @Nullable @Named( "TEST" ) final Y single )
{
this.single = single;
}
@Inject
void setFixed( final @Named( "fixed" ) Y fixed )
{
this.fixed = fixed;
}
}
static class HintMap
extends AbstractX
{
@Inject
Map<String, Y> map;
@Inject
Map<String, Provider<Y>> providerMap;
}
static class BeanEntries
implements X
{
@Inject
Iterable<BeanEntry<?, Y>> entries;
@Inject
Iterable<BeanEntry<Named, Y>> namedEntries;
}
static class PlaceholderInstance
extends AbstractX
{
@Inject
@Nullable
@Named( "${name}" )
Y single;
}
static class PlaceholderString
extends AbstractX
{
@Inject
@Nullable
@Named( "${text}" )
String config;
@Inject
@Nullable
@Named( "text" )
String plain;
}
static class PlaceholderConfig
extends AbstractX
{
@Inject
@Nullable
@Named( "4${value}2" )
int single;
}
static class BadMap
implements X
{
@Inject
Map<Integer, Integer> map;
}
static class RawList
implements X
{
@Inject
@SuppressWarnings( "rawtypes" )
List list;
}
static class RawMap
implements X
{
@Inject
@SuppressWarnings( "rawtypes" )
Map map;
}
static class MissingList
implements X
{
@Inject
@Named( "missing" )
List<Y> list;
}
static class MissingSet
implements X
{
@Inject
@Named( "missing" )
Set<Y> set;
}
static class MissingMap
implements X
{
@Inject
@Named( "missing" )
Map<Named, Y> map;
}
static class GenericInstance
implements X
{
@Inject
Z<? extends Number> number;
@Inject
Z<String> chars;
@Inject
Z<Random> random;
}
static class DynamicInstance
implements X
{
@Inject
@Dynamic
Y interfaceProxy;
@Inject
@Dynamic
YImpl concreteProxy;
}
static Map<String, Object> PROPS = new HashMap<String, Object>();
class TestModule
extends AbstractModule
{
@Override
protected void configure()
{
bind( ClassSpace.class ).toInstance( new URLClassSpace( BeanImportTest.class.getClassLoader() ) );
bindInterceptor( Matchers.subclassesOf( X.class ), Matchers.any() );
requestInjection( BeanImportTest.this );
bind( X.class ).annotatedWith( Names.named( "UI" ) ).to( UnrestrictedInstance.class );
bind( X.class ).annotatedWith( Names.named( "UL" ) ).to( UnrestrictedList.class );
bind( X.class ).annotatedWith( Names.named( "US" ) ).to( UnrestrictedSet.class );
bind( X.class ).annotatedWith( Names.named( "NT" ) ).to( NamedType.class );
bind( X.class ).annotatedWith( Names.named( "NI" ) ).to( NamedInstance.class );
bind( X.class ).annotatedWith( Names.named( "HM" ) ).to( HintMap.class );
bind( X.class ).annotatedWith( Names.named( "BE" ) ).to( BeanEntries.class );
bind( X.class ).annotatedWith( Names.named( "PI" ) ).to( PlaceholderInstance.class );
bind( X.class ).annotatedWith( Names.named( "PS" ) ).to( PlaceholderString.class );
bind( X.class ).annotatedWith( Names.named( "PC" ) ).to( PlaceholderConfig.class );
bind( X.class ).annotatedWith( Names.named( "GI" ) ).to( GenericInstance.class );
bind( X.class ).annotatedWith( Names.named( "DI" ) ).to( DynamicInstance.class );
bind( Y.class ).annotatedWith( Names.named( "fixed" ) ).toInstance( new YImpl() );
bind( Y.class ).annotatedWith( Names.named( "unscoped" ) ).to( YImpl.class );
bind( Y.class ).annotatedWith( new FuzzyImpl() ).toInstance( new YImpl() );
bind( Z.class ).annotatedWith( Names.named( "integer" ) ).toInstance( new ZImpl<Integer>()
{
} );
bind( Z.class ).annotatedWith( Names.named( "string" ) ).toInstance( new ZImpl<String>()
{
} );
bind( Z.class ).annotatedWith( Names.named( "raw" ) ).to( ZImpl.class );
bind( ImplWithName.class );
bind( ParameterKeys.PROPERTIES ).toInstance( PROPS );
}
}
public void testUnrestrictedImport()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
final UnrestrictedInstance unrestrictedInstance =
(UnrestrictedInstance) injector.getInstance( Key.get( X.class, Names.named( "UI" ) ) );
assertSame( unrestrictedInstance.fixed, unrestrictedInstance.single );
final UnrestrictedList unrestrictedList =
(UnrestrictedList) injector.getInstance( Key.get( X.class, Names.named( "UL" ) ) );
assertEquals( 3, unrestrictedList.list.size() );
assertSame( unrestrictedInstance.fixed, unrestrictedList.list.get( 0 ) );
assertSame( unrestrictedList.fixed, unrestrictedList.list.get( 0 ) );
assertSame( unrestrictedInstance.fuzzy, unrestrictedList.list.get( 2 ) );
assertSame( unrestrictedList.fuzzy, unrestrictedList.list.get( 2 ) );
assertNotSame( unrestrictedList.list.get( 0 ), unrestrictedList.list.get( 2 ) );
final Object[] listArray = unrestrictedList.list.toArray();
final Object[] collArray = unrestrictedList.coll.toArray();
assertSame( listArray[0], collArray[0] );
assertNotSame( listArray[1], collArray[1] );
assertSame( listArray[2], collArray[2] );
final Iterator<?> iterator = unrestrictedList.iterable.iterator();
assertTrue( iterator.hasNext() );
assertSame( unrestrictedList.list.get( 0 ), iterator.next() );
iterator.next();
assertSame( unrestrictedList.list.get( 2 ), iterator.next() );
assertFalse( iterator.hasNext() );
final UnrestrictedSet unrestrictedSet =
(UnrestrictedSet) injector.getInstance( Key.get( X.class, Names.named( "US" ) ) );
assertEquals( 3, unrestrictedSet.set.size() );
assertTrue( unrestrictedSet.set.contains( unrestrictedInstance.fixed ) );
assertTrue( unrestrictedSet.set.contains( unrestrictedList.fixed ) );
assertTrue( unrestrictedSet.set.contains( unrestrictedInstance.fuzzy ) );
assertTrue( unrestrictedSet.set.contains( unrestrictedList.fuzzy ) );
}
public void testNamedImports()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
final NamedType namedType = (NamedType) injector.getInstance( Key.get( X.class, Names.named( "NT" ) ) );
final NamedInstance namedInstance =
(NamedInstance) injector.getInstance( Key.get( X.class, Names.named( "NI" ) ) );
assertNotNull( namedType.single );
assertSame( namedType.fixed, namedType.single );
assertNull( namedInstance.single );
final HintMap hintMap = (HintMap) injector.getInstance( Key.get( X.class, Names.named( "HM" ) ) );
assertSame( namedType.fixed, hintMap.map.get( "fixed" ) );
assertSame( hintMap.fixed, hintMap.map.get( "fixed" ) );
assertNotSame( namedType.fixed, hintMap.map.get( "unscoped" ) );
assertNotSame( hintMap.fixed, hintMap.map.get( "unscoped" ) );
assertEquals( 2, hintMap.map.size() );
}
public void testProviderImports()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
final UnrestrictedList unrestrictedList =
(UnrestrictedList) injector.getInstance( Key.get( X.class, Names.named( "UL" ) ) );
final UnrestrictedSet unrestrictedSet =
(UnrestrictedSet) injector.getInstance( Key.get( X.class, Names.named( "US" ) ) );
final HintMap hintMap = (HintMap) injector.getInstance( Key.get( X.class, Names.named( "HM" ) ) );
Provider<Y> provider;
provider = unrestrictedList.providerList.get( 0 );
assertTrue( provider.get() instanceof YImpl );
assertSame( provider.get(), provider.get() );
provider = unrestrictedList.providerList.get( 1 );
assertTrue( provider.get() instanceof YImpl );
assertNotSame( provider.get(), provider.get() );
assertEquals( 3, unrestrictedList.providerList.size() );
final Iterator<Provider<Y>> itr = unrestrictedSet.providerSet.iterator();
provider = itr.next();
assertTrue( provider.get() instanceof YImpl );
assertSame( provider.get(), provider.get() );
provider = itr.next();
assertTrue( provider.get() instanceof YImpl );
assertNotSame( provider.get(), provider.get() );
assertEquals( 3, unrestrictedList.providerList.size() );
provider = hintMap.providerMap.get( "unscoped" );
assertTrue( provider.get() instanceof YImpl );
assertNotSame( provider.get(), provider.get() );
assertEquals( 2, hintMap.providerMap.size() );
provider = hintMap.namedProviderMap.get( Names.named( "unscoped" ) );
assertTrue( provider.get() instanceof YImpl );
assertNotSame( provider.get(), provider.get() );
assertEquals( 2, hintMap.namedProviderMap.size() );
provider = hintMap.providerMap.get( "fixed" );
assertTrue( provider.get() instanceof YImpl );
assertSame( provider.get(), provider.get() );
assertEquals( 2, hintMap.providerMap.size() );
provider = hintMap.namedProviderMap.get( Names.named( "fixed" ) );
assertTrue( provider.get() instanceof YImpl );
assertSame( provider.get(), provider.get() );
assertEquals( 2, hintMap.namedProviderMap.size() );
}
public void testBeanEntries()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
final BeanEntries beans = (BeanEntries) injector.getInstance( Key.get( X.class, Names.named( "BE" ) ) );
final HintMap hintMap = (HintMap) injector.getInstance( Key.get( X.class, Names.named( "HM" ) ) );
Iterator<? extends BeanEntry<?, Y>> i = beans.namedEntries.iterator();
assertTrue( i.hasNext() );
assertSame( hintMap.map.get( "fixed" ), i.next().getValue() );
assertNotSame( hintMap.map.get( "unscoped" ), i.next().getValue() );
assertFalse( i.hasNext() );
i = beans.entries.iterator();
assertTrue( i.hasNext() );
assertEquals( Names.named( "fixed" ), i.next().getKey() );
assertNotSame( Names.named( "unscoped" ), i.next().getKey() );
assertNotSame( new FuzzyImpl(), i.next().getKey() );
assertFalse( i.hasNext() );
}
public void testPlaceholderImports()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
PlaceholderInstance placeholderInstance;
placeholderInstance = (PlaceholderInstance) injector.getInstance( Key.get( X.class, Names.named( "PI" ) ) );
assertNull( placeholderInstance.single );
final Y why = new YImpl();
PROPS.put( "name", why );
placeholderInstance = (PlaceholderInstance) injector.getInstance( Key.get( X.class, Names.named( "PI" ) ) );
assertSame( why, placeholderInstance.single );
PROPS.put( "name", "fixed" );
placeholderInstance = (PlaceholderInstance) injector.getInstance( Key.get( X.class, Names.named( "PI" ) ) );
assertSame( placeholderInstance.fixed, placeholderInstance.single );
PlaceholderString placeholderString;
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertNull( placeholderString.config );
assertNull( placeholderString.plain );
PROPS.put( "text", "Hello, world!" );
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertEquals( "Hello, world!", placeholderString.config );
assertEquals( "Hello, world!", placeholderString.plain );
PROPS.put( "text", "text" );
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertEquals( "text", placeholderString.config );
assertEquals( "text", placeholderString.plain );
PROPS.put( "text", "${text}" );
try
{
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
fail( "Expected ProvisionException" );
}
catch ( final ProvisionException e )
{
assertTrue( e.getMessage().contains( "${text}" ) );
}
PROPS.put( "text", ">${one}{" );
PROPS.put( "one", "-${two}=" );
PROPS.put( "two", "<${three}}" );
PROPS.put( "three", "|${text}|" );
try
{
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
fail( "Expected ProvisionException" );
}
catch ( final ProvisionException e )
{
assertTrue( e.getMessage().contains( ">-<|>-<|${text}|}={|}={" ) );
}
PROPS.put( "text", ">${text" );
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertEquals( ">${text", placeholderString.config );
assertEquals( ">${text", placeholderString.plain );
PROPS.put( "text", "${key:-default}" );
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertEquals( "default", placeholderString.config );
assertEquals( "default", placeholderString.plain );
PROPS.put( "key", "configured" );
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertEquals( "configured", placeholderString.config );
assertEquals( "configured", placeholderString.plain );
PROPS.put( "text", "${:-some:-default:-value:-}" );
placeholderString = (PlaceholderString) injector.getInstance( Key.get( X.class, Names.named( "PS" ) ) );
assertEquals( "some:-default:-value:-", placeholderString.config );
assertEquals( "some:-default:-value:-", placeholderString.plain );
try
{
injector.getInstance( Key.get( X.class, Names.named( "PC" ) ) );
fail( "Expected RuntimeException" );
}
catch ( final RuntimeException e )
{
System.out.println( e );
}
PROPS.put( "value", "53" );
assertEquals( 4532,
( (PlaceholderConfig) injector.getInstance( Key.get( X.class, Names.named( "PC" ) ) ) ).single );
}
public void testDuplicatesAreIgnored()
{
Guice.createInjector( new WireModule( new TestModule(), new TestModule(), new TestModule() ) );
}
public void testImportSource()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
assertEquals( LocatorWiring.class.getName(), injector.getBinding( Y.class ).getSource().toString() );
}
public void testInvalidTypeArguments()
{
try
{
Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( X.class ).annotatedWith( Names.named( "BM" ) ).to( BadMap.class );
}
} ) );
fail( "Expected CreationException" );
}
catch ( final CreationException e )
{
}
try
{
Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( X.class ).annotatedWith( Names.named( "RL" ) ).to( RawList.class );
}
} ) );
fail( "Expected CreationException" );
}
catch ( final CreationException e )
{
}
try
{
Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( X.class ).annotatedWith( Names.named( "RM" ) ).to( RawMap.class );
}
} ) );
fail( "Expected CreationException" );
}
catch ( final CreationException e )
{
}
try
{
Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( X.class ).annotatedWith( Names.named( "ML" ) ).to( MissingList.class );
}
} ) );
fail( "Expected CreationException" );
}
catch ( final CreationException e )
{
}
try
{
Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( X.class ).annotatedWith( Names.named( "MS" ) ).to( MissingSet.class );
}
} ) );
fail( "Expected CreationException" );
}
catch ( final CreationException e )
{
}
try
{
Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( X.class ).annotatedWith( Names.named( "MM" ) ).to( MissingMap.class );
}
} ) );
fail( "Expected CreationException" );
}
catch ( final CreationException e )
{
}
}
public void testGenericInjection()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
final GenericInstance genericInstance =
(GenericInstance) injector.getInstance( Key.get( X.class, Names.named( "GI" ) ) );
// ZImpl<Integer> is best match for Z<? extends Number>
assertEquals( TypeLiteral.get( Integer.class ),
TypeArguments.get( TypeLiteral.get( genericInstance.number.getClass() ).getSupertype( Z.class ),
0 ) );
// ZImpl<String> is best match for Z<String>
assertEquals( TypeLiteral.get( String.class ),
TypeArguments.get( TypeLiteral.get( genericInstance.chars.getClass() ).getSupertype( Z.class ), 0 ) );
// raw ZImpl is best match for Z<Random>
assertEquals( TypeLiteral.get( Object.class ),
TypeArguments.get( TypeLiteral.get( genericInstance.random.getClass() ).getSupertype( Z.class ),
0 ) );
}
public void testChildWiring()
{
final Y y = new YImpl();
final Injector parent = Guice.createInjector( new AbstractModule()
{
@Override
protected void configure()
{
bind( Y.class ).annotatedWith( Names.named( "fixed" ) ).toInstance( y );
}
} );
final Injector child = parent.createChildInjector( new AbstractModule()
{
@Override
protected void configure()
{
bind( Y.class ).annotatedWith( new FuzzyImpl() ).toInstance( y );
}
} );
final Injector grandchild = child.createChildInjector( new ChildWireModule( child, new TestModule() ) );
assertSame( y, ( (PlaceholderString) grandchild.getInstance( Key.get( X.class, Names.named( "PS" ) ) ) ).fixed );
assertSame( y, ( (PlaceholderString) grandchild.getInstance( Key.get( X.class, Names.named( "PS" ) ) ) ).fuzzy );
}
public void testParametersLookup()
{
final BeanLocator locator = Guice.createInjector( new WireModule( new AbstractModule()
{
@Override
protected void configure()
{
bind( ParameterKeys.PROPERTIES ).toInstance( Collections.singletonMap( "Hello", "world!" ) );
}
} ) ).getInstance( BeanLocator.class );
@SuppressWarnings( { "rawtypes", "unchecked" } )
final Iterator<Map<?, ?>> itr = new EntryListAdapter( locator.locate( ParameterKeys.PROPERTIES ) ).iterator();
assertTrue( itr.hasNext() );
final Map<?, ?> parameters = itr.next();
assertEquals( 1, parameters.size() );
assertEquals( "world!", parameters.get( "Hello" ) );
assertFalse( itr.hasNext() );
}
@SuppressWarnings( "boxing" )
public void testDynamicProxy()
{
final Injector injector = Guice.createInjector( new WireModule( new TestModule() ) );
final DynamicInstance dynamicInstance =
(DynamicInstance) injector.getInstance( Key.get( X.class, Names.named( "DI" ) ) );
assertEquals( 42.0, dynamicInstance.interfaceProxy.fn( 12.3, 29.7 ) );
assertEquals( 9.0, dynamicInstance.concreteProxy.fn( 7, 2 ) );
// add new Y binding that multiplies the arguments instead of adding them
final Injector child1 = injector.createChildInjector( new ChildWireModule( injector, new AbstractModule()
{
@Override
protected void configure()
{
final Binder overrides = binder().withSource( Sources.prioritize( Integer.MAX_VALUE ) );
overrides.bind( Y.class ).annotatedWith( Names.named( "multiply" ) ).toInstance( new YImpl()
{
@Override
public double fn( final double x, final double y )
{
return x * y;
}
} );
}
} ) );
// interface proxy should now delegate to multiplying implementation
assertEquals( 365.31, dynamicInstance.interfaceProxy.fn( 12.3, 29.7 ) );
// concrete proxy shouldn't be affected by the interface binding
assertEquals( 9.0, dynamicInstance.concreteProxy.fn( 7, 2 ) );
// add new YImpl binding that divides the arguments instead of adding them
final Injector child2 = injector.createChildInjector( new ChildWireModule( injector, new AbstractModule()
{
@Override
protected void configure()
{
final Binder overrides = binder().withSource( Sources.prioritize( Integer.MAX_VALUE ) );
overrides.bind( YImpl.class ).annotatedWith( Names.named( "divide" ) ).toInstance( new YImpl()
{
@Override
public double fn( final double x, final double y )
{
return x / y;
}
} );
}
} ) );
// interface proxy should still delegate to multiplier implementation
assertEquals( 365.31, dynamicInstance.interfaceProxy.fn( 12.3, 29.7 ) );
// concrete proxy should now delegate to the dividing implementation
assertEquals( 3.5, dynamicInstance.concreteProxy.fn( 7, 2 ) );
// Object.toString delegates to the active instance
final Y multiply = child1.getInstance( Key.get( Y.class, Names.named( "multiply" ) ) );
final Y divide = child2.getInstance( Key.get( YImpl.class, Names.named( "divide" ) ) );
assertTrue( dynamicInstance.interfaceProxy.toString().equals( multiply.toString() ) );
assertTrue( dynamicInstance.concreteProxy.toString().equals( divide.toString() ) );
// but Object.hashCode and Object.equals default to superclass instead
assertEquals( System.identityHashCode( dynamicInstance.interfaceProxy ),
dynamicInstance.interfaceProxy.hashCode() );
assertEquals( System.identityHashCode( dynamicInstance.concreteProxy ),
dynamicInstance.concreteProxy.hashCode() );
assertTrue( dynamicInstance.interfaceProxy.equals( dynamicInstance.interfaceProxy ) );
assertTrue( dynamicInstance.concreteProxy.equals( dynamicInstance.concreteProxy ) );
// remove all implementations from the shared locator
injector.getInstance( MutableBeanLocator.class ).clear();
try
{
dynamicInstance.interfaceProxy.fn( 12.3, 29.7 );
fail( "Expected IllegalStateException" );
}
catch ( final IllegalStateException e )
{
// should now get an exception on invoke
}
try
{
dynamicInstance.concreteProxy.fn( 7, 2 );
fail( "Expected IllegalStateException" );
}
catch ( final IllegalStateException e )
{
// should now get an exception on invoke
}
// all Object methods default to superclass implementation when delegate is missing
assertTrue( dynamicInstance.interfaceProxy.toString().startsWith( Y.class.getName() + "$__sisu__$" ) );
assertTrue( dynamicInstance.concreteProxy.toString().startsWith( YImpl.class.getName() + "$__sisu__$" ) );
assertEquals( System.identityHashCode( dynamicInstance.interfaceProxy ),
dynamicInstance.interfaceProxy.hashCode() );
assertEquals( System.identityHashCode( dynamicInstance.concreteProxy ),
dynamicInstance.concreteProxy.hashCode() );
assertTrue( dynamicInstance.interfaceProxy.equals( dynamicInstance.interfaceProxy ) );
assertTrue( dynamicInstance.concreteProxy.equals( dynamicInstance.concreteProxy ) );
}
}