Migrated attachment for Guice issue 251, comment 1

ProvidedByScopeTest.java

import static junit.framework.Assert.assertEquals;

import org.junit.Test;

import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.ProvidedBy;
import com.google.inject.Provider;
import com.google.inject.Scopes;
import com.google.inject.Singleton;

public class ProvidedByScopeTest
{
    static class Class1Provider implements Provider<Class1>
    {
        public Class1 get()
        {
            return new Class1();
        }
    }

    @Singleton
    @ProvidedBy( Class1Provider.class )
    static class Class1
    {
        @Override
        public boolean equals( Object obj )
        {
            return this == obj;
        }
    }

    @Test
    public void testProvidedByWithScope() throws Exception
    {
        final Injector i = Guice.createInjector();
        final Class1 i1 = i.getInstance( Class1.class );
        final Class1 i2 = i.getInstance( Class1.class );
        assertEquals( i1, i2 );
    }

    @Test
    public void testProvidedByWithScopeFromModule() throws Exception
    {
        final Injector i = Guice.createInjector( new AbstractModule() {

            @Override
            protected void configure()
            {
                bind( Class1.class ).in( Scopes.SINGLETON );

            }
        } );

        final Class1 i1 = i.getInstance( Class1.class );
        final Class1 i2 = i.getInstance( Class1.class );
        assertEquals( i1, i2 );
    }
}