/*
 * Copyright 2000-2013 Enonic AS
 * http://www.enonic.com/license
 */

package com.enonic.cms.core.plugin.spring;

import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;

import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
import org.osgi.framework.Bundle;
import org.osgi.framework.Version;

import static org.junit.Assert.*;

public class BundleClassLoaderTest
{
    private Bundle bundle;

    private BundleClassLoader loader;

    @Before
    public void setUp()
    {
        this.bundle = Mockito.mock( Bundle.class );
        Mockito.when( this.bundle.getSymbolicName() ).thenReturn( "some.id" );
        Mockito.when( this.bundle.getVersion() ).thenReturn( new Version( "1.1.1" ) );

        this.loader = new BundleClassLoader( this.bundle );
    }

    @Test
    public void testLoadClass()
        throws Exception
    {
        Mockito.when( this.bundle.loadClass( "ClassInBundle" ) ).thenReturn( String.class );
        final Class clz = this.loader.loadClass( "ClassInBundle" );
        assertNotNull( clz );
    }

    @Test(expected = ClassNotFoundException.class)
    public void testLoadClassNotFound()
        throws Exception
    {
        Mockito.when( this.bundle.loadClass( "ClassInBundle" ) ).thenThrow( new ClassNotFoundException() );
        this.loader.loadClass( "ClassInBundle" );
    }

    @Test
    public void testGetResource()
        throws Exception
    {
        final URL url = new URL( "file://some/path" );
        Mockito.when( this.bundle.getResource( "/to/some/resource" ) ).thenReturn( url );

        final URL result = this.loader.getResource( "/to/some/resource" );
        assertNotNull( result );
        assertEquals( url, result );
    }

    @Test
    public void testGetResources()
        throws Exception
    {
        final URL url = new URL( "file://some/path" );
        final Enumeration<URL> list = Collections.enumeration( Arrays.asList( url ) );

        Mockito.when( this.bundle.getResources( "/a/package" ) ).thenReturn( list );

        final Enumeration<URL> result = this.loader.getResources( "/a/package" );
        assertNotNull( result );
        assertTrue( result.hasMoreElements() );
        assertEquals( url, result.nextElement() );
        assertFalse( result.hasMoreElements() );
    }

    @Test
    public void testEquals()
    {
        final ClassLoader other1 = Mockito.mock( ClassLoader.class );
        final ClassLoader other2 = new BundleClassLoader( Mockito.mock( Bundle.class ) );

        assertFalse( this.loader.equals( null ) );
        assertFalse( this.loader.equals( other1 ) );
        assertFalse( this.loader.equals( other2 ) );

        assertTrue( this.loader.equals( this.loader ) );
        assertTrue( this.loader.equals( new BundleClassLoader( this.bundle ) ) );
    }

    @Test
    public void testToString()
    {
        assertEquals( "BundleClassLoader[some.id:1.1.1]", this.loader.toString() );
    }

    @Test
    public void testHashCode()
    {
        final int hashCode = this.loader.hashCode();
        assertEquals( this.bundle.hashCode(), hashCode );
    }
}