*  Copyright (c) 2000, 2011 IBM Corporation and others.

 *  Copyright (c) 2000, 2013 IBM Corporation and others.

}

	public void testJREContainerIndex() {

		// get the current VM

		IVMInstall def = JavaRuntime.getDefaultVMInstall();

		LibraryLocation[] libs = JavaRuntime.getLibraryLocations(def);

		// generate an index for the first library location only (to save time - do not need an index for all libraries)

		URL indexURL = null;

		try {

			indexURL = this.getIndexForLibrary(libs[0]);

		}

		catch (Exception ex) {

			fail(ex.getMessage());

		}

		// clone the current VM, but only add the one library that was indexed

		VMStandin newVMStandin = new VMStandin(def.getVMInstallType(), "index.jre");

		newVMStandin.setName("JRE with pre-built index");

		newVMStandin.setInstallLocation(def.getInstallLocation());

		final LibraryLocation[] newLibs = new LibraryLocation[1];

		newLibs[0] = new LibraryLocation(libs[0].getSystemLibraryPath(), libs[0].getSystemLibrarySourcePath(), libs[0].getPackageRootPath(), libs[0].getJavadocLocation(), indexURL);

		newVMStandin.setLibraryLocations(newLibs);

		IVMInstall newVM = newVMStandin.convertToRealVM();

		// make sure the index URL is correct

		assertEquals(indexURL, newVM.getLibraryLocations()[0].getIndexLocation());

		// create the JRE container

		IPath containerPath = new Path(JavaRuntime.JRE_CONTAINER);

		JREContainer container = new JREContainer(newVM, containerPath, get14Project());

		IClasspathEntry[] originalEntries = container.getClasspathEntries();

		// There should only be 1 classpath entry (the 1 library added)

		assertEquals(1, originalEntries.length);

		IClasspathAttribute[] cpAttributes = originalEntries[0].getExtraAttributes();

		// There should only be 1 classpath attribute for this entry

		assertEquals(1, cpAttributes.length);

		// and that 1 classpath attribute should be the index location

		assertEquals(IClasspathAttribute.INDEX_LOCATION_ATTRIBUTE_NAME, cpAttributes[0].getName());

		// and it should have a value of the original indexURL in its string form.

		assertEquals(indexURL.toString(), cpAttributes[0].getValue());

	}

	/**

	 * Generates and returns a {@link URL} to the index file for a given {@link LibraryLocation} into the state location

	 */

	private URL getIndexForLibrary(final LibraryLocation library) throws IOException, MalformedURLException {

		// construct the path to the index file

		File libraryFile = library.getSystemLibraryPath().toFile();

		String indexName = libraryFile.getName() + ".index";

		IPath indexPath = JavaTestPlugin.getDefault().getStateLocation().append(indexName);

		// generate the index using JDT Core API

		JavaIndexer.generateIndexForJar(libraryFile.getAbsolutePath(), indexPath.toOSString());

		// return the index URL

		URL indexURL = indexPath.toFile().toURI().toURL();

		return indexURL;

	} 

}