if (rawEntry == null) {

		throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.ELEMENT_NOT_ON_CLASSPATH, this));

	}

import org.eclipse.jdt.internal.core.PackageFragmentRoot;

/**

 * @bug 162104: NPE in PackageExplorerContentProvider.getPackageFragmentRoots()

 * @test That a JME is thrown when a classpath entry is no longer on the classpath

 * @see "https://bugs.eclipse.org/bugs/show_bug.cgi?id=162104"

 */

public void testPackageFragmentRootNullRawEntry() throws CoreException, IOException {

	File libDir = null;

	try {

		String libPath = getExternalPath() + "lib";

		JavaCore.setClasspathVariable("MyVar", new Path(libPath), null);

		IJavaProject proj =  this.createJavaProject("P", new String[] {}, "bin");

		libDir = new File(libPath);

		libDir.mkdirs();

		final int length = 10;

		IClasspathEntry[] classpath = new IClasspathEntry[length];

		for (int i = 0; i < length; i++){

			File libJar = new File(libDir, "lib"+i+".jar");

			libJar.createNewFile();

			classpath[i] = JavaCore.newVariableEntry(new Path("/MyVar/lib"+i+".jar"), null, null);

		}

		proj.setRawClasspath(classpath, null);

		IPackageFragmentRoot[] roots = proj.getPackageFragmentRoots();

		assertEquals("wrong number of entries:", length, roots.length);

		// remove last classpath entry

		System.arraycopy(classpath, 0, classpath = new IClasspathEntry[length-1], 0, length-1);

		proj.setRawClasspath(classpath, null);

		// verify that JME occurs

		IPackageFragmentRoot lastRoot = roots[length-1];

		String rootPath = ((PackageFragmentRoot)lastRoot).toStringWithAncestors();

		try {

			IClasspathEntry rawEntry = roots[length-1].getRawClasspathEntry();

			assertNotNull("We should no longer get a null classpath entry:", rawEntry);

		} catch (JavaModelException jme) {

			assertStatus(rootPath+" is not on its project's build path", jme.getJavaModelStatus());

		}

	} finally {

		if (libDir != null) {

			org.eclipse.jdt.core.tests.util.Util.delete(libDir);

		}

		this.deleteProject("P");

		JavaCore.removeClasspathVariable("MyVar", null);

	}

}