import org.eclipse.core.resources.IProject;

import org.eclipse.core.resources.IResource;

import org.eclipse.core.runtime.IPath;

import org.eclipse.jdt.core.tests.model.AbstractJavaSearchTests.TypeNameMatchCollector;

import org.eclipse.jdt.core.tests.util.Util;

/**

 * @bug 211962: [search] NullPointerException when typing search pattern in open type

 * @test Ensure that no NPE occurs when an internal JAR file of a non-Java project

 *		has the same path than an external JAR file which is on a Java project classpath

 * @see "https://bugs.eclipse.org/bugs/show_bug.cgi?id=211962"

 */

public void testBug211962() throws CoreException, IOException {

	IPath tmpPath = new Path(getExternalPath()).append("b211962");

	try {

		// Create external JAR file

		tmpPath.toFile().mkdir();

		IPath externalLibPath = tmpPath.append("lib.jar");

		String[] pathsAndContents = new String[] {

			"p/X.java",

			"package p;\n" +

			"public class X {}"

		};

		Util.createJar(pathsAndContents, externalLibPath.toString(), "1.4");

		// Create simple project with internal JAR file

		IProject p1 = createProject(tmpPath.segment(0));

		IPath folderPath = new Path(p1.getName());

		for (int i=1,max=tmpPath.segmentCount(); i<max; i++) {

			folderPath = folderPath.append(tmpPath.segment(i));

			createFolder(folderPath.toString());

		}

		IPath internalLibPath = p1.getParent().getLocation().append(folderPath).append("lib.jar");

		Util.createJar(pathsAndContents, internalLibPath.toString(), "1.4");

		p1.refreshLocal(IResource.DEPTH_INFINITE, null);

		// Create java project

		String libPath = externalLibPath.setDevice(null).toString();

		IJavaProject p2 = createJavaProject("P2", new String[] {"src"}, new String[] {"JCL_LIB", libPath }, "bin");

		// Search all type names with TypeNameMatchRequestor

		TypeNameMatchCollector collector = new TypeNameMatchCollector();

		new SearchEngine().searchAllTypeNames(

			null,

			SearchPattern.R_EXACT_MATCH,

			new char[] { 'X' },

			SearchPattern.R_PREFIX_MATCH,

			IJavaSearchConstants.TYPE,

			SearchEngine.createJavaSearchScope(new IJavaElement[] { p2 }),

			collector,

			IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH,

			null);

		assertSearchResults(

			"X (not open) [in X.class [in p [in "+libPath+" [in P2]]]]",

			collector

		);

	} finally {

		Util.delete(tmpPath.toString());

		deleteProject(tmpPath.segment(0));

		deleteProject("P2");

	}

}