/*******************************************************************************
 * Copyright (c) 2000, 2012 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.core.tests.builder;

import java.util.Hashtable;

import junit.framework.Test;
import junit.framework.TestSuite;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.IAccessRule;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.compiler.CategorizedProblem;
import org.eclipse.jdt.core.tests.util.Util;


public class MultiProjectTests extends BuilderTests {

	public MultiProjectTests(String name) {
		super(name);
	}

	public static Test suite() {
		TestSuite suite = new TestSuite(MultiProjectTests.class.getName());
		suite.addTest(new MultiProjectTests("testCompileOnlyDependent"));
		suite.addTest(new MultiProjectTests("testCompileOnlyStructuralDependent"));
		suite.addTest(new MultiProjectTests("testRemoveField"));
		suite.addTest(new MultiProjectTests("testCompileOrder"));
		suite.addTest(new MultiProjectTests("testCycle1"));
		suite.addTest(new MultiProjectTests("testCycle2"));
		suite.addTest(new MultiProjectTests("testCycle3"));
		suite.addTest(new MultiProjectTests("testCycle4"));
		suite.addTest(new MultiProjectTests("testCycle5"));
		suite.addTest(new MultiProjectTests("testCycle6"));
		suite.addTest(new MultiProjectTests("testCycle7"));
		suite.addTest(new MultiProjectTests("testExcludePartOfAnotherProject1"));
		suite.addTest(new MultiProjectTests("testExcludePartOfAnotherProject2"));
		suite.addTest(new MultiProjectTests("testExcludePartOfAnotherProject3"));
		suite.addTest(new MultiProjectTests("testIncludePartOfAnotherProject1"));
		suite.addTest(new MultiProjectTests("testIncludePartOfAnotherProject2"));
		suite.addTest(new MultiProjectTests("testIncludePartOfAnotherProject3"));
		suite.addTest(new MultiProjectTests("testIgnoreIfBetterNonAccessibleRule1"));
		suite.addTest(new MultiProjectTests("testIgnoreIfBetterNonAccessibleRule2"));
		suite.addTest(new MultiProjectTests("testMissingRequiredBinaries"));
		suite.addTest(new MultiProjectTests("test100_class_folder_exported"));
		suite.addTest(new MultiProjectTests("test101_class_folder_non_exported"));
		suite.addTest(new MultiProjectTests("test102_missing_required_binaries"));
		suite.addTest(new MultiProjectTests("test103_missing_required_binaries"));
		return suite;
	}

	public void testCompileOnlyDependent() throws JavaModelException {
		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"public class B extends A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project3
			//----------------------------
		IPath project3Path = env.addProject("Project3"); //$NON-NLS-1$
		env.addExternalJars(project3Path, Util.getJavaClassLibs());
		IPath root3 = env.getPackageFragmentRootPath(project3Path, ""); //$NON-NLS-1$
		env.addClass(root3, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingNoProblems();

		//----------------------------
		//           Step 2
		//----------------------------
		env.addClass(root1, "", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"public class A {\n"+ //$NON-NLS-1$
			"   int x;\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		incrementalBuild();
		expectingCompiledClasses(new String[]{"A", "B"}); //$NON-NLS-1$ //$NON-NLS-2$
	}

	// 14103 - avoid recompiling unaffected sources in dependent projects
	public void testCompileOnlyStructuralDependent() throws JavaModelException {
		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "", "Unreferenced", //$NON-NLS-1$ //$NON-NLS-2$
			"public class Unreferenced {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"public class B extends A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project3
			//----------------------------
		IPath project3Path = env.addProject("Project3"); //$NON-NLS-1$
		env.addExternalJars(project3Path, Util.getJavaClassLibs());
		IPath root3 = env.getPackageFragmentRootPath(project3Path, ""); //$NON-NLS-1$
		env.addClass(root3, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingNoProblems();

		//----------------------------
		//           Step 2
		//----------------------------
		// non-structural change should not fool dependent projcts
		env.addClass(root1, "", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"public class A {\n"+ //$NON-NLS-1$
			"   // add comment (non-structural change)\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		// structural change, but no actual dependents
		env.addClass(root1, "", "Unreferenced", //$NON-NLS-1$ //$NON-NLS-2$
			"public class Unreferenced {\n"+ //$NON-NLS-1$
			"   int x; //structural change\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		incrementalBuild();
		expectingCompiledClasses(new String[]{"A", "Unreferenced"}); //$NON-NLS-1$ //$NON-NLS-2$
	}

	public void testRemoveField() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		options.put(JavaCore.COMPILER_PB_UNUSED_LOCAL, JavaCore.IGNORE); //$NON-NLS-1$
		JavaCore.setOptions(options);

		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"public class A {\n"+ //$NON-NLS-1$
			"   public int x;\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		IPath b = env.addClass(root2, "", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"public class B {\n"+ //$NON-NLS-1$
			"   public void foo(){\n"+ //$NON-NLS-1$
			"      int x = new A().x;\n"+ //$NON-NLS-1$
			"   }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingNoProblems();

		//----------------------------
		//           Step 2
		//----------------------------
		env.addClass(root1, "", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		incrementalBuild();
		expectingSpecificProblemFor(b, new Problem("B.foo()", "x cannot be resolved or is not a field", b, 61, 62, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$
	}

	public void testCompileOrder() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		Hashtable newOptions = JavaCore.getOptions();
		newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING); //$NON-NLS-1$

		JavaCore.setOptions(newOptions);

		//----------------------------
		//         Project1
		//----------------------------
		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		IPath c1 = env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
			"package p1;\n"+ //$NON-NLS-1$
			"public class X {\n"+ //$NON-NLS-1$
			"  W w;\n" + //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project2
		//----------------------------
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		IPath c2 = env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"public class Y {\n"+ //$NON-NLS-1$
			"  W w;\n" + //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project3
		//----------------------------
		IPath p3 = env.addProject("P3"); //$NON-NLS-1$
		env.addExternalJars(p3, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p3, ""); //$NON-NLS-1$
		IPath root3 = env.addPackageFragmentRoot(p3, "src"); //$NON-NLS-1$
		env.setOutputFolder(p3, "bin"); //$NON-NLS-1$

		IPath c3 = env.addClass(root3, "p3", "Z", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n"+ //$NON-NLS-1$
			"public class Z {\n"+ //$NON-NLS-1$
			"  W w;\n" + //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		env.setBuildOrder(new String[]{"P1", "P3", "P2"});//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
		fullBuild();

		expectingCompilingOrder(new String[]{"p1.X", "p3.Z", "p2.Y"}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
		IPath workspaceRootPath = env.getWorkspaceRootPath();
		expectingOnlySpecificProblemsFor(workspaceRootPath,new Problem[]{
				new Problem("p3", "W cannot be resolved to a type", c3, 31, 32, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "W cannot be resolved to a type", c2, 31, 32, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p1", "W cannot be resolved to a type", c1, 31, 32, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR)//$NON-NLS-1$ //$NON-NLS-2$
		});
		JavaCore.setOptions(options);
	}

	public void testCycle1() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		Hashtable newOptions = JavaCore.getOptions();
		newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING); //$NON-NLS-1$

		JavaCore.setOptions(newOptions);

		//----------------------------
		//         Project1
		//----------------------------
		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
			"package p1;\n"+ //$NON-NLS-1$
			"import p2.Y;\n"+ //$NON-NLS-1$
			"public class X {\n"+ //$NON-NLS-1$
			"  public void bar(Y y){\n"+ //$NON-NLS-1$
			"    y.zork();\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project2
		//----------------------------
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"import p3.Z;\n"+ //$NON-NLS-1$
			"public class Y extends Z{\n"+ //$NON-NLS-1$
			"  public X zork(){\n"+ //$NON-NLS-1$
			"    X x = foo();\n"+ //$NON-NLS-1$
			"    x.bar(this);\n"+ //$NON-NLS-1$
			"    return x;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project3
		//----------------------------
		IPath p3 = env.addProject("P3"); //$NON-NLS-1$
		env.addExternalJars(p3, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p3, ""); //$NON-NLS-1$
		IPath root3 = env.addPackageFragmentRoot(p3, "src"); //$NON-NLS-1$
		env.setOutputFolder(p3, "bin"); //$NON-NLS-1$

		env.addClass(root3, "p3", "Z", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"public class Z {\n"+ //$NON-NLS-1$
			"  public X foo(){\n"+ //$NON-NLS-1$
			"    return null;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		// for Project1
		env.addRequiredProject(p1, p2);
		env.addRequiredProject(p1, p3);
		// for Project2
		env.addRequiredProject(p2, p1);
		env.addRequiredProject(p2, p3);
		// for Project3
		env.addRequiredProject(p3, p1);

		try {
			env.setBuildOrder(new String[]{"P1", "P2", "P3"});//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
			fullBuild();

			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y", "p3.Z", "p1.X"});//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$//$NON-NLS-5$//$NON-NLS-6$//$NON-NLS-7$
			expectingOnlySpecificProblemFor(p1, new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$

			JavaCore.setOptions(options);
		} finally {
			env.setBuildOrder(null);
		}
	}

	public void testCycle2() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		Hashtable newOptions = JavaCore.getOptions();
		newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING); //$NON-NLS-1$

		JavaCore.setOptions(newOptions);

		//----------------------------
		//         Project1
		//----------------------------
		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
			"package p1;\n"+ //$NON-NLS-1$
			"import p2.Y;\n"+ //$NON-NLS-1$
			"public class X {\n"+ //$NON-NLS-1$
			"  public void bar(Y y, int i){\n"+ //$NON-NLS-1$
			"    y.zork();\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project2
		//----------------------------
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		IPath c2 = env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"import p3.Z;\n"+ //$NON-NLS-1$
			"public class Y extends Z{\n"+ //$NON-NLS-1$
			"  public X zork(){\n"+ //$NON-NLS-1$
			"    X x = foo();\n"+ //$NON-NLS-1$
			"    x.bar(this);\n"+ //$NON-NLS-1$
			"    return x;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project3
		//----------------------------
		IPath p3 = env.addProject("P3"); //$NON-NLS-1$
		env.addExternalJars(p3, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p3, ""); //$NON-NLS-1$
		IPath root3 = env.addPackageFragmentRoot(p3, "src"); //$NON-NLS-1$
		env.setOutputFolder(p3, "bin"); //$NON-NLS-1$

		env.addClass(root3, "p3", "Z", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"public class Z {\n"+ //$NON-NLS-1$
			"  public X foo(){\n"+ //$NON-NLS-1$
			"    return null;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		// for Project1
		env.addRequiredProject(p1, p2);
		env.addRequiredProject(p1, p3);
		// for Project2
		env.addRequiredProject(p2, p1);
		env.addRequiredProject(p2, p3);
		// for Project3
		env.addRequiredProject(p3, p1);

		try {
			env.setBuildOrder(new String[]{"P1", "P2", "P3"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
			fullBuild();

			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y", "p3.Z", "p1.X"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$ //$NON-NLS-6$//$NON-NLS-7$
			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemsFor(p2,new Problem[]{
					new Problem("p2", "The method bar(Y, int) in the type X is not applicable for the arguments (Y)", c2, 106, 109, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
					new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});
			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$

			JavaCore.setOptions(options);
		} finally {
			env.setBuildOrder(null);
		}
	}

	public void testCycle3() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		Hashtable newOptions = JavaCore.getOptions();
		newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING); //$NON-NLS-1$

		JavaCore.setOptions(newOptions);

		//----------------------------
		//         Project1
		//----------------------------
		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
			"package p1;\n"+ //$NON-NLS-1$
			"import p2.Y;\n"+ //$NON-NLS-1$
			"public class X {\n"+ //$NON-NLS-1$
			"  public void bar(Y y){\n"+ //$NON-NLS-1$
			"    y.zork();\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project2
		//----------------------------
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		IPath c2 = env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"import p3.Z;\n"+ //$NON-NLS-1$
			"public class Y extends Z{\n"+ //$NON-NLS-1$
			"  public X zork(){\n"+ //$NON-NLS-1$
			"    X x = foo();\n"+ //$NON-NLS-1$
			"    x.bar(this);\n"+ //$NON-NLS-1$
			"    return x;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project3
		//----------------------------
		IPath p3 = env.addProject("P3"); //$NON-NLS-1$
		env.addExternalJars(p3, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p3, ""); //$NON-NLS-1$
		IPath root3 = env.addPackageFragmentRoot(p3, "src"); //$NON-NLS-1$
		env.setOutputFolder(p3, "bin"); //$NON-NLS-1$

		env.addClass(root3, "p3", "Z", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"public class Z {\n"+ //$NON-NLS-1$
			"  public X foo(){\n"+ //$NON-NLS-1$
			"    return null;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		// for Project1
		env.addRequiredProject(p1, p2);
		env.addRequiredProject(p1, p3);
		// for Project2
		env.addRequiredProject(p2, p1);
		env.addRequiredProject(p2, p3);
		// for Project3
		env.addRequiredProject(p3, p1);

		try {
			env.setBuildOrder(new String[]{"P1", "P2", "P3"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
			fullBuild();

			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y", "p3.Z", "p1.X"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$ //$NON-NLS-6$//$NON-NLS-7$
			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$

			env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
				"package p1;\n"+ //$NON-NLS-1$
				"import p2.Y;\n"+ //$NON-NLS-1$
				"public class X {\n"+ //$NON-NLS-1$
				"  public void bar(Y y, int i){\n"+ //$NON-NLS-1$
				"    y.zork();\n"+ //$NON-NLS-1$
				"  }\n"+ //$NON-NLS-1$
				"}\n" //$NON-NLS-1$
				);
			incrementalBuild();

			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z"}); //$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemsFor(p2,new Problem[]{
					new Problem("p2", "The method bar(Y, int) in the type X is not applicable for the arguments (Y)", c2, 106, 109, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
					new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});
			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$

			JavaCore.setOptions(options);
		} finally {
			env.setBuildOrder(null);
		}
	}
	public void testCycle4() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		Hashtable newOptions = JavaCore.getOptions();
		newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING); //$NON-NLS-1$

		JavaCore.setOptions(newOptions);

		//----------------------------
		//         Project1
		//----------------------------
		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		//----------------------------
		//         Project2
		//----------------------------
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		IPath c2 = env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"import p3.Z;\n"+ //$NON-NLS-1$
			"public class Y extends Z{\n"+ //$NON-NLS-1$
			"  public X zork(){\n"+ //$NON-NLS-1$
			"    X x = foo();\n"+ //$NON-NLS-1$
			"    x.bar(this);\n"+ //$NON-NLS-1$
			"    return x;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project3
		//----------------------------
		IPath p3 = env.addProject("P3"); //$NON-NLS-1$
		env.addExternalJars(p3, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p3, ""); //$NON-NLS-1$
		IPath root3 = env.addPackageFragmentRoot(p3, "src"); //$NON-NLS-1$
		env.setOutputFolder(p3, "bin"); //$NON-NLS-1$

		IPath c3 = env.addClass(root3, "p3", "Z", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n"+ //$NON-NLS-1$
			"import p1.X;\n"+ //$NON-NLS-1$
			"public class Z {\n"+ //$NON-NLS-1$
			"  public X foo(){\n"+ //$NON-NLS-1$
			"    return null;\n"+ //$NON-NLS-1$
			"  }\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		// for Project1
		env.addRequiredProject(p1, p2);
		env.addRequiredProject(p1, p3);
		// for Project2
		env.addRequiredProject(p2, p1);
		env.addRequiredProject(p2, p3);
		// for Project3
		env.addRequiredProject(p3, p1);

		try {
			env.setBuildOrder(new String[]{"P1", "P2", "P3"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
			fullBuild();

			expectingCompilingOrder(new String[]{"p2.Y", "p3.Z", "p2.Y"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$
			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemsFor(p2,new Problem[]{
				new Problem("p2", "X cannot be resolved to a type", c2, 87, 88, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "The method foo() from the type Z refers to the missing type X", c2, 93, 96, CategorizedProblem.CAT_MEMBER, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "The import p1 cannot be resolved", c2, 19, 21, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "X cannot be resolved to a type", c2, 73, 74, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});
			expectingOnlySpecificProblemsFor(p3,new Problem[]{
				new Problem("p3", "X cannot be resolved to a type", c3, 51, 52, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p3", "The import p1 cannot be resolved", c3, 19, 21, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});

			env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
				"package p1;\n"+ //$NON-NLS-1$
				"import p2.Y;\n"+ //$NON-NLS-1$
				"public class X {\n"+ //$NON-NLS-1$
				"  public void bar(Y y){\n"+ //$NON-NLS-1$
				"    y.zork();\n"+ //$NON-NLS-1$
				"  }\n"+ //$NON-NLS-1$
				"}\n" //$NON-NLS-1$
				);
			incrementalBuild();
			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p3.Z", "p1.X", "p2.Y"}); //$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$
			expectingOnlySpecificProblemFor(p1,new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemFor(p2,new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$
			expectingOnlySpecificProblemFor(p3,new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING));//$NON-NLS-1$ //$NON-NLS-2$

			JavaCore.setOptions(options);
		} finally {
			env.setBuildOrder(null);
		}
	}

	public void testCycle5() throws JavaModelException {
		Hashtable options = JavaCore.getOptions();
		Hashtable newOptions = JavaCore.getOptions();
		newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING); //$NON-NLS-1$

		JavaCore.setOptions(newOptions);

		//----------------------------
		//         Project1
		//----------------------------
		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		IPath c1 = env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
			"package p1;\n"+ //$NON-NLS-1$
			"import p2.*;\n"+ //$NON-NLS-1$
			"import p22.*;\n"+ //$NON-NLS-1$
			"public class X {\n"+ //$NON-NLS-1$
			"  Y y;\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		//----------------------------
		//         Project2
		//----------------------------
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		IPath c2 = env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"import p1.*;\n"+ //$NON-NLS-1$
			"import p11.*;\n"+ //$NON-NLS-1$
			"public class Y {\n"+ //$NON-NLS-1$
			"  X x;\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);


		// for Project1
		env.addRequiredProject(p1, p2);
		// for Project2
		env.addRequiredProject(p2, p1);

		try {
			env.setBuildOrder(new String[]{"P1", "P2"});//$NON-NLS-1$ //$NON-NLS-2$
			fullBuild();

			expectingCompilingOrder(new String[]{"p1.X", "p2.Y", "p1.X", "p2.Y"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$
			expectingOnlySpecificProblemsFor(p1,new Problem[]{
				new Problem("p1", "The import p22 cannot be resolved", c1, 32, 35, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});
			expectingOnlySpecificProblemsFor(p2,new Problem[]{
				new Problem("p2", "The import p11 cannot be resolved", c2, 32, 35, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});

			env.addClass(root1, "p11", "XX", //$NON-NLS-1$ //$NON-NLS-2$
				"package p11;\n"+ //$NON-NLS-1$
				"public class XX {\n"+ //$NON-NLS-1$
				"}\n" //$NON-NLS-1$
				);
			env.addClass(root2, "p22", "YY", //$NON-NLS-1$ //$NON-NLS-2$
				"package p22;\n"+ //$NON-NLS-1$
				"public class YY {\n"+ //$NON-NLS-1$
				"}\n" //$NON-NLS-1$
				);

			incrementalBuild();

			expectingCompilingOrder(new String[]{"p11.XX", "p22.YY", "p2.Y", "p1.X"});//$NON-NLS-1$ //$NON-NLS-2$//$NON-NLS-3$ //$NON-NLS-4$
			expectingOnlySpecificProblemsFor(p1,new Problem[]{
				new Problem("p1", "The import p22 is never used", c1, 32, 35, CategorizedProblem.CAT_UNNECESSARY_CODE, IMarker.SEVERITY_WARNING),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});
			expectingOnlySpecificProblemsFor(p2,new Problem[]{
				new Problem("p2", "The import p11 is never used", c2, 32, 35, CategorizedProblem.CAT_UNNECESSARY_CODE, IMarker.SEVERITY_WARNING),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
			});

			JavaCore.setOptions(options);
		} finally {
			env.setBuildOrder(null);
		}
	}

// https://bugs.eclipse.org/bugs/show_bug.cgi?id=114349
// this one fails; compare with testCycle7 (only one change in Object source),
// which passes
public void testCycle6() throws JavaModelException {
	Hashtable options = JavaCore.getOptions();
	Hashtable newOptions = JavaCore.getOptions();
	newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING);

	JavaCore.setOptions(newOptions);

	//----------------------------
	//         Project1
	//----------------------------
	IPath p1 = env.addProject("P1");
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p1, "");
	IPath root1 = env.addPackageFragmentRoot(p1, "src");
	env.setOutputFolder(p1, "bin");

	env.addClass(root1, "java/lang", "Object",
		"package java.lang;\n" +
		"public class Object {\n" +
		"  Class getClass() { return null; }\n" +
		"  String toString() { return \"\"; }\n" +	// the line that changes
		"}\n"
		);

	//----------------------------
	//         Project2
	//----------------------------
	IPath p2 = env.addProject("P2");
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p2, "");
	IPath root2 = env.addPackageFragmentRoot(p2, "src");
	env.setOutputFolder(p2, "bin");

	env.addClass(root2, "java/lang", "Class",
		"package java.lang;\n" +
		"public class Class {\n" +
		"  String getName() { return \"\"; };\n" +
		"}\n"
		);

	//----------------------------
	//         Project3
	//----------------------------
	IPath p3 = env.addProject("P3");
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p3, "");
	IPath root3 = env.addPackageFragmentRoot(p3, "src");
	env.setOutputFolder(p3, "bin");

	env.addClass(root3, "java/lang", "String",
		"package java.lang;\n" +
		"public class String {\n" +
		"}\n"
		);

	// Dependencies
	IPath[] accessiblePaths = new IPath[] {new Path("java/lang/*")};
	IPath[] forbiddenPaths = new IPath[] {new Path("**/*")};
	env.addRequiredProject(p1, p2, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p1, p3, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p2, p1, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p2, p3, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p3, p1, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p3, p2, accessiblePaths, forbiddenPaths, false);

	try {
		fullBuild();

		expectingOnlySpecificProblemsFor(p1,new Problem[]{
			new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
		});
		expectingOnlySpecificProblemsFor(p2,new Problem[]{
			new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
		});
		expectingOnlySpecificProblemsFor(p3,new Problem[]{
			new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
		});

	} finally {
		JavaCore.setOptions(options);
	}
}

// https://bugs.eclipse.org/bugs/show_bug.cgi?id=114349
// this one passes; compare with testCycle6 (only one change in Object source),
// which fails
public void testCycle7() throws JavaModelException {
	Hashtable options = JavaCore.getOptions();
	Hashtable newOptions = JavaCore.getOptions();
	newOptions.put(JavaCore.CORE_CIRCULAR_CLASSPATH, JavaCore.WARNING);

	JavaCore.setOptions(newOptions);

	//----------------------------
	//         Project1
	//----------------------------
	IPath p1 = env.addProject("P1");
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p1, "");
	IPath root1 = env.addPackageFragmentRoot(p1, "src");
	env.setOutputFolder(p1, "bin");

	env.addClass(root1, "java/lang", "Object",
		"package java.lang;\n" +
		"public class Object {\n" +
		"  Class getClass() { return null; }\n" +
		"  String toString() { return null; }\n" +	// the line that changes
		"}\n"
		);

	//----------------------------
	//         Project2
	//----------------------------
	IPath p2 = env.addProject("P2");
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p2, "");
	IPath root2 = env.addPackageFragmentRoot(p2, "src");
	env.setOutputFolder(p2, "bin");

	env.addClass(root2, "java/lang", "Class",
		"package java.lang;\n" +
		"public class Class {\n" +
		"  String getName() { return \"\"; };\n" +
		"}\n"
		);

	//----------------------------
	//         Project3
	//----------------------------
	IPath p3 = env.addProject("P3");
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p3, "");
	IPath root3 = env.addPackageFragmentRoot(p3, "src");
	env.setOutputFolder(p3, "bin");

	env.addClass(root3, "java/lang", "String",
		"package java.lang;\n" +
		"public class String {\n" +
		"}\n"
		);

	// Dependencies
	IPath[] accessiblePaths = new IPath[] {new Path("java/lang/*")};
	IPath[] forbiddenPaths = new IPath[] {new Path("**/*")};
	env.addRequiredProject(p1, p2, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p1, p3, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p2, p1, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p2, p3, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p3, p1, accessiblePaths, forbiddenPaths, false);
	env.addRequiredProject(p3, p2, accessiblePaths, forbiddenPaths, false);

	try {
		fullBuild();

		expectingOnlySpecificProblemsFor(p1,new Problem[]{
			new Problem("p1", "A cycle was detected in the build path of project 'P1'. The cycle consists of projects {P1, P2, P3}", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
		});
		expectingOnlySpecificProblemsFor(p2,new Problem[]{
			new Problem("p2", "A cycle was detected in the build path of project 'P2'. The cycle consists of projects {P1, P2, P3}", p2, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
		});
		expectingOnlySpecificProblemsFor(p3,new Problem[]{
			new Problem("p3", "A cycle was detected in the build path of project 'P3'. The cycle consists of projects {P1, P2, P3}", p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_WARNING)//$NON-NLS-1$ //$NON-NLS-2$
		});

	} finally {
		JavaCore.setOptions(options);
	}
}

	/*
	 * Full buid case
	 */
	public void testExcludePartOfAnotherProject1() throws JavaModelException {
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p.api", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.api;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "p.internal", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.internal;\n" + //$NON-NLS-1$
			"public class B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path, new IPath[] {}, new IPath[] {new Path("**/internal/")}, false);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C extends p.api.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		IPath d = env.addClass(root2, "", "D", //$NON-NLS-1$ //$NON-NLS-2$
			"public class D extends p.internal.B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingSpecificProblemFor(project2Path, new Problem("", "Access restriction: The type B is not accessible due to restriction on required project Project1", d, 23, 35, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$
	}

	/*
	 * Incremental buid case
	 */
	public void testExcludePartOfAnotherProject2() throws JavaModelException {
		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p.api", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.api;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "p.internal", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.internal;\n" + //$NON-NLS-1$
			"public class B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path, new IPath[] {}, new IPath[] {new Path("**/internal/")}, false);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C extends p.api.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingNoProblems();

		//----------------------------
		//           Step 2
		//----------------------------
		IPath d = env.addClass(root2, "", "D", //$NON-NLS-1$ //$NON-NLS-2$
			"public class D extends p.internal.B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		incrementalBuild();
		expectingSpecificProblemFor(project2Path, new Problem("", "Access restriction: The type B is not accessible due to restriction on required project Project1", d, 23, 35, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$
	}

	/*
	 * Fix access restriction problem
	 */
	public void testExcludePartOfAnotherProject3() throws JavaModelException {
		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p.api", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.api;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "p.internal", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.internal;\n" + //$NON-NLS-1$
			"public class B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path, new IPath[] {}, new IPath[] {new Path("**/internal/")}, false);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C extends p.api.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		IPath d = env.addClass(root2, "", "D", //$NON-NLS-1$ //$NON-NLS-2$
			"public class D extends p.internal.B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingSpecificProblemFor(project2Path, new Problem("", "Access restriction: The type B is not accessible due to restriction on required project Project1", d, 23, 35, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$

		//----------------------------
		//           Step 2
		//----------------------------
		env.removeRequiredProject(project2Path, project1Path);
		env.addRequiredProject(project2Path, project1Path, new IPath[] {}, new IPath[] {}, false);

		incrementalBuild();
		expectingNoProblems();
	}

	/*
	 * Full buid case
	 */
	public void testIncludePartOfAnotherProject1() throws JavaModelException {
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p.api", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.api;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "p.internal", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.internal;\n" + //$NON-NLS-1$
			"public class B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path, new IPath[] {new Path("**/api/")}, new IPath[] {new Path("**")}, false);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C extends p.api.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		IPath d = env.addClass(root2, "", "D", //$NON-NLS-1$ //$NON-NLS-2$
			"public class D extends p.internal.B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingSpecificProblemFor(project2Path, new Problem("", "Access restriction: The type B is not accessible due to restriction on required project Project1", d, 23, 35, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$
	}

	/*
	 * Incremental buid case
	 */
	public void testIncludePartOfAnotherProject2() throws JavaModelException {
		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p.api", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.api;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "p.internal", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.internal;\n" + //$NON-NLS-1$
			"public class B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path, new IPath[] {new Path("**/api/")}, new IPath[] {new Path("**")}, false);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C extends p.api.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingNoProblems();

		//----------------------------
		//           Step 2
		//----------------------------
		IPath d = env.addClass(root2, "", "D", //$NON-NLS-1$ //$NON-NLS-2$
			"public class D extends p.internal.B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		incrementalBuild();
		expectingSpecificProblemFor(project2Path, new Problem("", "Access restriction: The type B is not accessible due to restriction on required project Project1", d, 23, 35, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$
	}

	/*
	 * Fix access restriction problem
	 */
	public void testIncludePartOfAnotherProject3() throws JavaModelException {
		//----------------------------
		//           Step 1
		//----------------------------
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p.api", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.api;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		env.addClass(root1, "p.internal", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p.internal;\n" + //$NON-NLS-1$
			"public class B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		env.addRequiredProject(project2Path, project1Path, new IPath[] {new Path("**/api/")}, new IPath[] {new Path("**")}, false);
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "", "C", //$NON-NLS-1$ //$NON-NLS-2$
			"public class C extends p.api.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);
		IPath d = env.addClass(root2, "", "D", //$NON-NLS-1$ //$NON-NLS-2$
			"public class D extends p.internal.B {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingSpecificProblemFor(project2Path, new Problem("", "Access restriction: The type B is not accessible due to restriction on required project Project1", d, 23, 35, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_ERROR)); //$NON-NLS-1$ //$NON-NLS-2$

		//----------------------------
		//           Step 2
		//----------------------------
		env.removeRequiredProject(project2Path, project1Path);
		env.addRequiredProject(project2Path, project1Path, new IPath[] {}, new IPath[] {}, false);

		incrementalBuild();
		expectingNoProblems();
	}

	/*
	 * Ensures that a type matching a ignore-if-better non-accessible rule is further found when accessible
	 * on another classpath entry.
	 * (regression test for bug 98127 Access restrictions started showing up after switching to bundle)
	 */
	public void testIgnoreIfBetterNonAccessibleRule1() throws JavaModelException {
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "p", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project3
			//----------------------------
		IPath project3Path = env.addProject("Project3"); //$NON-NLS-1$
		env.addExternalJars(project3Path, Util.getJavaClassLibs());
		env.addRequiredProject(project3Path, project1Path, new Path("**/p/"), IAccessRule.K_NON_ACCESSIBLE | IAccessRule.IGNORE_IF_BETTER);
		env.addRequiredProject(project3Path, project2Path, new Path("**/p/A"), IAccessRule.K_ACCESSIBLE);
		IPath root3 = env.getPackageFragmentRootPath(project3Path, ""); //$NON-NLS-1$
		env.addClass(root3, "p3", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n" + //$NON-NLS-1$
			"public class B extends p.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingNoProblems();
	}

	/*
	 * Ensures that a type matching a ignore-if-better non-accessible rule is further found when accessible
	 * on another classpath entry.
	 * (regression test for bug 98127 Access restrictions started showing up after switching to bundle)
	 */
	public void testIgnoreIfBetterNonAccessibleRule2() throws JavaModelException {
			//----------------------------
			//         Project1
			//----------------------------
		IPath project1Path = env.addProject("Project1"); //$NON-NLS-1$
		env.addExternalJars(project1Path, Util.getJavaClassLibs());
		IPath root1 = env.getPackageFragmentRootPath(project1Path, ""); //$NON-NLS-1$
		env.addClass(root1, "p", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project2
			//----------------------------
		IPath project2Path = env.addProject("Project2"); //$NON-NLS-1$
		env.addExternalJars(project2Path, Util.getJavaClassLibs());
		IPath root2 = env.getPackageFragmentRootPath(project2Path, ""); //$NON-NLS-1$
		env.addClass(root2, "p", "A", //$NON-NLS-1$ //$NON-NLS-2$
			"package p;\n" + //$NON-NLS-1$
			"public class A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

			//----------------------------
			//         Project3
			//----------------------------
		IPath project3Path = env.addProject("Project3"); //$NON-NLS-1$
		env.addExternalJars(project3Path, Util.getJavaClassLibs());
		env.addRequiredProject(project3Path, project1Path, new Path("**/p/"), IAccessRule.K_NON_ACCESSIBLE | IAccessRule.IGNORE_IF_BETTER);
		env.addRequiredProject(project3Path, project2Path, new Path("**/p/A"), IAccessRule.K_DISCOURAGED);
		IPath root3 = env.getPackageFragmentRootPath(project3Path, ""); //$NON-NLS-1$
		IPath b = env.addClass(root3, "p3", "B", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n" + //$NON-NLS-1$
			"public class B extends p.A {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		fullBuild();
		expectingSpecificProblemFor(project3Path, new Problem("", "Discouraged access: The type A is not accessible due to restriction on required project Project2", b, 35, 38, CategorizedProblem.CAT_RESTRICTION, IMarker.SEVERITY_WARNING)); //$NON-NLS-1$ //$NON-NLS-2$
	}

	public void testMissingRequiredBinaries() throws JavaModelException {

		IPath p1 = env.addProject("P1"); //$NON-NLS-1$
		IPath p2 = env.addProject("P2"); //$NON-NLS-1$
		IPath p3 = env.addProject("P3"); //$NON-NLS-1$

		env.addExternalJars(p1, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p1, ""); //$NON-NLS-1$
		IPath root1 = env.addPackageFragmentRoot(p1, "src"); //$NON-NLS-1$
		env.addRequiredProject(p1, p2);
		env.setOutputFolder(p1, "bin"); //$NON-NLS-1$

		env.addExternalJars(p2, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p2, ""); //$NON-NLS-1$
		IPath root2 = env.addPackageFragmentRoot(p2, "src"); //$NON-NLS-1$
		env.addRequiredProject(p2, p3);
		env.setOutputFolder(p2, "bin"); //$NON-NLS-1$

		env.addExternalJars(p3, Util.getJavaClassLibs());
		// remove old package fragment root so that names don't collide
		env.removePackageFragmentRoot(p3, ""); //$NON-NLS-1$
		IPath root3 = env.addPackageFragmentRoot(p3, "src"); //$NON-NLS-1$
		env.setOutputFolder(p3, "bin"); //$NON-NLS-1$

		IPath x = env.addClass(root1, "p1", "X", //$NON-NLS-1$ //$NON-NLS-2$
			"package p1;\n"+ //$NON-NLS-1$
			"import p2.*;\n"+ //$NON-NLS-1$
			"public class X extends Y{\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		env.addClass(root2, "p2", "Y", //$NON-NLS-1$ //$NON-NLS-2$
			"package p2;\n"+ //$NON-NLS-1$
			"import p3.*;\n"+ //$NON-NLS-1$
			"public class Y extends Z {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		env.addClass(root3, "p3", "Z", //$NON-NLS-1$ //$NON-NLS-2$
			"package p3;\n"+ //$NON-NLS-1$
			"public class Z {\n"+ //$NON-NLS-1$
			"}\n" //$NON-NLS-1$
			);

		try {
			fullBuild();

			expectingOnlySpecificProblemsFor(p1,new Problem[]{
				new Problem("p1", "The type p3.Z cannot be resolved. It is indirectly referenced from required .class files", x, 48, 49, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_ERROR),//$NON-NLS-1$ //$NON-NLS-2$
				new Problem("p1", "The project was not built since its build path is incomplete. Cannot find the class file for p3.Z. Fix the build path then try building this project", p1, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_ERROR)//$NON-NLS-1$ //$NON-NLS-2$
			});
		} finally {
			env.setBuildOrder(null);
		}
	}

// https://bugs.eclipse.org/bugs/show_bug.cgi?id=159118
// contrast this with test101: get an error when the class folder is not
// exported from the target project - P1 here
public void test100_class_folder_exported() throws JavaModelException {
	IPath P1 = env.addProject("P1");
	env.setOutputFolder(P1, "bin");
	env.addExternalJars(P1, Util.getJavaClassLibs());
	env.addClass(
		env.addPackage(
			env.getPackageFragmentRootPath(P1, ""), "p"),
		"A",
		"package p;\n" +
		"public class A {\n" +
		"}\n"
		);
	fullBuild();
	expectingNoProblems();
	env.removePackageFragmentRoot(P1, "");
	env.addClassFolder(P1, P1.append("bin"), true);
	IPath P2 = env.addProject("P2");
	env.addExternalJars(P2, Util.getJavaClassLibs());
	env.addRequiredProject(P2, P1);
	env.addClass(
		env.getPackageFragmentRootPath(P2, ""),
		"X",
		"import p.A;\n" +
		"public class X {\n" +
		"  A f;\n" +
		"}");
	fullBuild();
	expectingNoProblems();
}

// https://bugs.eclipse.org/bugs/show_bug.cgi?id=159118
// contrast this with test100: get an error when the class folder is not
// exported from the target project - P1 here
public void test101_class_folder_non_exported() throws JavaModelException {
	IPath P1 = env.addProject("P1");
	env.setOutputFolder(P1, "bin");
	env.addExternalJars(P1, Util.getJavaClassLibs());
	env.addClass(
		env.addPackage(
			env.getPackageFragmentRootPath(P1, ""), "p"),
		"A",
		"package p;\n" +
		"public class A {\n" +
		"}\n"
		);
	fullBuild();
	expectingNoProblems();
	env.removePackageFragmentRoot(P1, "");
	env.addClassFolder(P1, P1.append("bin"), false);
	IPath P2 = env.addProject("P2");
	env.addExternalJars(P2, Util.getJavaClassLibs());
	env.addRequiredProject(P2, P1);
	IPath c = env.addClass(
		env.getPackageFragmentRootPath(P2, ""),
		"X",
		"import p.A;\n" +
		"public class X {\n" +
		"  A f;\n" +
		"}");
	fullBuild();
	expectingSpecificProblemsFor(P2,
		new Problem[] {
			new Problem("", "The import p cannot be resolved",
					c, 7 , 8, CategorizedProblem.CAT_IMPORT, IMarker.SEVERITY_ERROR),
			new Problem("", "A cannot be resolved to a type",
					c, 31 , 32, CategorizedProblem.CAT_TYPE, IMarker.SEVERITY_ERROR)});
}

// https://bugs.eclipse.org/bugs/show_bug.cgi?id=164622
public void test102_missing_required_binaries() throws JavaModelException {

	IPath p1 = env.addProject("P1");
	env.addExternalJars(p1, Util.getJavaClassLibs());
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p1, "");
	IPath root1 = env.addPackageFragmentRoot(p1, "src");
	env.setOutputFolder(p1, "bin");

	IPath p2 = env.addProject("P2");
	env.addExternalJars(p2, Util.getJavaClassLibs());
	env.removePackageFragmentRoot(p2, "");
	IPath root2 = env.addPackageFragmentRoot(p2, "src");
	env.addRequiredProject(p2, p1);
	env.setOutputFolder(p2, "bin");

	IPath p3 = env.addProject("P3");
	env.addExternalJars(p3, Util.getJavaClassLibs());
	env.removePackageFragmentRoot(p3, "");
	IPath root3 = env.addPackageFragmentRoot(p3, "src");
//	env.addRequiredProject(p3, p1); - missing dependency
	env.addRequiredProject(p3, p2);
	env.setOutputFolder(p3, "bin");

	env.addClass(root1, "", "I",
		"public interface I {\n" +
		"}\n"
		);

	env.addClass(root2, "", "X",
		"public class X implements I {\n" +
		"}\n"
		);

	IPath y = env.addClass(root3, "", "Y",
		"public class Y extends X {\n" +
		"  X m = new X() {};\n" +
		"}\n"
		);

	try {
		fullBuild();
		expectingOnlySpecificProblemsFor(p3, new Problem[]{
			new Problem("p3",
				"The project was not built since its build path is incomplete. Cannot find the class file for I. Fix the build path then try building this project",
				p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_ERROR),
			new Problem("p3",
				"The type I cannot be resolved. It is indirectly referenced from required .class files",
				y, 23, 24, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_ERROR),
		});
	} finally {
		env.setBuildOrder(null);
	}
}

// https://bugs.eclipse.org/bugs/show_bug.cgi?id=164622
public void test103_missing_required_binaries() throws JavaModelException {

	IPath p1 = env.addProject("P1");
	env.addExternalJars(p1, Util.getJavaClassLibs());
	// remove old package fragment root so that names don't collide
	env.removePackageFragmentRoot(p1, "");
	IPath root1 = env.addPackageFragmentRoot(p1, "src");
	env.setOutputFolder(p1, "bin");

	IPath p2 = env.addProject("P2");
	env.addExternalJars(p2, Util.getJavaClassLibs());
	env.removePackageFragmentRoot(p2, "");
	IPath root2 = env.addPackageFragmentRoot(p2, "src");
	env.addRequiredProject(p2, p1);
	env.setOutputFolder(p2, "bin");

	IPath p3 = env.addProject("P3");
	env.addExternalJars(p3, Util.getJavaClassLibs());
	env.removePackageFragmentRoot(p3, "");
	IPath root3 = env.addPackageFragmentRoot(p3, "src");
//	env.addRequiredProject(p3, p1); - missing dependency
	env.addRequiredProject(p3, p2);
	env.setOutputFolder(p3, "bin");

	env.addClass(root1, "", "I",
		"public interface I {\n" +
		"}\n"
		);

	env.addClass(root2, "", "X",
		"public class X implements I {\n" +
		"}\n"
		);

	IPath y = env.addClass(root3, "", "Y",
		"public class Y {\n" +
		"  X m = new X() {};\n" +
		"  X n = new X() {};\n" +
		"}\n"
		);

	try {
		fullBuild();
		expectingOnlySpecificProblemsFor(p3, new Problem[]{
				new Problem("p3",
					"The project was not built since its build path is incomplete. Cannot find the class file for I. Fix the build path then try building this project",
					p3, -1, -1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_ERROR),
				new Problem("p3",
					"The type I cannot be resolved. It is indirectly referenced from required .class files",
					y, 0, 1, CategorizedProblem.CAT_BUILDPATH, IMarker.SEVERITY_ERROR),
		});
	} finally {
		env.setBuildOrder(null);
	}
}
}