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/*******************************************************************************
 * Copyright (c) 2006, 2011 Intel Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * Intel Corporation - Initial API and implementation
 *******************************************************************************/

/**********************************************************************
 * These tests are for the default dependency calculators
 **********************************************************************/

package org.eclipse.cdt.managedbuilder.core.tests;

import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;

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

import org.eclipse.cdt.managedbuilder.core.IManagedBuildInfo;
import org.eclipse.cdt.managedbuilder.core.ManagedBuildManager;
import org.eclipse.cdt.managedbuilder.projectconverter.UpdateManagedProjectManager;
import org.eclipse.cdt.managedbuilder.testplugin.CTestPlugin;
import org.eclipse.cdt.managedbuilder.testplugin.ManagedBuildTestHelper;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IncrementalProjectBuilder;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Path;
import org.eclipse.ui.dialogs.IOverwriteQuery;

public class ManagedBuildDependencyCalculatorTests extends TestCase {
	private IPath resourcesLocation = new Path(
			CTestPlugin.getFileInPlugin(new Path("resources/depCalcProjects/")).getAbsolutePath());

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

	public static Test suite() {
		TestSuite suite = new TestSuite(ManagedBuildDependencyCalculatorTests.class.getName());

		suite.addTest(new ManagedBuildDependencyCalculatorTests("test1DepCalc2"));
		suite.addTest(new ManagedBuildDependencyCalculatorTests("test1DepCalc3"));
		suite.addTest(new ManagedBuildDependencyCalculatorTests("test1DepCalcPreBuild"));
		return suite;
	}

	private IProject[] createProject(String projName, IPath location, String projectTypeId, boolean containsZip) {
		ArrayList<IProject> projectList = null;
		if (containsZip) {
			File testDir = CTestPlugin.getFileInPlugin(new Path("resources/depCalcProjects/" + projName));
			if (testDir == null) {
				fail("Test project directory " + projName + " is missing.");
				return null;
			}

			File projectZips[] = testDir.listFiles(new FileFilter() {
				@Override
				public boolean accept(File pathname) {
					if (pathname.isDirectory())
						return false;
					return true;
				}
			});

			projectList = new ArrayList<IProject>(projectZips.length);
			for (int i = 0; i < projectZips.length; i++) {
				try {
					String projectName = projectZips[i].getName();
					if (!projectName.endsWith(".zip"))
						continue;

					projectName = projectName.substring(0, projectName.length() - ".zip".length());
					if (projectName.length() == 0)
						continue;
					IProject project = ManagedBuildTestHelper.createProject(projectName, projectZips[i], location,
							projectTypeId);
					if (project != null)
						projectList.add(project);
				} catch (Exception e) {
				}
			}
			if (projectList.size() == 0) {
				fail("No projects found in test project directory " + testDir.getName()
						+ ".  The .zip file may be missing or corrupt.");
				return null;
			}
		} else {
			try {
				IProject project = ManagedBuildTestHelper.createProject(projName, null, location, projectTypeId);
				if (project != null)
					projectList = new ArrayList<IProject>(1);
				projectList.add(project);
			} catch (Exception e) {
			}
		}

		return projectList.toArray(new IProject[projectList.size()]);
	}

	private IProject[] createProjects(String projName, IPath location, String projectTypeId, boolean containsZip) {

		//  In case the projects need to be updated...
		IOverwriteQuery queryALL = new IOverwriteQuery() {
			@Override
			public String queryOverwrite(String file) {
				return ALL;
			}
		};

		UpdateManagedProjectManager.setBackupFileOverwriteQuery(queryALL);
		UpdateManagedProjectManager.setUpdateProjectQuery(queryALL);

		IProject projects[] = createProject(projName, location, projectTypeId, containsZip);
		return projects;
	}

	private void buildProjectsWorker(IProject projects[], IPath[] files, boolean compareBenchmark) {
		if (projects == null || projects.length == 0)
			return;

		boolean succeeded = true;
		for (int i = 0; i < projects.length; i++) {
			IProject curProject = projects[i];

			IManagedBuildInfo info = ManagedBuildManager.getBuildInfo(curProject);

			//check whether the managed build info is converted
			boolean isCompatible = UpdateManagedProjectManager.isCompatibleProject(info);
			assertTrue(isCompatible);

			if (isCompatible) {
				// Build the project in order to generate the makefiles
				try {
					curProject.build(IncrementalProjectBuilder.INCREMENTAL_BUILD, null);
				} catch (CoreException e) {
					fail(e.getStatus().getMessage());
				} catch (OperationCanceledException e) {
					fail("the project \"" + curProject.getName() + "\" build was cancelled, exception message: "
							+ e.getMessage());
				}

				//compare the generated makefiles to their benchmarks
				if (files != null && files.length > 0) {
					if (i == 0) {
						String configName = info.getDefaultConfiguration().getName();
						IPath buildDir = Path.fromOSString(configName);
						if (compareBenchmark) {
							IPath benchmarkLocationBase = resourcesLocation.append(curProject.getName());
							IPath buildLocation = curProject.getLocation().append(buildDir);
							succeeded = ManagedBuildTestHelper.compareBenchmarks(curProject, buildLocation, files,
									benchmarkLocationBase);
						} else {
							succeeded = ManagedBuildTestHelper.verifyFilesDoNotExist(curProject, buildDir, files);
						}
					}
				}
			}
		}

		if (succeeded) { //  Otherwise leave the projects around for comparison
			for (int i = 0; i < projects.length; i++)
				ManagedBuildTestHelper.removeProject(projects[i].getName());
		}
	}

	// Build projects and compare benchmarks
	private void buildProjects(IProject projects[], IPath[] files) {
		buildProjectsWorker(projects, files, true);
	}

	/* (non-Javadoc)
	 * test for dependency calculation as a side-effect of compilation
	 */
	public void test1DepCalc2() {
		IPath[] makefiles = { Path.fromOSString("makefile"), Path.fromOSString("objects.mk"),
				Path.fromOSString("sources.mk"), Path.fromOSString("subdir.mk"),
				//  This file is different using Cygwin vs GCC
				//Path.fromOSString("main.d"),
				Path.fromOSString("Sources/subdir.mk"), Path.fromOSString("Sources/func1.d"),
				Path.fromOSString("Sources/func2.d"), Path.fromOSString("Sources/func4.d"),
				Path.fromOSString("Sources/sub sources/func 3.d"), Path.fromOSString("Sources/sub sources/subdir.mk") };
		IProject[] projects = createProjects("test1DepCalc2", null, null, true);
		buildProjects(projects, makefiles);
	}

	/* (non-Javadoc)
	 * test for dependency calculation using Echo, a 2nd conmpilation step, and post-processing
	 */
	public void test1DepCalc3() {
		IPath[] makefiles = { Path.fromOSString("makefile"), Path.fromOSString("objects.mk"),
				Path.fromOSString("sources.mk"), Path.fromOSString("subdir.mk"),
				//  This file is different using Cygwin vs GCC
				//Path.fromOSString("main.d"),
				Path.fromOSString("Sources/subdir.mk"), Path.fromOSString("Sources/func1.d"),
				Path.fromOSString("Sources/func2.d"), Path.fromOSString("Sources/func4.d"),
				Path.fromOSString("Sources/sub sources/func 3.d"), Path.fromOSString("Sources/sub sources/subdir.mk") };
		IProject[] projects = createProjects("test1DepCalc3", null, null, true);
		buildProjects(projects, makefiles);
	}

	/* (non-Javadoc)
	 * test for dependency calculation that uses a separate, pre-build, step to generate dependency files
	 */
	public void test1DepCalcPreBuild() {
		IPath[] makefiles = { Path.fromOSString("makefile"), Path.fromOSString("objects.mk"),
				Path.fromOSString("sources.mk"), Path.fromOSString("subdir.mk"),
				//  This file is different using Cygwin vs GCC
				//Path.fromOSString("main.d"),
				Path.fromOSString("Sources/subdir.mk"), Path.fromOSString("Sources/func1.d"),
				Path.fromOSString("Sources/func2.d"), Path.fromOSString("Sources/func4.d"),
				Path.fromOSString("Sources/sub sources/func 3.d"), Path.fromOSString("Sources/sub sources/subdir.mk") };
		IProject[] projects = createProjects("test1DepCalcPreBuild", null, null, true);
		buildProjects(projects, makefiles);
	}

}

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