/*******************************************************************************
* Copyright (c) 2010 Neil Bartlett.
* 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:
* Neil Bartlett - initial API and implementation
*******************************************************************************/
package bndtools.internal.testcaseselection;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.Flags;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchEngine;
import org.eclipse.jdt.core.search.SearchMatch;
import org.eclipse.jdt.core.search.SearchPattern;
import org.eclipse.jdt.core.search.SearchRequestor;
import org.eclipse.jface.operation.IRunnableContext;
import org.eclipse.jface.operation.IRunnableWithProgress;
import bndtools.internal.pkgselection.SearchUtils;
public class JavaSearchScopeTestCaseLister implements ITestCaseLister {
private final IJavaSearchScope scope;
private final IRunnableContext runContext;
public JavaSearchScopeTestCaseLister(IJavaSearchScope scope, IRunnableContext runContext) {
this.scope = scope;
this.runContext = runContext;
}
public String[] getTestCases(boolean includeNonSource, ITestCaseFilter filter) throws TestCaseListException {
final List<IJavaElement> testCaseList = new LinkedList<IJavaElement>();
search(Arrays.asList("junit.framework.TestCase", "junit.framework.TestSuite"), testCaseList); //$NON-NLS-1$ //$NON-NLS-2$
// Remove non-source and excludes
Set<String> testCaseNames = new LinkedHashSet<String>();
for (Iterator<IJavaElement> iter = testCaseList.iterator(); iter.hasNext();) {
boolean omit = false;
IJavaElement element = iter.next();
try {
IType type = (IType) element.getAncestor(IJavaElement.TYPE);
if (Flags.isAbstract(type.getFlags())) {
omit = true;
}
if (!includeNonSource) {
IPackageFragment pkgFragment = (IPackageFragment) element.getAncestor(IJavaElement.PACKAGE_FRAGMENT);
if (pkgFragment.getCompilationUnits().length == 0) {
omit = true;
}
}
} catch (JavaModelException e) {
throw new TestCaseListException(e);
}
String className = getClassName(element);
if (filter != null && !filter.select(className)) {
omit = true;
}
if (!omit) {
testCaseNames.add(className);
}
}
return testCaseNames.toArray(new String[testCaseNames.size()]);
}
private static String getClassName(IJavaElement element) {
IPackageFragment pkgFragment = (IPackageFragment) element.getAncestor(IJavaElement.PACKAGE_FRAGMENT);
String packageName = pkgFragment.getElementName();
if (packageName.length() > 0) {
return packageName + '.' + element.getElementName();
}
return element.getElementName();
}
public void search(List<String> types, final List<IJavaElement> testCaseList) throws TestCaseListException {
IRunnableWithProgress operation = new SearchOperation(types, testCaseList, scope);
try {
runContext.run(true, true, operation);
} catch (InvocationTargetException e) {
throw new TestCaseListException(e.getCause());
} catch (InterruptedException e) {
throw new TestCaseListException(Messages.JavaSearchScopeTestCaseLister_2);
}
}
private static class SearchOperation implements IRunnableWithProgress {
final List<String> types;
final List<IJavaElement> testCaseList;
final IJavaSearchScope scope;
public SearchOperation(List<String> types, List<IJavaElement> testCaseList, IJavaSearchScope scope) {
this.types = types;
this.testCaseList = testCaseList;
this.scope = scope;
}
private void search(List<String> types, final List<IJavaElement> testCaseList, IProgressMonitor monitor) throws TestCaseListException {
for (String type : types) {
List<String> newTypes = search(type, testCaseList, monitor);
if (!newTypes.isEmpty()) {
search(newTypes, testCaseList, monitor);
}
}
}
private List<String> search(String type, final List<IJavaElement> testCaseList, IProgressMonitor monitor) throws TestCaseListException {
SearchPattern pattern = SearchPattern.createPattern(type, IJavaSearchConstants.CLASS, IJavaSearchConstants.IMPLEMENTORS, SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE);
final List<String> typesFound = new ArrayList<String>();
SearchRequestor requestor = new SearchRequestor() {
@Override
public void acceptSearchMatch(SearchMatch match) throws CoreException {
IJavaElement enclosingElement = (IJavaElement) match.getElement();
if (!testCaseList.contains(enclosingElement)) {
typesFound.add(getClassName(enclosingElement));
}
testCaseList.add(enclosingElement);
}
};
try {
new SearchEngine().search(pattern, SearchUtils.getDefaultSearchParticipants(), scope, requestor, monitor);
} catch (CoreException e) {
throw new TestCaseListException(e);
}
return typesFound;
}
public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
try {
search(types, testCaseList, monitor);
} catch (TestCaseListException e) {
throw new InvocationTargetException(e);
}
}
}
}