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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.adt.internal.launch.junit;
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jdt.core.IClassFile;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMember;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.junit.util.TestSearchEngine;
/**
* A {@link PropertyTester} that checks if selected elements can be run as Android
* JUnit tests.
* <p/>
* Based on org.eclipse.jdt.internal.junit.JUnitPropertyTester. The only substantial difference in
* this implementation is source folders cannot be run as Android JUnit.
*/
@SuppressWarnings("restriction")
public class AndroidJUnitPropertyTester extends PropertyTester {
private static final String PROPERTY_IS_TEST = "isTest"; //$NON-NLS-1$
private static final String PROPERTY_CAN_LAUNCH_AS_JUNIT_TEST = "canLaunchAsJUnit"; //$NON-NLS-1$
/* (non-Javadoc)
* @see org.eclipse.jdt.internal.corext.refactoring.participants.properties.IPropertyEvaluator#test(java.lang.Object, java.lang.String, java.lang.String)
*/
@Override
public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
if (!(receiver instanceof IAdaptable)) {
final String elementName = (receiver == null ? "null" : //$NON-NLS-1$
receiver.getClass().getName());
throw new IllegalArgumentException(
String.format("Element must be of type IAdaptable, is %s", //$NON-NLS-1$
elementName));
}
IJavaElement element;
if (receiver instanceof IJavaElement) {
element = (IJavaElement) receiver;
} else if (receiver instanceof IResource) {
element = JavaCore.create((IResource) receiver);
if (element == null) {
return false;
}
} else { // is IAdaptable
element= (IJavaElement) ((IAdaptable) receiver).getAdapter(IJavaElement.class);
if (element == null) {
IResource resource = (IResource) ((IAdaptable) receiver).getAdapter(
IResource.class);
element = JavaCore.create(resource);
if (element == null) {
return false;
}
}
}
if (PROPERTY_IS_TEST.equals(property)) {
return isJUnitTest(element);
} else if (PROPERTY_CAN_LAUNCH_AS_JUNIT_TEST.equals(property)) {
return canLaunchAsJUnitTest(element);
}
throw new IllegalArgumentException(
String.format("Unknown test property '%s'", property)); //$NON-NLS-1$
}
private boolean canLaunchAsJUnitTest(IJavaElement element) {
try {
switch (element.getElementType()) {
case IJavaElement.JAVA_PROJECT:
return true; // can run, let JDT detect if there are tests
case IJavaElement.PACKAGE_FRAGMENT_ROOT:
return false; // not supported by Android test runner
case IJavaElement.PACKAGE_FRAGMENT:
return ((IPackageFragment) element).hasChildren();
case IJavaElement.COMPILATION_UNIT:
case IJavaElement.CLASS_FILE:
case IJavaElement.TYPE:
case IJavaElement.METHOD:
return isJUnitTest(element);
default:
return false;
}
} catch (JavaModelException e) {
return false;
}
}
/**
* Return whether the target resource is a JUnit test.
*/
private boolean isJUnitTest(IJavaElement element) {
try {
IType testType = null;
if (element instanceof ICompilationUnit) {
testType = (((ICompilationUnit) element)).findPrimaryType();
} else if (element instanceof IClassFile) {
testType = (((IClassFile) element)).getType();
} else if (element instanceof IType) {
testType = (IType) element;
} else if (element instanceof IMember) {
testType = ((IMember) element).getDeclaringType();
}
if (testType != null && testType.exists()) {
return TestSearchEngine.isTestOrTestSuite(testType);
}
} catch (CoreException e) {
// ignore, return false
}
return false;
}
}
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