/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* 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 org.apache.commons;
import junit.framework.TestCase;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.util.Messages;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Method;
/**
* A base class for VFS tests. Provides utility methods for locating
* test resources.
*
* @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
* @version $Revision: 485757 $ $Date: 2006-12-11 18:14:29 +0100 (Mo, 11 Dez 2006) $
*/
public abstract class AbstractVfsTestCase
extends TestCase
{
private static File baseDir;
/**
* Returns the name of the package containing a class.
*
* @return The . delimited package name, or an empty string if the class
* is in the default package.
*/
public static String getPackageName(final Class clazz)
{
final Package pkg = clazz.getPackage();
if (null != pkg)
{
return pkg.getName();
}
final String name = clazz.getName();
if (-1 == name.lastIndexOf("."))
{
return "";
}
else
{
return name.substring(0, name.lastIndexOf("."));
}
}
/**
* Locates a test resource, and asserts that the resource exists
*
* @param name path of the resource, relative to this test's base directory.
*/
public static File getTestResource(final String name)
{
return getTestResource(name, true);
}
/**
* Locates a test resource.
*
* @param name path of the resource, relative to this test's base directory.
*/
public static File getTestResource(final String name, final boolean mustExist)
{
File file = new File(getTestDirectoryFile(), name);
file = getCanonicalFile(file);
if (mustExist)
{
assertTrue("Test file \"" + file + "\" does not exist.", file.exists());
}
else
{
assertTrue("Test file \"" + file + "\" should not exist.", !file.exists());
}
return file;
}
/**
* Locates the base directory for this test.
*/
public static File getTestDirectoryFile()
{
if (baseDir == null)
{
// final String baseDirProp = System.getProperty("test.basedir");
final String baseDirProp = getTestDirectory();
baseDir = getCanonicalFile(new File(baseDirProp));
}
return baseDir;
}
public static String getTestDirectory()
{
return System.getProperty("test.basedir");
}
public static String getResourceTestDirectory()
{
return System.getProperty("test.basedir.res");
}
/**
* Locates a test directory, creating it if it does not exist.
*
* @param name path of the directory, relative to this test's base directory.
*/
public static File getTestDirectory(final String name)
{
File file = new File(getTestDirectoryFile(), name);
file = getCanonicalFile(file);
assertTrue("Test directory \"" + file + "\" does not exist or is not a directory.",
file.isDirectory() || file.mkdirs());
return file;
}
/**
* Makes a file canonical
*/
public static File getCanonicalFile(final File file)
{
try
{
return file.getCanonicalFile();
}
catch (IOException e)
{
return file.getAbsoluteFile();
}
}
/**
* Asserts that an exception chain contains the expected messages.
*
* @param messages The messages, in order. A null entry in this array
* indicates that the message should be ignored.
*/
public static void assertSameMessage(final String[] messages, final Throwable throwable)
{
Throwable current = throwable;
for (int i = 0; i < messages.length; i++)
{
String message = messages[i];
assertNotNull(current);
if (message != null)
{
assertEquals(message, current.getMessage());
}
// Get the next exception in the chain
current = getCause(current);
}
}
/**
* Returns the cause of an exception.
*/
public static Throwable getCause(Throwable throwable)
{
try
{
Method method = throwable.getClass().getMethod("getCause", null);
return (Throwable) method.invoke(throwable, null);
}
catch (Exception e)
{
return null;
}
}
/**
* Asserts that an exception contains the expected message.
*/
public static void assertSameMessage(final String code,
final Throwable throwable)
{
assertSameMessage(code, new Object[0], throwable);
}
/**
* Asserts that an exception contains the expected message.
*/
public static void assertSameMessage(final String code,
final Object[] params,
final Throwable throwable)
{
if (throwable instanceof FileSystemException)
{
final FileSystemException fse = (FileSystemException) throwable;
// Compare message code and params
assertEquals(code, fse.getCode());
assertEquals(params.length, fse.getInfo().length);
for (int i = 0; i < params.length; i++)
{
final Object param = params[i];
assertEquals(String.valueOf(param), fse.getInfo()[i]);
}
}
// Compare formatted message
final String message = Messages.getString(code, params);
assertEquals(message, throwable.getMessage());
}
/**
* Asserts that an exception contains the expected message.
*/
public static void assertSameMessage(final String code,
final Object param,
final Throwable throwable)
{
assertSameMessage(code, new Object[]{param}, throwable);
}
/**
* Compares 2 objects for equality, nulls are equal. Used by the test
* classes' equals() methods.
*/
public static boolean equals(final Object o1, final Object o2)
{
if (o1 == null && o2 == null)
{
return true;
}
if (o1 == null || o2 == null)
{
return false;
}
return o1.equals(o2);
}
}
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