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/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* SonarQube is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.test;
import java.io.File;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.nio.file.Files;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
/**
* Utilities for unit tests
*
* @since 2.2
*/
public final class TestUtils {
private TestUtils() {
}
/**
* Search for a test resource in the classpath. For example getResource("org/sonar/MyClass/foo.txt");
*
* @param path the starting slash is optional
* @return the resource. Null if resource not found
*/
public static File getResource(String path) {
String resourcePath = path;
if (!resourcePath.startsWith("/")) {
resourcePath = "/" + resourcePath;
}
URL url = TestUtils.class.getResource(resourcePath);
if (url != null) {
return FileUtils.toFile(url);
}
return null;
}
/**
* Search for a resource in the classpath. For example calling the method getResource(getClass(), "myTestName/foo.txt") from
* the class org.sonar.Foo loads the file $basedir/src/test/resources/org/sonar/Foo/myTestName/foo.txt
*
* @return the resource. Null if resource not found
*/
public static File getResource(Class baseClass, String path) {
String resourcePath = StringUtils.replaceChars(baseClass.getCanonicalName(), '.', '/');
if (!path.startsWith("/")) {
resourcePath += "/";
}
resourcePath += path;
return getResource(resourcePath);
}
/**
* Asserts that all constructors are private, usually for helper classes with
* only static methods. If a constructor does not have any parameters, then
* it's instantiated.
*/
public static boolean hasOnlyPrivateConstructors(Class clazz) {
boolean ok = true;
for (Constructor constructor : clazz.getDeclaredConstructors()) {
ok &= Modifier.isPrivate(constructor.getModifiers());
if (constructor.getParameterTypes().length == 0) {
constructor.setAccessible(true);
try {
constructor.newInstance();
} catch (Exception e) {
throw new IllegalStateException(String.format("Fail to instantiate %s", clazz), e);
}
}
}
return ok;
}
public static File newTempDir(String prefix) {
try {
return Files.createTempDirectory(prefix).toFile();
} catch (Exception e) {
throw new IllegalStateException("Fail to create temp dir", e);
}
}
}
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