All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.junit.rules.ExternalResource Maven / Gradle / Ivy

There is a newer version: 2.12.15
Show newest version
package org.junit.rules;

import org.junit.runner.Description;
import org.junit.runners.model.Statement;

/**
 * A base class for Rules (like TemporaryFolder) that set up an external
 * resource before a test (a file, socket, server, database connection, etc.),
 * and guarantee to tear it down afterward:
 *
 * 
 * public static class UsesExternalResource {
 *  Server myServer= new Server();
 *
 *  @Rule
 *  public ExternalResource resource= new ExternalResource() {
 *      @Override
 *      protected void before() throws Throwable {
 *          myServer.connect();
 *         };
 *
 *      @Override
 *      protected void after() {
 *          myServer.disconnect();
 *         };
 *     };
 *
 *  @Test
 *  public void testFoo() {
 *      new Client().run(myServer);
 *     }
 * }
 * 
* * @since 4.7 */ public abstract class ExternalResource implements TestRule { public Statement apply(Statement base, Description description) { return statement(base); } private Statement statement(final Statement base) { return new Statement() { @Override public void evaluate() throws Throwable { before(); try { base.evaluate(); } finally { after(); } } }; } /** * Override to set up your specific external resource. * * @throws Throwable if setup fails (which will disable {@code after} */ protected void before() throws Throwable { // do nothing } /** * Override to tear down your specific external resource. */ protected void after() { // do nothing } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy