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Spock is a testing and specification framework for Java and Groovy applications. What makes it stand out from the crowd is its beautiful and highly expressive specification language. Thanks to its JUnit runner, Spock is compatible with most IDEs, build tools, and continuous integration servers. Spock is inspired from JUnit, jMock, RSpec, Groovy, Scala, Vulcans, and other fascinating life forms.

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/*
 * Copyright 2009 the original author or authors.
 *
 * Licensed 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 spock.lang;

import java.lang.annotation.*;
import java.util.concurrent.TimeUnit;

import org.spockframework.runtime.extension.ExtensionAnnotation;
import org.spockframework.runtime.extension.builtin.TimeoutExtension;

/**
 * Indicates that the execution of a method should time out
 * after the given duration has elapsed. The default time unit is seconds.
 *
 * Timeouts can be applied to feature methods, fixture methods, and spec classes.
 * When applied to a feature method, the timeout is per execution of one iteration,
 * and does not include time spent in fixture methods. When applied to a fixture
 * method, the timeout is per execution of the fixture method. Applying the timeout
 * to a spec class has the same effect as applying it to each feature (but not fixture)
 * method that isn't already annotated with {@code Timeout}.
 *
 * 
Timed methods are invoked on the regular test framework thread. This can be
 * important for integration tests that hold thread-local state. When a method
 * times out, it will be interrupted repeatedly until it (hopefully) returns.
 * Methods that continue to ignore interruption may run forever.
 *
 * When a timeout is reported to the user, the stack trace shown reflects the
 * execution stack of the test framework thread when the timeout was reached.
 *
 * @author Peter Niederwieser
 */

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.METHOD})
@ExtensionAnnotation(TimeoutExtension.class)
public @interface Timeout {
  /**
   * Returns the duration after which the execution of the annotated feature or fixture
   * method times out.
   *
   * @return the duration after which the execution of the annotated feature or
   * fixture method times out
   */
  int value();

  /**
   * Returns the duration's time unit.
   *
   * @return the duration's time unit
   */
  TimeUnit unit() default TimeUnit.SECONDS;
}