package org.junit.rules;
import org.junit.Rule;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.Statement;
/**
* A MethodRule is an alteration in how a test method is run and reported.
* Multiple {@link MethodRule}s can be applied to a test method. The
* {@link Statement} that executes the method is passed to each annotated
* {@link Rule} in turn, and each may return a substitute or modified
* {@link Statement}, which is passed to the next {@link Rule}, if any. For
* an example of how this can be useful, see {@link TestWatchman}.
*
* <p>Note that {@link MethodRule} has been replaced by {@link TestRule},
* which has the added benefit of supporting class rules.
*
* @since 4.7
*/
public interface MethodRule {
/**
* Modifies the method-running {@link Statement} to implement an additional
* test-running rule.
*
* @param base The {@link Statement} to be modified
* @param method The method to be run
* @param target The object on which the method will be run.
* @return a new statement, which may be the same as {@code base},
* a wrapper around {@code base}, or a completely new Statement.
*/
Statement apply(Statement base, FrameworkMethod method, Object target);
}