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package org.netbeans.junit;

import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Indicates that this test can fail randomly.
 * <p>When used on a method in a class extending {@link NbTestCase},
 * the implicit suite will exclude this test in case the system property
 * <code>ignore.random.failures</code> is set to <code>true</code>.
 * When used on a class passed to {@link NbTestSuite#NbTestSuite(Class)} or {@link NbTestSuite#addTestSuite(Class)},
 * the suite will be empty if the system property is set;
 * the same if it is used on a class extending {@link NbTestCase}.
 * <p>Test runs which must be reliable should define the system property.
 * (E.g. for NetBeans modules: <code>ant -Dtest-unit-sys-prop.ignore.random.failures=true test</code>)
 * Developers running tests interactively should not.
 * @since 1.51
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.METHOD})
@Inherited
public @interface RandomlyFails {}