JUnit Source Code Files are provided in the source package file, junit-4.13.2-sources.jar.

You can browse JUnit Source Code files below:

⏎ org/junit/FixMethodOrder.java

package org.junit;

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

import org.junit.runners.MethodSorters;

/**
 * This class allows the user to choose the order of execution of the methods within a test class.
 *
 * <p>The default order of execution of JUnit tests within a class is deterministic but not predictable.
 * The order of execution is not guaranteed for Java 7 (and some previous versions), and can even change
 * from run to run, so the order of execution was changed to be deterministic (in JUnit 4.11)
 *
 * <p>It is recommended that test methods be written so that they are independent of the order that they are executed.
 * However, there may be a number of dependent tests either through error or by design.
 * This class allows the user to specify the order of execution of test methods.
 *
 * <p>For possibilities, see {@link MethodSorters}
 *
 * Here is an example:
 *
 * <pre>
 * &#064;FixMethodOrder(MethodSorters.NAME_ASCENDING)
 * public class MyTest {
 * }
 * </pre>
 *
 * @see org.junit.runners.MethodSorters
 * @since 4.11
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
public @interface FixMethodOrder {
    /**
     * Optionally specify <code>value</code> to have the methods executed in a particular order
     */
    MethodSorters value() default MethodSorters.DEFAULT;
}

⏎ org/junit/FixMethodOrder.java

Or download all of them as a single archive file:

File name: junit-4.13.2-sources.jar
File size: 234540 bytes
Release date: 2021-02-13
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