JUnit 4.13.2 Source Code Files

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:

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package org.junit.internal.matchers;

import org.hamcrest.Description;
import org.hamcrest.Factory;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeMatcher;

 * A matcher that applies a delegate matcher to the cause of the current Throwable, returning the result of that
 * match.
 * @param <T> the type of the throwable being matched
public class ThrowableCauseMatcher<T extends Throwable> extends
        TypeSafeMatcher<T> {

    private final Matcher<?> causeMatcher;

    public ThrowableCauseMatcher(Matcher<?> causeMatcher) {
        this.causeMatcher = causeMatcher;

    public void describeTo(Description description) {
        description.appendText("exception with cause ");

    protected boolean matchesSafely(T item) {
        return causeMatcher.matches(item.getCause());

    protected void describeMismatchSafely(T item, Description description) {
        description.appendText("cause ");
        causeMatcher.describeMismatch(item.getCause(), description);

     * Returns a matcher that verifies that the outer exception has a cause for which the supplied matcher
     * evaluates to true.
     * @param matcher to apply to the cause of the outer exception
     * @param <T> type of the outer exception
    public static <T extends Throwable> Matcher<T> hasCause(final Matcher<?> matcher) {
        return new ThrowableCauseMatcher<T>(matcher);



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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