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DirectoryMatchers.java
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DirectoryMatchers.java
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/*
* Copyright (c) 2022 Eclipse Foundation and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.tests.utils.junit.matcher;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeDiagnosingMatcher;
import java.io.File;
import java.nio.file.NotDirectoryException;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.jupiter.api.Assertions.fail;
public final class DirectoryMatchers {
private DirectoryMatchers() {
throw new AssertionError();
}
public static Matcher<File> hasEntryCount(final long expected) {
return hasEntryCount(equalTo(expected));
}
public static Matcher<File> hasEntryCount(final Matcher<Long> expected) {
return new TypeSafeDiagnosingMatcher<>() {
@Override
public void describeTo(Description description) {
description.appendText("A directory with a number of entries: ").appendDescriptionOf(expected);
}
@Override
protected boolean matchesSafely(File file, Description mismatchDescription) {
String[] entries = file.list();
if (entries != null) {
long entryCount = entries.length;
boolean matches = expected.matches(entryCount);
if (!matches) {
expected.describeMismatch(entryCount, mismatchDescription);
}
return matches;
} else {
return fail(new NotDirectoryException(file.getName()));
}
}
};
}
}