}
    }

    /**
     * Test that try-with-resources handles null InputStream correctly.
     * Verifies that null InputStream doesn't cause NullPointerException during close.
     */
    @Test
    public void testTryWithResources_nullInputStreamSafety() {
        // This test demonstrates that try-with-resources handles null safely
        try (InputStream is = null) {
            if (is == null) {

        merger.merge(pt, null, null);
        merger.merge(null, pt, null);
    }

    @Test
    void testMergeJdk() throws Exception {
        try (InputStream isDominant = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml");
                InputStream isRecessive = MavenToolchainMergerTest.class.getResourceAsStream("toolchains-jdks.xml")) {
            PersistedToolchains dominant = read(isDominant);

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.helper;

import java.io.InputStream;

import org.codelibs.core.io.CloseableUtil;
import org.codelibs.fess.crawler.container.StandardCrawlerContainer;
import org.codelibs.fess.crawler.entity.RobotsTxt;
import org.dbflute.utflute.core.PlainTestCase;

        }
    }

    /**
     * Helper method to create a trackable input stream that records when it's closed.
     */
    private InputStream createTrackableInputStream(final InputStream originalStream, final AtomicBoolean closedFlag) {
        return new InputStream() {
            @Override
            public int read() throws IOException {
                return originalStream.read();
            }

package org.codelibs.fess.crawler.processor.impl;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.when;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.fess.crawler.container.CrawlerContainer;

 */

package com.google.common.io;

import static com.google.common.truth.Truth.assertThat;

import java.io.ByteArrayInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jspecify.annotations.NullUnmarked;

/**
 * Test class for {@link MultiInputStream}.
 *
 * @author Chris Nokleberg

  }

  /**
   * Wraps a {@link InputStream}, limiting the number of bytes which can be read.
   *
   * @param in the input stream to be wrapped
   * @param limit the maximum number of bytes to be read
   * @return a length-limited {@link InputStream}
   * @since 14.0 (since 1.0 as com.google.common.io.LimitInputStream)
   */
  @J2ktIncompatible
  public static InputStream limit(InputStream in, long limit) {

import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.jspecify.annotations.Nullable;

/**
 * An {@link InputStream} that concatenates multiple substreams. At most one stream will be open at
 * a time.
 *
 * @author Chris Nokleberg
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
final class MultiInputStream extends InputStream {

    }

    static int readn(final InputStream in, final byte[] b, final int off, final int len) throws IOException {
        int i = 0, n;

        while (i < len) {
            n = in.read(b, off + i, len - i);
            if (n <= 0) {
                break;
            }
            i += n;
        }

        return i;
    }

            throw new IORuntimeException(e);
        }
    }

    /**
     * Resets the {@link InputStream}.
     *
     * @param is the input stream (must not be {@literal null})
     * @see InputStream#reset()
     */
    public static void reset(final InputStream is) {
        assertArgumentNotNull("is", is);

        try {
            is.reset();
        } catch (final IOException e) {