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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
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 *
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import jdk.internal.net.http.qpack.QPackException;
import jdk.internal.net.http.qpack.readers.IntegerReader;
import jdk.internal.net.http.qpack.writers.IntegerWriter;

import java.nio.ByteBuffer;
import java.util.stream.IntStream;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.TestInstance;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;

/*
 * @test
 * @modules java.base/jdk.internal.net.quic
 *          java.net.http/jdk.internal.net.http.http3
 *          java.net.http/jdk.internal.net.http.hpack
 *          java.net.http/jdk.internal.net.http.qpack
 *          java.net.http/jdk.internal.net.http.qpack.readers
 *          java.net.http/jdk.internal.net.http.qpack.writers
 * @run junit/othervm -Djdk.internal.httpclient.qpack.log.level=INFO
 *                     IntegerReaderMaxValuesTest
 */
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
public class IntegerReaderMaxValuesTest {
    public Object[][] nValues() {
        return IntStream.range(1, 8)
                .boxed()
                .map(N -> new Object[]{N})
                .toArray(Object[][]::new);
    }

    @ParameterizedTest
    @MethodSource("nValues")
    public void maxIntegerWriteRead(int N) {
        IntegerWriter writer = new IntegerWriter();
        writer.configure(IntegerReader.QPACK_MAX_INTEGER_VALUE, N, 0);
        ByteBuffer buffer = ByteBuffer.allocate(1024);
        writer.write(buffer);
        IntegerReader reader = new IntegerReader();
        reader.configure(N);
        buffer.flip();
        reader.read(buffer);
        long result = reader.get();
        Assertions.assertEquals(IntegerReader.QPACK_MAX_INTEGER_VALUE, result);
    }

    @ParameterizedTest
    @MethodSource("nValues")
    public void overflowInteger(int N) {
        Assertions.assertThrows(QPackException.class, () -> {
            // Construct buffer with overflowed integer
            ByteBuffer overflowBuffer = ByteBuffer.allocate(11);

            overflowBuffer.put((byte) ((2 << (N - 1)) - 1));
            for (int i = 0; i < 9; i++) {
                overflowBuffer.put((byte) 128);
            }
            overflowBuffer.put((byte) 10);
            overflowBuffer.flip();
            // Read the buffer with IntegerReader
            IntegerReader reader = new IntegerReader();
            reader.configure(N);
            reader.read(overflowBuffer);
        });
    }
}