/*
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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
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 */
package org.apache.hc.core5.http2.impl.nio;

import java.nio.ByteBuffer;

import org.apache.hc.core5.http.nio.AsyncServerExchangeHandler;
import org.apache.hc.core5.http.nio.HandlerFactory;
import org.apache.hc.core5.http.protocol.HttpProcessor;
import org.apache.hc.core5.reactor.ProtocolIOSession;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

class TestServerH2PrefaceHandler {

    @Test
    void rejectsInvalidPreface() throws Exception {
        final HttpProcessor httpProcessor = Mockito.mock(HttpProcessor.class);
        @SuppressWarnings("unchecked")
        final HandlerFactory<AsyncServerExchangeHandler> exchangeHandlerFactory =
                (HandlerFactory<AsyncServerExchangeHandler>) Mockito.mock(HandlerFactory.class);
        final ServerH2StreamMultiplexerFactory factory = new ServerH2StreamMultiplexerFactory(
                httpProcessor, exchangeHandlerFactory, null, null, null);

        final ProtocolIOSession ioSession = Mockito.mock(ProtocolIOSession.class);
        final ServerH2PrefaceHandler handler = new ServerH2PrefaceHandler(ioSession, factory, null);

        final byte[] invalid = ServerH2PrefaceHandler.PREFACE.clone();
        invalid[0] = (byte) (invalid[0] + 1);

        try {
            Assertions.assertThrows(ProtocolNegotiationException.class, () ->
                    handler.inputReady(ioSession, ByteBuffer.wrap(invalid)));
        } finally {
            handler.close();
        }
    }

}
