/*
 *  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.
 */
package org.apache.coyote.http2;

import java.nio.ByteBuffer;

import org.junit.Assert;
import org.junit.Test;

/**
 * Unit tests for Section 4.1 of
 * <a href="https://tools.ietf.org/html/rfc7540">RFC 7540</a>.
 * <br>
 * The order of tests in this class is aligned with the order of the
 * requirements in the RFC.
 */
public class TestHttp2Section_4_1 extends Http2TestBase {

    private static final byte[] UNKNOWN_FRAME = new byte[] {
        0x00, 0x00, 0x00, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00 };

    // TODO: Tests for over-sized frames. Better located in tests for section 6?


    @Test
    public void testUnknownFrameType() throws Exception {
        http2Connect();
        os.write(UNKNOWN_FRAME);
        os.flush();
        sendSimpleGetRequest(3);
        readSimpleGetResponse();
        Assert.assertEquals(getSimpleResponseTrace(3), output.getTrace());
    }


    // TODO: Tests for unexpected flags. Better located in tests for section 6?


    @Test
    public void testReservedBitIgnored() throws Exception {
        // HTTP2 upgrade
        http2Connect();

        // Build the simple request
        byte[] frameHeader = new byte[9];
        ByteBuffer headersPayload = ByteBuffer.allocate(128);
        buildSimpleGetRequest(frameHeader, headersPayload, null, 3);

        // Tweak the header to set the reserved bit
        frameHeader[5] = (byte) (frameHeader[5] | 0x80);

        // Process the request
        writeFrame(frameHeader, headersPayload);

        readSimpleGetResponse();
        Assert.assertEquals(getSimpleResponseTrace(3), output.getTrace());
    }
}
