/*
 *  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.charset.StandardCharsets;

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

/**
 * Unit tests for Section 6.7 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_6_7 extends Http2TestBase {


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

        sendPing(0, false, "01234567".getBytes(StandardCharsets.ISO_8859_1));

        // Ping ack
        parser.readFrame(true);

        Assert.assertEquals("0-Ping-Ack-[48,49,50,51,52,53,54,55]\n", output.getTrace());
    }


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

        sendPing(0, true, "01234567".getBytes(StandardCharsets.ISO_8859_1));
        sendPing(0, false, "76543210".getBytes(StandardCharsets.ISO_8859_1));

        // Ping ack (only for second ping)
        parser.readFrame(true);

        Assert.assertEquals("0-Ping-Ack-[55,54,53,52,51,50,49,48]\n", output.getTrace());
    }


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

        sendPing(1, false, "76543210".getBytes(StandardCharsets.ISO_8859_1));

        handleGoAwayResponse(1);
    }


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

        sendPing(0, false, "6543210".getBytes(StandardCharsets.ISO_8859_1));

        handleGoAwayResponse(1, Http2Error.FRAME_SIZE_ERROR);
    }
}
