FlushConsolidationHandlerTest.java — netty Source File

Source Code

/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.flush;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelOutboundHandlerAdapter;
import io.netty.channel.embedded.EmbeddedChannel;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;

import java.util.concurrent.atomic.AtomicInteger;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;

public class FlushConsolidationHandlerTest {

    private static final int EXPLICIT_FLUSH_AFTER_FLUSHES = 3;

    @Test
    public void testFlushViaScheduledTask() {
        final AtomicInteger flushCount = new AtomicInteger();
        EmbeddedChannel channel = newChannel(flushCount,  true);
        // Flushes should not go through immediately, as they're scheduled as an async task
        // To ensure we not run the async task directly we will call trigger the flush() via the pipeline.
        channel.pipeline().flush();
        assertEquals(0, flushCount.get());
        channel.pipeline().flush();
        assertEquals(0, flushCount.get());
        // Trigger the execution of the async task
        channel.runPendingTasks();
        assertEquals(1, flushCount.get());
        assertFalse(channel.finish());
    }

    @Test
    public void testFlushViaThresholdOutsideOfReadLoop() {
        final AtomicInteger flushCount = new AtomicInteger();
        EmbeddedChannel channel = newChannel(flushCount, true);
        // After a given threshold, the async task should be bypassed and a flush should be triggered immediately
        for (int i = 0; i < EXPLICIT_FLUSH_AFTER_FLUSHES; i++) {
            // To ensure we not run the async task directly we will call trigger the flush() via the pipeline.
            channel.pipeline().flush();
        }
// ... (139 more lines)