ReadBufferTest.java

package io.termd.core.tty;

import io.termd.core.TestBase;
import org.junit.Before;
import org.junit.Test;

import java.util.ArrayList;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Executor;

/**
 * @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
 */
public class ReadBufferTest extends TestBase {

  private ArrayBlockingQueue<Runnable> commands;
  private ReadBuffer buf;
  private ArrayList<int[]> reads;

  @Before
  public void setUp() {
    commands = new ArrayBlockingQueue<>(1);
    buf = new ReadBuffer(new Executor() {
      @Override
      public void execute(Runnable command) {
        commands.add(command);
      }
    });
    reads = new ArrayList<>();
  }

  @Test
  public void testFoo() {
    final ArrayList<int[]> reads = new ArrayList<>();
    buf.setReadHandler(event -> reads.add(event));
    buf.accept(new int[]{'f', 'o', 'o'});
    assertEquals(0, commands.size());
    assertEquals(1, reads.size());
    assertEquals(reads.get(0), new int[]{'f','o','o'});
  }

  @Test
  public void testBar() throws Exception {
    buf.accept(new int[]{'f', 'o', 'o'});
    assertEquals(0, reads.size());
    assertEquals(0, commands.size());
    buf.setReadHandler(event -> reads.add(event));
    assertEquals(0, reads.size());
    assertEquals(1, commands.size());
    commands.poll().run();
    assertEquals(1, reads.size());
    assertEquals(0, commands.size());
    assertEquals(reads.get(0), new int[]{'f','o','o'});
  }

  @Test
  public void testJuu() throws Exception {
    buf.accept(new int[]{'f', 'o', 'o'});
    buf.accept(new int[]{'b', 'a', 'r'});
    assertEquals(0, reads.size());
    assertEquals(0, commands.size());
    buf.setReadHandler(event -> {
      reads.add(event);
      buf.setReadHandler(null);
    });
    assertEquals(0, reads.size());
    assertEquals(1, commands.size());
    commands.poll().run();
    assertEquals(1, reads.size());
    assertEquals(0, commands.size());
    assertEquals(reads.get(0), new int[]{'f', 'o', 'o'});
    assertEquals(null, buf.getReadHandler());
  }

  @Test
  public void testBilto() throws Exception {
    buf.accept(new int[]{'f', 'o', 'o'});
    buf.accept(new int[]{'b', 'a', 'r'});
    assertEquals(0, reads.size());
    assertEquals(0, commands.size());
    buf.setReadHandler(event -> reads.add(event));
    assertEquals(0, reads.size());
    assertEquals(1, commands.size());
    commands.poll().run();
    assertEquals(1, reads.size());
    assertEquals(1, commands.size());
    assertEquals(reads.get(0), new int[]{'f', 'o', 'o'});
    buf.accept(new int[]{'j', 'u', 'u'});
    assertEquals(3, reads.size());
    assertEquals(1, commands.size());
    assertEquals(reads.get(1), new int[]{'b', 'a', 'r'});
    assertEquals(reads.get(2), new int[]{'j', 'u', 'u'});
    commands.poll().run();
    assertEquals(3, reads.size());
    assertEquals(0, commands.size());
  }

}