/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.classic.encoder;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.nio.charset.Charset;
  
  import ch.qos.logback.classic.PatternLayout;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import ch.qos.logback.classic.Level;
  import ch.qos.logback.classic.Logger;
  import ch.qos.logback.classic.LoggerContext;
  import ch.qos.logback.classic.spi.ILoggingEvent;
  import ch.qos.logback.classic.spi.LoggingEvent;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class PatternLayoutEncoderTest {
  
      PatternLayoutEncoder ple = new PatternLayoutEncoder();
      LoggerContext context = new LoggerContext();
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      Logger logger = context.getLogger(PatternLayoutEncoderTest.class);
      Charset utf8Charset = Charset.forName("UTF-8");
  
      @BeforeEach
      public void setUp() {
          ple.setPattern("%m");
          ple.setContext(context);
      }
  
      ILoggingEvent makeLoggingEvent(String message) {
          return new LoggingEvent("", logger, Level.DEBUG, message, null, null);
      }
  
      @Test
      public void smoke() throws IOException {
          init(baos);
          String msg = "hello";
          ILoggingEvent event = makeLoggingEvent(msg);
          byte[] eventBytes = ple.encode(event);
          baos.write(eventBytes);
          ple.footerBytes();
          assertEquals(msg, baos.toString());
      }
  
      void init(ByteArrayOutputStream baos) throws IOException {
          ple.start();
          ((PatternLayout) ple.getLayout()).setOutputPatternAsHeader(false);
          byte[] header = ple.headerBytes();
          baos.write(header);
      }
  
      @Test
      public void charset() throws IOException {
          ple.setCharset(utf8Charset);
          init(baos);
          String msg = "\u03b1";
          ILoggingEvent event = makeLoggingEvent(msg);
          byte[] eventBytes = ple.encode(event);
          baos.write(eventBytes);
          ple.footerBytes();
          assertEquals(msg, new String(baos.toByteArray(), utf8Charset));
      }
  
      @Test
      public void isStarted() throws IOException {
          assertTrue(!ple.isStarted());
          ple.start();
          assertTrue(ple.isStarted());
      }
  }