/**
    * 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.sift;
  
  import ch.qos.logback.classic.Level;
  import ch.qos.logback.classic.Logger;
  import ch.qos.logback.classic.LoggerContext;
  import ch.qos.logback.classic.spi.LoggingEvent;
  import ch.qos.logback.classic.util.LogbackMDCAdapter;
  import ch.qos.logback.core.testUtil.RandomUtil;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.slf4j.MDC;
  
  import java.util.HashMap;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  /**
   * @author Ceki Gülcü
   */
  public class MDCBasedDiscriminatorTest {
  
      static String DEFAULT_VAL = "DEFAULT_VAL";
  
      MDCBasedDiscriminator discriminator = new MDCBasedDiscriminator();
      LoggerContext loggerContext = new LoggerContext();
      LogbackMDCAdapter logbackMDCAdapter = new LogbackMDCAdapter();
      Logger logger = loggerContext.getLogger(this.getClass());
  
      int diff = RandomUtil.getPositiveInt();
      String key = "MDCBasedDiscriminatorTest_key" + diff;
      String value = "MDCBasedDiscriminatorTest_val" + diff;
      LoggingEvent event;
  
      @BeforeEach
      public void setUp() {
          loggerContext.setMDCAdapter(logbackMDCAdapter);
          discriminator.setContext(loggerContext);
          discriminator.setKey(key);
          discriminator.setDefaultValue(DEFAULT_VAL);
          discriminator.start();
          assertTrue(discriminator.isStarted());
      }
  
      @AfterEach
      public void teaDown() {
          MDC.clear();
      }
  
      @Test
      public void smoke() {
          logbackMDCAdapter.put(key, value);
          event = new LoggingEvent("a", logger, Level.DEBUG, "", null, null);
  
          String discriminatorValue = discriminator.getDiscriminatingValue(event);
          assertEquals(value, discriminatorValue);
      }
  
      @Test
      public void nullMDC() {
          event = new LoggingEvent("a", logger, Level.DEBUG, "", null, null);
          assertEquals(new HashMap<String, String>(), event.getMDCPropertyMap());
          String discriminatorValue = discriminator.getDiscriminatingValue(event);
          assertEquals(DEFAULT_VAL, discriminatorValue);
      }
  }