/**
    * Copyright (c) 2004-2022 QOS.ch Sarl (Switzerland)
    * All rights reserved.
    *
    * Permission is hereby granted, free  of charge, to any person obtaining
    * a  copy  of this  software  and  associated  documentation files  (the
    * "Software"), to  deal in  the Software without  restriction, including
    * without limitation  the rights to  use, copy, modify,  merge, publish,
    * distribute,  sublicense, and/or sell  copies of  the Software,  and to
   * permit persons to whom the Software  is furnished to do so, subject to
   * the following conditions:
   *
   * The  above  copyright  notice  and  this permission  notice  shall  be
   * included in all copies or substantial portions of the Software.
   *
   * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
   * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
   * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   */
  package org.slf4j.simple;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.util.regex.Pattern;
  
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  
  public class SimpleLoggerTest {
  
      String A_KEY = SimpleLogger.LOG_KEY_PREFIX + "a";
      PrintStream original = System.out;
      ByteArrayOutputStream bout = new ByteArrayOutputStream();
      PrintStream replacement = new PrintStream(bout);
  
      @Before
      public void before() {
          System.setProperty(A_KEY, "info");
      }
  
      @After
      public void after() {
          System.clearProperty(A_KEY);
          System.clearProperty(SimpleLogger.CACHE_OUTPUT_STREAM_STRING_KEY);
          System.clearProperty(SimpleLogger.SHOW_THREAD_ID_KEY);
          System.clearProperty(SimpleLogger.SHOW_THREAD_NAME_KEY);
          System.setErr(original);
      }
  
      @Test
      public void emptyLoggerName() {
          SimpleLogger simpleLogger = new SimpleLogger("a");
          assertEquals("info", simpleLogger.recursivelyComputeLevelString());
      }
  
      @Test
      public void offLevel() {
          System.setProperty(A_KEY, "off");
          SimpleLogger.init();
          SimpleLogger simpleLogger = new SimpleLogger("a");
          assertEquals("off", simpleLogger.recursivelyComputeLevelString());
          assertFalse(simpleLogger.isErrorEnabled());
      }
  
      @Test
      public void loggerNameWithNoDots_WithLevel() {
          SimpleLogger.init();
          SimpleLogger simpleLogger = new SimpleLogger("a");
  
          assertEquals("info", simpleLogger.recursivelyComputeLevelString());
      }
  
      @Test
      public void loggerNameWithOneDotShouldInheritFromParent() {
          SimpleLogger simpleLogger = new SimpleLogger("a.b");
          assertEquals("info", simpleLogger.recursivelyComputeLevelString());
      }
  
      @Test
      public void loggerNameWithNoDots_WithNoSetLevel() {
          SimpleLogger simpleLogger = new SimpleLogger("x");
          assertNull(simpleLogger.recursivelyComputeLevelString());
      }
  
      @Test
      public void loggerNameWithOneDot_NoSetLevel() {
          SimpleLogger simpleLogger = new SimpleLogger("x.y");
          assertNull(simpleLogger.recursivelyComputeLevelString());
     }
 
     @Test
     public void checkUseOfLastSystemStreamReference() {
         SimpleLogger.init();
         SimpleLogger simpleLogger = new SimpleLogger(this.getClass().getName());
 
         System.setErr(replacement);
         simpleLogger.info("hello");
         replacement.flush();
         assertTrue(bout.toString().contains("INFO " + this.getClass().getName() + " - hello"));
     }
 
     @Test
     public void checkUseOfCachedOutputStream() {
         System.setErr(replacement);
         System.setProperty(SimpleLogger.CACHE_OUTPUT_STREAM_STRING_KEY, "true");
         SimpleLogger.init();
         SimpleLogger simpleLogger = new SimpleLogger(this.getClass().getName());
         // change reference to original before logging
         System.setErr(original);
 
         simpleLogger.info("hello");
         replacement.flush();
         assertTrue(bout.toString().contains("INFO " + this.getClass().getName() + " - hello"));
     }
 
     @Test
     public void testTheadIdWithoutThreadName() {
         System.setProperty(SimpleLogger.SHOW_THREAD_NAME_KEY, Boolean.FALSE.toString());
         String patternStr = "^tid=\\d{1,12} INFO org.slf4j.simple.SimpleLoggerTest - hello";
         commonTestThreadId(patternStr);
     }
 
     @Test
     public void testThreadId() {
         String patternStr = "^\\[.*\\] tid=\\d{1,12} INFO org.slf4j.simple.SimpleLoggerTest - hello";
         commonTestThreadId(patternStr);
     }
 
     private void commonTestThreadId(String patternStr) {
         System.setErr(replacement);
         System.setProperty(SimpleLogger.SHOW_THREAD_ID_KEY, Boolean.TRUE.toString());
         SimpleLogger.init();
         SimpleLogger simpleLogger = new SimpleLogger(this.getClass().getName());
         simpleLogger.info("hello");
         replacement.flush();
         String output = bout.toString();
         System.out.println(patternStr);
         System.out.println(output);
         assertTrue(Pattern.compile(patternStr).matcher(output).lookingAt());
     }
 }