/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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
 *
 *      http://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 org.apache.logging.log4j.core.pattern;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.ThreadContext;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.impl.Log4jLogEvent;
import org.apache.logging.log4j.message.Message;
import org.apache.logging.log4j.message.SimpleMessage;
import org.junit.Test;

import static org.junit.Assert.*;

/**
 *
 */
public class MdcPatternConverterTest {

    @Test
    public void testConverter() {

        final Message msg = new SimpleMessage("Hello");
        ThreadContext.put("subject", "I");
        ThreadContext.put("verb", "love");
        ThreadContext.put("object", "Log4j");
        final MdcPatternConverter converter = MdcPatternConverter.newInstance(null);
        final LogEvent event = Log4jLogEvent.newBuilder() //
                .setLoggerName("MyLogger") //
                .setLevel(Level.DEBUG) //
                .setMessage(msg) //
                .build();
        final StringBuilder sb = new StringBuilder();
        converter.format(event, sb);
        final String str = sb.toString();
        final String expected = "{object=Log4j, subject=I, verb=love}";
        assertTrue("Incorrect result. Expected " + expected + ", actual " + str, str.equals(expected));
    }

    @Test
    public void testConverterWithKey() {

        final Message msg = new SimpleMessage("Hello");
        final String [] options = new String[] {"object"};
        ThreadContext.put("subject", "I");
        ThreadContext.put("verb", "love");
        ThreadContext.put("object", "Log4j");
        final MdcPatternConverter converter = MdcPatternConverter.newInstance(options);
        final LogEvent event = Log4jLogEvent.newBuilder() //
                .setLoggerName("MyLogger") //
                .setLevel(Level.DEBUG) //
                .setMessage(msg) //
                .build();
        final StringBuilder sb = new StringBuilder();
        converter.format(event, sb);
        final String str = sb.toString();
        final String expected = "Log4j";
        assertEquals(expected, str);
    }

    @Test
    public void testConverterWithKeys() {

        final Message msg = new SimpleMessage("Hello");
        final String [] options = new String[] {"object, subject"};
        ThreadContext.put("subject", "I");
        ThreadContext.put("verb", "love");
        ThreadContext.put("object", "Log4j");
        final MdcPatternConverter converter = MdcPatternConverter.newInstance(options);
        final LogEvent event = Log4jLogEvent.newBuilder() //
                .setLoggerName("MyLogger") //
                .setLevel(Level.DEBUG) //
                .setMessage(msg) //
                .build();
        final StringBuilder sb = new StringBuilder();
        converter.format(event, sb);
        final String str = sb.toString();
        final String expected = "{object=Log4j, subject=I}";
        assertEquals(expected, str);
    }
}


@@ -1128,32 +1128,81 @@
 .SimpleMessage;%0A
+import org.junit.After;%0Aimport org.junit.Before;%0A
 import org.junit
@@ -1208,16 +1208,16 @@
 t.Test;%0A
-
 %0Aimport 
@@ -1291,24 +1291,201 @@
 rterTest %7B%0A%0A
+    @Before%0A    public void setup() %7B%0A        ThreadContext.put(%22subject%22, %22I%22);%0A        ThreadContext.put(%22verb%22, %22love%22);%0A        ThreadContext.put(%22object%22, %22Log4j%22);%0A    %7D%0A%0A
     @Test%0A  
@@ -1512,25 +1512,24 @@
 nverter() %7B%0A
-%0A
         fina
@@ -1576,140 +1576,8 @@
 %22);%0A
-        ThreadContext.put(%22subject%22, %22I%22);%0A        ThreadContext.put(%22verb%22, %22love%22);%0A        ThreadContext.put(%22object%22, %22Log4j%22);%0A
     
@@ -2231,25 +2231,24 @@
 WithKey() %7B%0A
-%0A
         fina
@@ -2354,140 +2354,8 @@
 %22%7D;%0A
-        ThreadContext.put(%22subject%22, %22I%22);%0A        ThreadContext.put(%22verb%22, %22love%22);%0A        ThreadContext.put(%22object%22, %22Log4j%22);%0A
     
@@ -2919,17 +2919,16 @@
 eys() %7B%0A
-%0A
         
@@ -3047,140 +3047,8 @@
 %22%7D;%0A
-        ThreadContext.put(%22subject%22, %22I%22);%0A        ThreadContext.put(%22verb%22, %22love%22);%0A        ThreadContext.put(%22object%22, %22Log4j%22);%0A
     
@@ -3532,24 +3532,24 @@
 ubject=I%7D%22;%0A
-
         asse
@@ -3578,12 +3578,95 @@
 );%0A    %7D
+%0A%0A    @After%0A    public void tearDown() %7B%0A        ThreadContext.clearStack();%0A    %7D
 %0A%7D%0A%0A

Clear ThreadContext after test