/*
    * 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
    *
    *      https://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.commons.lang3.builder;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.concurrent.atomic.AtomicInteger;
  import java.util.concurrent.atomic.AtomicLong;
  
  import org.apache.commons.lang3.AbstractLangTest;
  import org.apache.commons.lang3.mutable.MutableBoolean;
  import org.apache.commons.lang3.mutable.MutableByte;
  import org.apache.commons.lang3.mutable.MutableDouble;
  import org.apache.commons.lang3.mutable.MutableFloat;
  import org.apache.commons.lang3.mutable.MutableInt;
  import org.apache.commons.lang3.mutable.MutableLong;
  import org.apache.commons.lang3.mutable.MutableShort;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link RecursiveToStringStyleTest}.
   */
  class RecursiveToStringStyleTest extends AbstractLangTest {
  
      static class Job {
  
          /**
           * Test String field.
           */
          String title;
      }
  
      static class Person {
  
          /**
           * Test String field.
           */
          String name;
  
          /**
           * Test integer field.
           */
          int age;
  
          /**
           * Test boolean field.
           */
          boolean smoker;
  
          /**
           * Test Object field.
           */
          Job job;
      }
  
      private final Integer base = Integer.valueOf(5);
  
      private final String baseStr = base.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(base));
  
      @BeforeEach
      public void setUp() {
          ToStringBuilder.setDefaultStyle(new RecursiveToStringStyle());
      }
  
      @AfterEach
      public void tearDown() {
          ToStringBuilder.setDefaultStyle(ToStringStyle.DEFAULT_STYLE);
      }
  
      @Test
      void testAppendSuper() {
          assertEquals(baseStr + "[]", new ToStringBuilder(base).appendSuper("Integer@8888[]").toString());
          assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).appendSuper("Integer@8888[<null>]").toString());
  
          assertEquals(baseStr + "[a=hello]", new ToStringBuilder(base).appendSuper("Integer@8888[]").append("a", "hello").toString());
         assertEquals(baseStr + "[<null>,a=hello]", new ToStringBuilder(base).appendSuper("Integer@8888[<null>]").append("a", "hello").toString());
         assertEquals(baseStr + "[a=hello]", new ToStringBuilder(base).appendSuper(null).append("a", "hello").toString());
     }
 
     @Test
     void testAtomicsArray() {
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new AtomicLong[] { new AtomicLong(3), new AtomicLong(6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new AtomicInteger[] { new AtomicInteger(3), new AtomicInteger(6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{true,false}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new AtomicBoolean[] { new AtomicBoolean(true), new AtomicBoolean(false) } }).toString());
     }
 
     @Test
     void testBigDecimal() {
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new BigDecimal[] { BigDecimal.valueOf(3), BigDecimal.valueOf(6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3.0,6.0}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new BigDecimal[] { BigDecimal.valueOf(3.0), BigDecimal.valueOf(6.0) } }).toString());
     }
 
     @Test
     void testBigInteger() {
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new BigInteger[] { BigInteger.valueOf(3), BigInteger.valueOf(6) } }).toString());
     }
 
     @Test
     void testBlank() {
         assertEquals(baseStr + "[]", new ToStringBuilder(base).toString());
     }
 
     @Test
     void testLong() {
         assertEquals(baseStr + "[3]", new ToStringBuilder(base).append(3L).toString());
         assertEquals(baseStr + "[a=3]", new ToStringBuilder(base).append("a", 3L).toString());
         assertEquals(baseStr + "[a=3,b=4]", new ToStringBuilder(base).append("a", 3L).append("b", 4L).toString());
     }
 
     @Test
     void testLongArray() {
         long[] array = {1, 2, -3, 4};
         assertEquals(baseStr + "[{1,2,-3,4}]", new ToStringBuilder(base).append(array).toString());
         assertEquals(baseStr + "[{1,2,-3,4}]", new ToStringBuilder(base).append((Object) array).toString());
         array = null;
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append(array).toString());
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append((Object) array).toString());
     }
 
     @Test
     void testLongArrayArray() {
         long[][] array = {{1, 2}, null, {5}};
         assertEquals(baseStr + "[{{1,2},<null>,{5}}]", new ToStringBuilder(base).append(array).toString());
         assertEquals(baseStr + "[{{1,2},<null>,{5}}]", new ToStringBuilder(base).append((Object) array).toString());
         array = null;
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append(array).toString());
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append((Object) array).toString());
     }
 
     /**
      * With an output-length limit configured, nested objects past the limit are elided with a
      * clear truncation marker.
      */
     @Test
     void testMaxOutputLengthTruncates() {
         final List<Object> list = new ArrayList<>();
         for (int i = 0; i < 100; i++) {
             list.add(new ArrayList<>(Collections.singletonList("item" + i)));
         }
         final String s = new ToStringBuilder(base, RecursiveToStringStyle.builder().setMaxOutputLength(200).get()).append("g", list, true).toString();
         assertTrue(s.contains("...<truncated>"), "Truncation marker expected: " + s);
         assertTrue(s.length() < 10_000, "Output must be throttled, was " + s.length());
     }
 
     @Test
     void testMutableWrapperArray() {
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableLong[] { new MutableLong(3), new MutableLong(6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableInt[] { new MutableInt(3), new MutableInt(6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableShort[] { new MutableShort(3), new MutableShort(6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableByte[] { new MutableByte((byte) 3), new MutableByte((byte) 6) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3.0,6.0}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableFloat[] { new MutableFloat(3f), new MutableFloat(6f) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3.0,6.0}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableDouble[] { new MutableDouble(3d), new MutableDouble(6d) } }).toString());
         assertEquals(baseStr + "[{<null>,5,{true,false}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new MutableBoolean[] { new MutableBoolean(true), new MutableBoolean(false) } }).toString());
     }
 
     @Test
     void testObject() {
         final Integer i3 = Integer.valueOf(3);
         final Integer i4 = Integer.valueOf(4);
         final ArrayList<Object> emptyList = new ArrayList<>();
 
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append((Object) null).toString());
         assertEquals(baseStr + "[3]", new ToStringBuilder(base).append(i3).toString());
         assertEquals(baseStr + "[a=<null>]", new ToStringBuilder(base).append("a", (Object) null).toString());
         assertEquals(baseStr + "[a=3]", new ToStringBuilder(base).append("a", i3).toString());
         assertEquals(baseStr + "[a=3,b=4]", new ToStringBuilder(base).append("a", i3).append("b", i4).toString());
         assertEquals(baseStr + "[a=<Integer>]", new ToStringBuilder(base).append("a", i3, false).toString());
         assertEquals(baseStr + "[a=<size=0>]", new ToStringBuilder(base).append("a", emptyList, false).toString());
         assertEquals(baseStr + "[a=java.util.ArrayList@" + Integer.toHexString(System.identityHashCode(emptyList)) + "{}]",
                 new ToStringBuilder(base).append("a", emptyList, true).toString());
         assertEquals(baseStr + "[a=<size=0>]", new ToStringBuilder(base).append("a", new HashMap<>(), false).toString());
         assertEquals(baseStr + "[a={}]", new ToStringBuilder(base).append("a", new HashMap<>(), true).toString());
         assertEquals(baseStr + "[a=<size=0>]", new ToStringBuilder(base).append("a", (Object) new String[0], false).toString());
         assertEquals(baseStr + "[a={}]", new ToStringBuilder(base).append("a", (Object) new String[0], true).toString());
     }
 
     @Test
     void testObjectArray() {
         Object[] array = {null, base, new int[] {3, 6}};
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append(array).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append((Object) array).toString());
         array = null;
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append(array).toString());
         assertEquals(baseStr + "[<null>]", new ToStringBuilder(base).append((Object) array).toString());
     }
 
     @Test
     void testPerson() {
         final Person p = new Person();
         p.name = "John Doe";
         p.age = 33;
         p.smoker = false;
         p.job = new Job();
         p.job.title = "Manager";
         final String baseStr = p.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(p));
         final String jobStr = p.job.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(p.job));
         final ReflectionToStringBuilder builder = new ReflectionToStringBuilder(p, new RecursiveToStringStyle());
         final String expected = baseStr + (builder.isForceAccessible() ? "[age=33,job=" + jobStr + "[title=Manager],name=John Doe,smoker=false]"
                 : "[age=<null>,job=<null>,name=<null>,smoker=<null>]");
         assertEquals(expected, builder.toString());
     }
 
     @Test
     void testPrimitiveWrapperArray() {
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Character[] { '3', '6' } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Long[] { 3L, 6L } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Integer[] { 3, 6 } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Short[] { 3, 6 } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3,6}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Byte[] { 3, 6 } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3.0,6.0}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Float[] { 3f, 6f } }).toString());
         assertEquals(baseStr + "[{<null>,5,{3.0,6.0}}]", new ToStringBuilder(base).append(new Object[] { null, base, new Double[] { 3d, 6d } }).toString());
         assertEquals(baseStr + "[{<null>,5,{true,false}}]",
                 new ToStringBuilder(base).append(new Object[] { null, base, new Boolean[] { true, false } }).toString());
     }
 
     /**
      * A shared (acyclic) reference is detailed once per top-level call; the second occurrence
      * is rendered in the abbreviated {@code Object.toString()} format instead of re-traversed.
      */
     @Test
     void testSharedReferenceDetailedOnce() {
         final ArrayList<Object> shared = new ArrayList<>(Collections.singletonList("x"));
         final String sharedStr = "java.util.ArrayList@" + Integer.toHexString(System.identityHashCode(shared));
         assertEquals(baseStr + "[a=" + sharedStr + "{x},b=" + sharedStr + "]",
                 new ToStringBuilder(base).append("a", shared, true).append("b", shared, true).toString());
     }
 
     /**
      * A deep reference diamond (each level holding two references to the same child) must be
      * traversed in linear time and produce linear output. Without the per-call visited set,
      * this 40-level diamond would require ~2^40 traversals.
      */
     @Test
     void testSharedReferenceDiamondIsLinear() {
         List<Object> child = new ArrayList<>(Collections.singletonList("leaf"));
         for (int i = 0; i < 40; i++) {
             final List<Object> parent = new ArrayList<>();
             parent.add(child);
             parent.add(child);
             child = parent;
         }
         final String s = new ToStringBuilder(base).append("g", child, true).toString();
         assertTrue(s.contains("leaf"), "The graph content must still be rendered");
         assertTrue(s.length() < 100_000, "Output must be linear in graph size, was " + s.length());
     }
 }