/*
    * 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.compress.harmony.unpack200;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests for org.apache.commons.compress.harmony.unpack200.SegmentConstantPool.
   */
  class SegmentConstantPoolTest {
  
      public class MockSegmentConstantPool extends SegmentConstantPool {
  
          MockSegmentConstantPool() {
              super(new CpBands(new Segment()));
          }
  
          @Override
          public int matchSpecificPoolEntryIndex(final String[] classNameArray, final String desiredClassName, final int desiredIndex) {
              return super.matchSpecificPoolEntryIndex(classNameArray, desiredClassName, desiredIndex);
          }
  
          @Override
          public int matchSpecificPoolEntryIndex(final String[] classNameArray, final String[] methodNameArray, final String desiredClassName,
                  final String desiredMethodRegex, final int desiredIndex) {
              return super.matchSpecificPoolEntryIndex(classNameArray, methodNameArray, desiredClassName, desiredMethodRegex, desiredIndex);
          }
  
          public boolean regexMatchesVisible(final String regexString, final String compareString) {
              return SegmentConstantPool.regexMatches(regexString, compareString);
          }
      }
  
      String[] testClassArray = { "Object", "Object", "java/lang/String", "java/lang/String", "Object", "Other" };
      String[] testMethodArray = { "<init>()", "clone()", "equals()", "<init>", "isNull()", "Other" };
  
      @Test
      void testMatchSpecificPoolEntryIndex_DoubleArray() {
          final MockSegmentConstantPool mockInstance = new MockSegmentConstantPool();
          // Elements should be found at the proper position.
          assertEquals(0, mockInstance.matchSpecificPoolEntryIndex(testClassArray, testMethodArray, "Object", "^<init>.*", 0));
          assertEquals(2, mockInstance.matchSpecificPoolEntryIndex(testClassArray, testMethodArray, "java/lang/String", ".*", 0));
          assertEquals(3, mockInstance.matchSpecificPoolEntryIndex(testClassArray, testMethodArray, "java/lang/String", "^<init>.*", 0));
          assertEquals(5, mockInstance.matchSpecificPoolEntryIndex(testClassArray, testMethodArray, "Other", ".*", 0));
  
          // Elements that don't exist shouldn't be found
          assertEquals(-1, mockInstance.matchSpecificPoolEntryIndex(testClassArray, testMethodArray, "NotThere", "^<init>.*", 0));
  
          // Elements that exist but don't have the requisite number
          // of hits shouldn't be found.
          assertEquals(-1, mockInstance.matchSpecificPoolEntryIndex(testClassArray, testMethodArray, "java/lang/String", "^<init>.*", 1));
      }
  
      @Test
      void testMatchSpecificPoolEntryIndex_SingleArray() {
          final MockSegmentConstantPool mockInstance = new MockSegmentConstantPool();
          // Elements should be found at the proper position.
          assertEquals(0, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "Object", 0));
          assertEquals(1, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "Object", 1));
          assertEquals(2, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "java/lang/String", 0));
          assertEquals(3, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "java/lang/String", 1));
          assertEquals(4, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "Object", 2));
          assertEquals(5, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "Other", 0));
  
          // Elements that don't exist shouldn't be found
          assertEquals(-1, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "NotThere", 0));
  
          // Elements that exist but don't have the requisite number
          // of hits shouldn't be found.
          assertEquals(-1, mockInstance.matchSpecificPoolEntryIndex(testClassArray, "java/lang/String", 2));
      }
  
      @Test
      void testRegexReplacement() {
          final MockSegmentConstantPool mockPool = new MockSegmentConstantPool();
          assertTrue(mockPool.regexMatchesVisible(".*", "anything"));
          assertTrue(mockPool.regexMatchesVisible(".*", ""));
          assertTrue(mockPool.regexMatchesVisible("^<init>.*", "<init>"));
          assertTrue(mockPool.regexMatchesVisible("^<init>.*", "<init>stuff"));
         assertFalse(mockPool.regexMatchesVisible("^<init>.*", "init>stuff"));
         assertFalse(mockPool.regexMatchesVisible("^<init>.*", "<init"));
         assertFalse(mockPool.regexMatchesVisible("^<init>.*", ""));
     }
 }