// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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package org.objectweb.asm.tree.analysis;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;
import org.objectweb.asm.Type;

/**
 * Unit tests for {@link BasicValue}.
 *
 * @author Eric Bruneton
 */
class BasicValueTest {

  @Test
  void testIsReference() {
    assertTrue(BasicValue.REFERENCE_VALUE.isReference());
    assertTrue(new BasicValue(Type.getObjectType("[I")).isReference());
    assertFalse(BasicValue.UNINITIALIZED_VALUE.isReference());
    assertFalse(BasicValue.INT_VALUE.isReference());
  }

  @Test
  void testEquals() {
    boolean equalsSameUninitializedValue =
        new BasicValue(null).equals(BasicValue.UNINITIALIZED_VALUE);
    boolean equalsSameValue = new BasicValue(Type.INT_TYPE).equals(BasicValue.INT_VALUE);
    boolean equalsThis = BasicValue.INT_VALUE.equals(BasicValue.INT_VALUE);
    boolean equalsDifferentClass = BasicValue.INT_VALUE.equals(new Object());

    assertTrue(equalsSameUninitializedValue);
    assertTrue(equalsSameValue);
    assertTrue(equalsThis);
    assertFalse(equalsDifferentClass);
  }

  @Test
  void testHashCode() {
    assertEquals(0, BasicValue.UNINITIALIZED_VALUE.hashCode());
    assertNotEquals(0, BasicValue.INT_VALUE.hashCode());
  }

  @Test
  void testToString() {
    assertEquals(".", BasicValue.UNINITIALIZED_VALUE.toString());
    assertEquals("A", BasicValue.RETURNADDRESS_VALUE.toString());
    assertEquals("R", BasicValue.REFERENCE_VALUE.toString());
    assertEquals("LI;", new BasicValue(Type.getObjectType("I")).toString());
  }
}
