// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * 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.
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//
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package com.google.protobuf;

import junit.framework.TestCase;

/**
 * Test @{link TextFormatParseLocation}.
 */
public class TextFormatParseLocationTest extends TestCase {

  public void testCreateEmpty() {
    TextFormatParseLocation location = TextFormatParseLocation.create(-1, -1);
    assertEquals(TextFormatParseLocation.EMPTY, location);
  }

  public void testCreate() {
    TextFormatParseLocation location = TextFormatParseLocation.create(2, 1);
    assertEquals(2, location.getLine());
    assertEquals(1, location.getColumn());
  }

  public void testCreateThrowsIllegalArgumentExceptionForInvalidIndex() {
    try {
      TextFormatParseLocation.create(-1, 0);
      fail("Should throw IllegalArgumentException if line is less than 0");
    } catch (IllegalArgumentException unused) {
      // pass
    }
    try {
      TextFormatParseLocation.create(0, -1);
      fail("Should throw, column < 0");
    } catch (IllegalArgumentException unused) {
      // pass
    }
  }

  public void testHashCode() {
    TextFormatParseLocation loc0 = TextFormatParseLocation.create(2, 1);
    TextFormatParseLocation loc1 = TextFormatParseLocation.create(2, 1);

    assertEquals(loc0.hashCode(), loc1.hashCode());
    assertEquals(
        TextFormatParseLocation.EMPTY.hashCode(), TextFormatParseLocation.EMPTY.hashCode());
  }

  public void testEquals() {
    TextFormatParseLocation loc0 = TextFormatParseLocation.create(2, 1);
    TextFormatParseLocation loc1 = TextFormatParseLocation.create(1, 2);
    TextFormatParseLocation loc2 = TextFormatParseLocation.create(2, 2);
    TextFormatParseLocation loc3 = TextFormatParseLocation.create(2, 1);

    assertEquals(loc0, loc3);
    assertNotSame(loc0, loc1);
    assertNotSame(loc0, loc2);
    assertNotSame(loc1, loc2);
  }
}