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Java bitstream structure I/O (Test suite)
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/*
 * Copyright © 2019 Mark Raynsford  https://www.io7m.com
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */


package com.io7m.jbssio.tests;

import com.io7m.jbssio.vanilla.internal.BSSRangeHalfOpen;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import java.util.OptionalLong;

public final class BSSRangeHalfOpenTest
{
  @Test
  public void testRangeOK()
  {
    final var r = new BSSRangeHalfOpen(0L, OptionalLong.of(0xffff_ffff_ffff_ffffL));
    Assertions.assertEquals("[0x0, 0xffffffffffffffff)", r.toString());
    Assertions.assertTrue(r.includesValue(0L));
    Assertions.assertTrue(r.includesValue(0xffff_ffff_ffff_fffeL));
    Assertions.assertFalse(r.includesValue(0xffff_ffff_ffff_ffffL));
  }

  @Test
  public void testRangeOKUnbounded()
  {
    final var r = new BSSRangeHalfOpen(0L, OptionalLong.empty());
    Assertions.assertEquals("[0x0, ∞)", r.toString());
    Assertions.assertTrue(r.includesValue(0L));
    Assertions.assertTrue(r.includesValue(0xffff_ffff_ffff_ffffL));
  }

  @Test
  public void testRangeInclusion()
  {
    final var r0 = new BSSRangeHalfOpen(0L, OptionalLong.empty());
    final var r1 = new BSSRangeHalfOpen(0L, OptionalLong.empty());
    final var r2 = new BSSRangeHalfOpen(0L, OptionalLong.of(0xffff_ffff_ffff_ffffL));
    final var r3 = new BSSRangeHalfOpen(0L, OptionalLong.of(0xffff_ffff_ffff_fffeL));

    Assertions.assertTrue(r0.isIncludedIn(r1));
    Assertions.assertTrue(r1.isIncludedIn(r0));
    Assertions.assertTrue(r2.isIncludedIn(r0));
    Assertions.assertFalse(r0.isIncludedIn(r2));
    Assertions.assertFalse(r0.isIncludedIn(r3));
    Assertions.assertTrue(r3.isIncludedIn(r2));
  }

  @Test
  public void testRangeIncludes()
  {
    final var r = new BSSRangeHalfOpen(0L, OptionalLong.of(10L));
    for (var i = 0; i < 10; ++i) {
      Assertions.assertTrue(r.includesValue(i));
    }
    Assertions.assertFalse(r.includesValue(10));
  }

  @Test
  public void testRangeBad0()
  {
    Assertions.assertThrows(IllegalArgumentException.class, () -> {
      new BSSRangeHalfOpen(0xffff_ffff_ffff_ffffL, OptionalLong.of(0L));
    });
  }
}