assertEquals(Range.atLeast(Integer.MIN_VALUE), Range.<Integer>all().canonical(integers()));
  }

  public void testCanonical_unboundedDomain() {
    assertEquals(Range.lessThan(0), Range.lessThan(0).canonical(UNBOUNDED_DOMAIN));
    assertEquals(Range.lessThan(1), Range.atMost(0).canonical(UNBOUNDED_DOMAIN));
    assertEquals(Range.atLeast(0), Range.atLeast(0).canonical(UNBOUNDED_DOMAIN));

    assertEquals(empty, Sets.subSet(set, Range.lessThan(0)));
    assertEquals(ImmutableSortedSet.of(2), Sets.subSet(set, Range.lessThan(4)));
    assertEquals(ImmutableSortedSet.of(2, 4, 6), Sets.subSet(set, Range.lessThan(7)));
    assertEquals(set, Sets.subSet(set, Range.lessThan(20)));

    assertEquals(empty, Sets.subSet(set, Range.atMost(0)));