int actual = DoubleMath.fuzzyCompare(a, b, tolerance);
        assertEquals(Integer.signum(expected), Integer.signum(actual));
      }
    }
  }

  public void testFuzzyCompareBadTolerance() {
    for (double tolerance : BAD_TOLERANCE_CANDIDATES) {
      assertThrows(IllegalArgumentException.class, () -> DoubleMath.fuzzyCompare(1, 2, tolerance));
    }
  }