public void IntegerUtils_Abs1Test() { int?int1 = new int?(1); int?result = (int?)IntegerUtils.Abs(int1); Assert.IsNotNull(result); Assert.AreEqual((byte)1, (byte)result); Assert.AreEqual((short)1, (short)result); Assert.AreEqual(1, result); Assert.AreEqual(1L, (long)result); Assert.AreEqual(1.0f, (float)result, 1.0f); Assert.AreEqual(1.0, (double)result, 1.0); Assert.AreEqual("1", result.ToString()); }