public void Oee_LoadPrologPattern_WithoutMask()
 {
     var sPattern = new BytePattern_v1
     {
         Bytes = "55 3? ?2",
     };
     var element = new OperatingEnvironmentElement();
     var pattern = element.LoadBytePattern(sPattern);
     Assert.AreEqual(new byte[] { 0x55, 0x30, 0x02 }, pattern.Bytes);
     Assert.AreEqual(new byte[] { 0xFF, 0xF0, 0x0F }, pattern.Mask);
 }