public void OJ065_ValidNumberTest2()
 {
     bool result = new OJ065_ValidNumber().IsNumber("-3.4.5");
     Assert.AreEqual(false, result);
 }
 public void OJ065_ValidNumberTest1()
 {
     bool result = new OJ065_ValidNumber().IsNumber("-3.45");
     Assert.AreEqual(true, result);
 }