public void NonIntegerSubtraction()
{
Assert.AreEqual(-9.8M, decimal.Parse(MathFunctionObj.Subtract("0.1", "9.9")));
Assert.AreEqual(80.46M, decimal.Parse(MathFunctionObj.Subtract("45.23", "-35.23")));
Assert.AreEqual(5.2M, decimal.Parse(MathFunctionObj.Subtract("0", "-5.2")));
Assert.AreEqual(5.2M, decimal.Parse(MathFunctionObj.Subtract(" 0", " -5.2")));
}
public void BadInput()
{
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Subtract("text", "10"));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Subtract("10", "text"));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Subtract("", ""));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Subtract(null, ""));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Subtract("", null));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Subtract(null, null));
}
public void IntegerSubtraction()
{
Assert.AreEqual(0.0M, decimal.Parse(MathFunctionObj.Subtract("5", "5")));
Assert.AreEqual(-8M, decimal.Parse(MathFunctionObj.Subtract("1", "9")));
Assert.AreEqual(-50M, decimal.Parse(MathFunctionObj.Subtract("-20", "30")));
Assert.AreEqual(-10M, decimal.Parse(MathFunctionObj.Subtract("0", "10")));
Assert.AreEqual(10M, decimal.Parse(MathFunctionObj.Subtract("10", "0")));
Assert.AreEqual(10M, decimal.Parse(MathFunctionObj.Subtract("10 ", " 0")));
}