public void BadInput()
{
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Multiply("text", "10"));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Multiply("10", "text"));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Multiply("", ""));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Multiply(null, ""));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Multiply("", null));
Assert.AreEqual(Project1.Functions.MathFunctions.ErrorMessage, MathFunctionObj.Multiply(null, null));
}
public void IntegerMultiplication()
{
for (int i = 0; i <= 10; i++)
{
for (int j = 0; j <= 10; j++)
{
var result = System.Convert.ToDecimal(i * j);
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(i.ToString(), j.ToString())));
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(j.ToString(), i.ToString())));
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(" " + i.ToString(), j.ToString())));
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(" " + i.ToString(), " " + j.ToString())));
}
}
}
public void NonIntegerMultiplication()
{
foreach (double d1 in new[] { 3.5, 2.5, 7.12, 123.9 })
{
foreach (double d2 in new[] { 1.2, 10.23, -23.1, 0.223, 0, 10.1 })
{
var result = System.Convert.ToDecimal(d1 * d2);
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(d1.ToString(), d2.ToString())));
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(d2.ToString(), d1.ToString())));
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(d2.ToString() + " ", d1.ToString())));
Assert.AreEqual(result, decimal.Parse(MathFunctionObj.Multiply(d2.ToString(), " " + d1.ToString())));
}
}
}