public void SubTest()
{
BasicsOperation bo = new BasicsOperation(); // Arrange
int result = bo.sub(2, 5); // Act
Assert.AreEqual(-3, result);
}
public void AddTest()
{
BasicsOperation bo = new BasicsOperation(); // Arrange
int result = bo.Add(2, 5); // Act
Assert.AreEqual(7, result);
}