Scala Programming Projects

Writing a unit test for the accumulation phase

We want a function that behaves similarly to the FV function in Excel: it calculates the future value of an investment based on a constant interest rate. As we follow a TDD approach, the first thing to do is create a failing test:

1. Create a new Scala project called retirement_calculator. Follow the same instructions as in Chapter 1, Writing Your First Program.

2. Right-click on the directory src/main/scala and select New | Package. Name it retcalc.
3. Right-click on the new package and select New | Scala class. Name it RetCalcSpec.
4. Enter the following code:

package retcalcimport org.scalactic.{Equality, TolerantNumerics, TypeCheckedTripleEquals}import org.scalatest.{Matchers, WordSpec}class RetCalcSpec ...