Synopsis

F# has long been on the list of programming languages I wanted to try, and now I've finally gotten around to do it.

Installation

Using Docker

docker pull fsharp/fsharp See https://hub.docker.com/r/fsharp/fsharp/ for additional information.

Using Home

brew brew install mono

Setting up a simple project

We're using Visual Studio Code here and use http://www.davesquared.net/2013/03/hello-world-testing-in-fsharp.html as a starting point.

Create the SUT assembly

Contrary to best (TDD) practices, we're going to create the "production" code first (for now).

• create a new F# project (type: library, name: HelloWorld2, dir: HelloWorld2)
• replace HelloWorld2.fs with this: namespace HelloWorld2 module Math = let add x y = x + y
• compile it using fsharpc -a -o bin/Debug/HelloWorld2.dll HelloWorld2.fs

Create the test assembly

• create a new F# project (type: F# test, name: HelloWorld2_test, dir: HelloWorld2_test
• replace HelloWorld2_test.fs with this: module HelloWorld2_Test open NUnit.Framework open FsUnit open HelloWorld2 [] let exampleTest () = Assert.AreEqual(2, MyMath.add(1,1))
• compile it using fsharpc -a -o bin/Debug/HelloWorld2_Test.dll -r ../../packages/NUnit/lib/net45/nunit.framework.dll -r ../../packages/FsUnit/lib/net45/FsUnit.NUnit.dll -r ../../HelloWorld2/HelloWorld2/bin/Debug/HelloWorld2.dll HelloWorld2_Test.fs - run it using (DOES NOT WORK) nunit-console bin/Debug/HelloWorld2_Test.dll ../../packages/NUnit/lib/net45/nunit.framework.dll ../../packages/FsUnit/lib/net45/FsUnit.NUnit.dll ../../HelloWorld2/HelloWorld2/bin/Debug/HelloWorld2.dll