How to launch FsUnit tests on Linux/Mac

Question

I have installed FsUnit

» nuget install fsunit
Attempting to resolve dependency 'NUnit (≥ 2.6.3)'.
Installing 'NUnit 2.6.3'.
Successfully installed 'NUnit 2.6.3'.
Installing 'FsUnit 1.3.0.1'.
Successfully installed 'FsUnit 1.3.0.1'.

I have created simple unit test:

module Tests

open NUnit.Framework
open FsUnit

[<Test>]
let ``simple test`` () =
  1 |> should equal 1

Here is I am launching my test:

» fsharpc -r NUnit.2.6.3/lib/nunit.framework.dll -r FsUnit.1.3.0.1/Lib/Net40/FsUnit.NUnit.dll 01_binomial_tests.fs
F# Compiler for F# 3.1 (Open Source Edition)
Freely distributed under the Apache 2.0 Open Source License

/Users/demas/development/book_exericses/fsharp_deep_dive/01_binomial_tests.fs(7,1): warning FS0988: Main module of program is empty: nothing will happen when it is run

It was compiled fine but I don't know how to launch the tests without VS

Update

I have tried to use NUnit.Runners:

> nuget install NUnit.Runners
> fsharpc -r NUnit.2.6.3/lib/nunit.framework.dll -r FsUnit.1.3.0.1/Lib/Net40/FsUnit.NUnit.dll --target:library  01_binomial_tests.fs
> mono NUnit.Runners.2.6.4/tools/nunit-console.exe 01_binomial_tests.dll
NUnit-Console version 2.6.4.14350
Copyright (C) 2002-2012 Charlie Poole.
Copyright (C) 2002-2004 James W. Newkirk, Michael C. Two, Alexei A. Vorontsov.
Copyright (C) 2000-2002 Philip Craig.
All Rights Reserved.

Runtime Environment -
   OS Version: Unix 14.4.0.0
  CLR Version: 2.0.50727.1433 ( Mono 3.5 ( 3.10.0 ((detached/92c4884 Thu Nov 13 23:27:38 EST 2014) ) )

ProcessModel: Default    DomainUsage: Single
Execution Runtime: mono-3.5
Could not load file or assembly '01_binomial_tests, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

Answer 1

You have a couple of options:

• Add dependency on NUnit.Runners NuGet package, which comes with a stand-alone runner
• Use Xamarin Studio, which seems to have Unit Tests panel for running tests
• Use FAKE which is a nice F# build tool that can run unit tests

I personally use FAKE because it nicely automates everything. To do that, you need to put something like this in your FAKE build.fsx script:

Target "Test" (fun _ ->
    !! "/tests*.dll |> NUnit (fun p ->
        {p with
           DisableShadowCopy = true;
           OutputFile = testDir + "TestResults.xml" })
)

You'll need dependencies on FAKE and NUnit.Runners and then FAKE should also find the runner automatically (so you do not have to set it explicitly in your build script).