Re: [sbt] running a task only if running test command

[Mark Harrah]

On Tue, 4 Dec 2012 08:04:41 -0800 (PST)
Ross Lawley <ross....@gmail.com> wrote:

> Hi,
>
> I have an inherited project which imports data everytime sbt is run,
> however, I want to run a task only if running test / test-only. Whats the
> best way to achieve that?
>
> I've tried adding the following to my build.scala, which I thought would
> run in the Test scope:
>
> lazy val loadTestData = TaskKey[Unit]("load-test-data")
> fullRunTask(loadTestData, Test, "TestDataImport")
>
> But TestDataImport never called as I'd expected - any ideas how best to run
> the task test data before running tests?

That just defines a task test:load-test-data. It doesn't make it a dependency of any other task.

> Or is this out of the scope of sbt and should be put in the some Specs2
> code?

If Specs2 supports this, yes, that would be the right place. Otherwise, there are two options that I can think of.

1. http://www.scala-sbt.org/release/docs/Detailed-Topics/Testing.html#setup-and-cleanup

2. Since you already have defined the task that does the side effect you want, you could say

loadTestData <<= loadTestData runBefore test

That would go after the fullRunTask call. It doesn't work for testOnly, which is an input task. You'd need the workaround of

loadTestData <<= loadTestData runBefore testGrouping

That would work for both test and testOnly and I don't think it would run in unexpected situations.

-Mark

>
> Ross
>
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[Ross Lawley]

Thanks mark got it working as expected using option 1!