# How to run a single test with Test::Unit?

**URL:** <https://www.ruby-forum.com/t/how-to-run-a-single-test-with-test-unit/196942>\
**Category:** Ruby\
**Created:** [April 17, 2009, 6:45pm UTC](https://www.ruby-forum.com/t/how-to-run-a-single-test-with-test-unit/196942 "2009-04-17T18:45:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![fipa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/9e8a1a/32.png) [@fipa](https://www.ruby-forum.com/u/fipa)\
**Post date:** [April 17, 2009, 6:45pm UTC](https://www.ruby-forum.com/t/how-to-run-a-single-test-with-test-unit/196942/1 "2009-04-17T18:45:34Z")

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Hi,

I have tests written as:

test “some test” do  
…  
end

But when I want to run a single test it doesn’t work like before:

$ ruby test/functional/some\_controller\_test.rb -n some\_test

Iget 0 test, 0 assertions…

I also rewrote the test to :

def some\_test  
…  
end

And still no luck. Has anything changed from the various tutorials found  
on the internet? Also [guides.rubyonrails.org](http://guides.rubyonrails.org) has nothing about that.

---

<div class="post-metadata">

**Author:** ![fipa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/9e8a1a/32.png) [@fipa](https://www.ruby-forum.com/u/fipa)\
**Post date:** [April 17, 2009, 6:51pm UTC](https://www.ruby-forum.com/t/how-to-run-a-single-test-with-test-unit/196942/2 "2009-04-17T18:51:21Z")

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On Fri, Apr 17, 2009 at 11:45 AM, Fernando P. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

> And still no luck. Has anything changed from the various tutorials found  
> on the internet? Also [guides.rubyonrails.org](http://guides.rubyonrails.org) has nothing about that.

test “some test” do …

becomes

def test\_some\_test …

so use -n test\_some\_test

jeremy

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<div class="post-metadata">

**Author:** ![fipa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/9e8a1a/32.png) [@fipa](https://www.ruby-forum.com/u/fipa)\
**Post date:** [April 17, 2009, 6:56pm UTC](https://www.ruby-forum.com/t/how-to-run-a-single-test-with-test-unit/196942/3 "2009-04-17T18:56:02Z")

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> test “some test” do …
> 
> becomes
> 
> def test\_some\_test …
> 
> so use -n test\_some\_test
> 
> jeremy

Unfortunately it doesn’t work ☹

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<div class="post-metadata">

**Author:** ![fipa](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/9e8a1a/32.png) [@fipa](https://www.ruby-forum.com/u/fipa)\
**Post date:** [April 17, 2009, 6:59pm UTC](https://www.ruby-forum.com/t/how-to-run-a-single-test-with-test-unit/196942/4 "2009-04-17T18:59:50Z")

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> > so use -n test\_some\_test
> > 
> > jeremy
> 
> Unfortunately it doesn’t work ☹

Damn! I didn’t spot the test\_ my eyes are getting tired! Enough work for  
today.

Thanks and have a nice weekend.