Posts Tagged ‘node’

Having Jasmine tests results in TeamCity via node.js (on windows) invoked from powershell

September 26th, 2011 2 comments

I test my javascript code via jasmine on a windows machine. I primarily write jquery-plugin-style code. Now I need to get this onto CI. A colleague I worked with took my test strategy in jasmine and wrote a library to run it very quickly on node.js. There are other places showing how to integrate with TeamCity and Jasmine with JsTestDriver or Qunit and also the documentation on how to easily integrate service messages with TeamCity.

One caveat: I am not wanting to test cross-browser functionality. Therefore, I don’t need or want a browser or the associated slowness and the brittleness of cross-process orchestration. (Note: I have tried to stabilise these types of tests using NUnit and MSTest runners invoking selenium and/or watin – it gets unstable quickly and there is too much wiring up.)

So this approach is simple and blindly fast thanks to Andrew McKenzie’s jasmine-node-dom which is an extension of jasmine-dom. He wrote his for linux and his example is with Jenkins so I have forked a version for windows which has a node.exe binary which is available form node.js.

Anyway, this blog covers the powershell script to invoke the jasmine-node-dom and publish it to TeamCity.

Here’s the script:

build.ps1 (or directly in TeamCity)

	$node_dir = "node-jasmine-dom\bin"	

	& "$node_dir\node.exe" "$node_dir\jasmine-dom" `   
				--config tests.yaml `
				--format junit `
				--output javascript-results.xml 

	write-host "##teamcity[importData type='junit' path='javascript-results.xml']"    

An explanation if it isn’t obvious. First let’s start with files that are needed. I have the windows node-jasmine-dom installed in its own directory. I then call node.exe with jasmine-dom. That should just work all out-of-the-box. I then tell it where the manifest is that knows about the tests (tests.yaml – see below for example) and then I give it the results file. jasmine-node-dom is great because it reads the SpecRunner.html and reconstructs the DOM enough that the tests are valid.

Finally, I tell teamcity to read the results out of junit. This is very easy and I recommend that you find out what else you need to do.


	    name: Example test one
	    runner: ./tests/SpecRunner.html

This yaml file points to the Jasmine runner.

Other points:

* All my jasmine tests are invoked from their own SpecRunner.html file by convention
* I will write a script that will automatically generate the yaml file
* I always put all my powershell scripts into psake scripts (then they can be run by the dev or the build machine)
* my code isn’t quite filed as above

Summary Instructions:

# download jasmine-node-dom and install in tools\ directory
# add new Task to build scripts (I use psake)
# add a new test.yaml manifest (or build one each time)
# Add new jasmine tests via SpecRunner.html with your javascript
# Ensure that the build script is run via a build step in a configuration from TeamCity
# Now you can inspect the Tests in TeamCity

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