Testing with Travis CI an AngularJS application that uses SASS

Question

I can't figure out why my TravisCI build keep failing (on node 0.10) while compiling my SASS files.

I keep receiving the same error:

Running "concurrent:test" (concurrent) task
Warning: Running "compass:dist" (compass) task
Warning: You need to have Ruby and Compass installed and in your system PATH for this task to work. More info: https://github.com/gruntjs/grunt-contrib-compass Use --force to continue.

Aborted due to warnings.

But I've installed both sass and grunt-contrib-sass, as you can see by my .travis.yml

language: node_js                                                                                                                              

before_install:                                                                                                                                
  - gem install sass                                                                                                                           

node_js:                                                                                                                                       
  - '0.8'                                                                                                                                      
  - '0.10'                                                                                                                                     

before_script:                                                                                                                                 
  - 'npm install -g bower grunt-cli karma'                                                                                                     
  - 'bower install'                                                                                                                            

script: grunt    

and my (excerpt) of package.json

"grunt-bower-install": "~1.0.0",                                                                                                          
"grunt-concurrent": "~0.5.0",                                                                                                              
"grunt-contrib-clean": "~0.5.0",                                                                                                           
"grunt-contrib-compass": "~0.7.2",                                                                                                         
"grunt-contrib-concat": "~0.3.0",                                                                                                          
"grunt-contrib-connect": "~0.5.0",                                                                                                         
"grunt-contrib-copy": "~0.4.1",            

Anyone knows what could be going on?

Link to my Travis build: https://travis-ci.org/dmatteo/ng-bootstrap-pure/builds

p.s. of course my locale grunt is testing and building flawlessly

Answer 1

It looks like the installation of sass wasn't enough, and compass was needed to. Moreover, I needed to specify that a GUI was needed, and this is done in the first two lines of before_install

So, this is the working .travis.yml:

language: node_js

before_install:
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
  - gem install sass
  - gem install compass

node_js:
  - '0.10'
  - '0.11'

before_script:
  - 'npm install -g bower grunt-cli karma'
  - 'bower install'

script: grunt