Correct way to start RSpec-puppet unit tests -


i have created simple puppet 4 class , unit test go along follows (after executing touch metadata.json; rspec-puppet-init while in modules/test/):

# modules/test/manifests/hello_world1.pp class test::hello_world1 {   file { "/tmp/hello_world1":     content => "hello, world!\n"   } }  # modules/test/spec/classes/test__hello_world1_spec.rb require 'spec_helper' describe 'test::hello_world1'   { is_expected.to compile }   { is_expected.to contain_file('/tmp/hello_world1')\     .with_content(/^hello, world!$/) } end

i can run unit test executing rspec spec/classes/test__hello_world1_spec.rb while in modules/test/.

i proceed more advanced class uses code module, namely concat (the module has arleady been installed in modules/concat):

# modules/test/manifests/hello_world2.pp class test::hello_world2 {   concat{ "/tmp/hello_world2":     ensure => present,   }   concat::fragment{ "/tmp/hello_world2_01":     target  => "/tmp/hello_world2",     content => "hello, world!\n",     order   => '01',   } }  # modules/test/spec/classes/test__hello_world2_spec.rb require 'spec_helper' describe 'test::hello_world2'   { is_expected.to compile }   # ... end

when attempt running unit test rspec spec/classes/test__hello_world2_spec.rb while in modules/test receive error message includes:

failure/error: { is_expected.to compile } error during compilation: evaluation error: error while evaluating resource statement, unknown resource type: 'concat'

i suspect root cause rspec cannot find other module(s), because has not been told "modulepath".

my question this: how supposed start unit tests, ones require access other modules?

here* how set rspec-puppet scratch.

first, need ensure have installed ruby gems platform.

then, install bundler:

$ gem install bundler

next, create minimal gemfile (this bundler's config file) following content:

source 'https://rubygems.org'  group :test   gem 'puppetlabs_spec_helper', :require => false end  gem 'puppet'

(note paths provide in answer relative modules/test directory mentioned in question. likewise, assumed current working directory.)

now, install "bundle" (set of gems) using:

$ bundle install

if you're interested in gems installed try:

$ bundle show $ bundle show puppet

etc.

now, procedure relies heavily on puppetlabs_spec_helper gem, recommending @ least skim read docs before proceeding (ref).

note 1 of dependencies of puppetlabs_spec_helper installed rake. rake tool use run tests. pre-configured puppetlabs_spec_helper, , can see available tasks running:

$ bundle exec rake -t

now, come immediate problem in code: code depends on puppet forge module, puppetlabs/concat haven't made available.

to tell puppetlabs_spec_helper you, need file .fixtures.yml following content:

fixtures:   forge_modules:     stdlib: puppetlabs/stdlib     concat: puppetlabs/concat   symlinks:     test: "#{source_dir}"

note need puppetlabs/stdlib, because dependency of puppetlabs/concat.

also note need symlinks block, bit confusing @ first. it's bit hacky really, how puppetlabs_spec_helper makes module-under-test available in same directory other module dependencies. (read docs linked above more info here.)

finally, need spec/spec_helper.rb file, single line:

require 'puppetlabs_spec_helper/module_spec_helper'

with of in place, , given code samples , test content posted, tests pass when run:

$ bundle exec rake spec

note have written of in more detail in blog post, showing how set rspec-puppet , more scratch (ref), , still appears up-to-date reference on subject.

(at time of writing this, puppet has never maintained official docs rspec-puppet, because tool not written puppet.)

* should noted puppet has released puppet development kit, see here (ref). of above may or unnecessary.


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