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</script> </div></center>   <h2><strong>ChefSpec Tutorials</strong></h2> <p><a name="WhatisChefSpec" id="WhatisChefSpec"></a></p> <h3><strong>What is ChefSpec?</strong></h3> <p>ChefSpec is a unit testing framework for testing Chef cookbooks. ChefSpec makes it easy to write examples and get fast feedback on cookbook changes without the need for virtual machines or cloud servers</p> <p>ChefSpec runs your cookbook(s) locally with Chef Solo without actually converging a node. This has two primary benefits: </p> <ul> <li>It's really fast!<br> </li> <li>Your tests can vary node attributes, operating systems, and search results to assert behavior under varying conditions.</li> </ul> <hr> <p><a name="WritingBasicChefSpecProgram" id="WritingBasicChefSpecProgram"></a></p> <h3><strong>Structure of Cookbooks for ChefSpec</strong></h3> When writing unit tests for your cookbook, the standard is to create a separate spec test for each recipe in the /spec folder. <pre><code> [root@ip-172-31-21-212 webserver]# tree . ├── Berksfile ├── chefignore ├── LICENSE ├── metadata.rb ├── README.md ├── recipes # Recipes │ └── default.rb │ └── recipe2.rb ├── templates # For Templates │ └── file.erb ├── attributes # For Templates │ └── default.rb ├── files # For Templates │ └── index.php dsd.txt ├── spec # UNIT TESTING │ ├── spec_helper.rb │ └── unit │ └── recipes │ └── default_spec.rb └── recipe2_spec.rb └── test # INTEG TESTING └── integration └── default └── default_test.rb </code></pre> <hr> <p><a name="WritingBasicChefSpecProgram" id="WritingBasicChefSpecProgram"></a></p> <h3><strong>Writing Basic ChefSpec Program</strong></h3> <pre><code> # recipe/default.rb package 'foo' # spec/unit/recipes/default_spec.rb require 'chefspec' describe 'example::default' do let(:chef_run) { ChefSpec::SoloRunner.new(platform: 'ubuntu', version: '16.04').converge(described_recipe) } it 'installs foo' do expect(chef_run).to install_package('foo') end end </code></pre> <hr> <p><a name="LetsunderstandChefSpecProgram" id="LetsunderstandChefSpecProgram"></a></p> <h3><strong>Lets understand ChefSpec Program</strong></h3> <p><strong>require 'chefspec'</strong><br> At the top of the spec file we require the chefspec gem. This is required so that our custom matchers are loaded. In larger projects, it is common practice to create a file named "spec_helper.rb" and include ChefSpec and perform other setup tasks in that file.</p> <p><strong>describe 'example::default' do</strong><br> The describe keyword is part of RSpec and indicates that everything nested beneath is describing the example::default recipe. The convention is to have a separate spec for each recipe in your cookbook.</p> <p><strong>let(:chef_run) { ChefSpec::SoloRunner.new(platform: 'ubuntu', version: '16.04').converge(described_recipe) }</strong><br> The let block on creates the ChefSpec:SoloRunner with mocked Ohai data for Ubuntu 16.04 from Fauxhai. It then does a fake Chef run with the run_list of example::default. Any subsequent examples can then refer to chef_run in order to make assertions about the resources that were created during the mock converge.</p> <p><strong>SoloRunner </strong><br> The SoloRunner allows us to simulate testing against the different operating systems (platforms) and versions by passing a parameter. It simulate the Chef run-in memory.</p> <p><strong>described_recipe</strong><br> The described_recipe macro is a ChefSpec helper method that infers the recipe from the describe block. Alternatively you could specify the recipe directly.</p> <p><strong>it 'installs foo' do</strong><br> The it block is an example specifying that the foo package is installed. Normally you will have multiple it blocks per recipe, each making a single assertion.</p> <p><strong>expect(chef_run).to install_package('foo')</strong><br> Each of these examples defined expectations that desired packages will be installed.</p> <p><strong>expect(chef_run).to_not install_package('unzip')</strong><br> Each of these examples defined expectations that desired packages not will be installed.</p> <hr> <p><a name="HowtorunChefSpecTestcases" id="HowtorunChefSpecTestcases"></a></p> <h3><strong>How to run Chef Spec Test cases?</strong></h3> <pre><code> $ chef exec spec $ chef exec bundle exec rake $ rspec spec/unit/recipes/default_spec.rb --color $ chef gem install chefspec $ rspec cookbooks/<Cookbook Name>/spec/default_spec.rb $ gem install rspec $ chef gem install rspec $ chef exec rspec spec/unit/recipes/default_spec.rb </code></pre> <hr>   <div class="btn-group"> <button type="button" class="btn btn-primary">Reference of this article can be found below:-</button> <button type="button" data-toggle="dropdown" class="btn btn-primary dropdown-toggle"><span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://docs.chef.io/chefspec.html" title="Chef Attributes Official Document">Chef Spec Official Document</a></li> <li class="divider"></li> <li><a href="https://github.com/chefspec/chefspec" title="Chef Attributes Official Document">Chef Spec Example Program-1</a></li> <li class="divider"></li> <li><a href="https://github.com/scmgalaxy/chef-chefSpec-foodcritic-coverage" title="Chef Attributes Official Document">Chef Spec Exmaple Program-2</a></li> <li class="divider"></li> <li><a href="http://www.scmgalaxy.com/tutorials/category/chef/" title="Chef Tutorials on scmGalaxy">Chef Tutorials on scmGalaxy</a></li> <li class="divider"></li> <li><a href="../../tutorial/chef/" title="Chef Tutorials by DevOpsSchool">Chef Tutorials by DevOpsSchool</a></li> <li class="divider"></li> <li><a href="../../slides/chef/index.html" title="Chef Training & Courses">Chef PPTs & Slides</a></li> <li class="divider"></li> <li><a href="http://www.scmgalaxy.com/courses/" title="Chef Training & Courses">Chef Training & Courses</a></li> <li class="divider"></li> <li><a href="http://www.scmgalaxy.com/quiz/chef.html" title="Chef Quiz, Questions, Answers">Chef Quiz, Questions, Answers</a></li> <li class="divider"></li> <li><a href="../../video/chef/index.html" title="Chef Video Tutorials ">Chef Video Tutorials </a></li> <li class="divider"></li> <li><a href="https://groups.google.com/forum/#!forum/devopssupport" title="Chef Job Support">Chef Job Support</a></li> <li class="divider"></li> <li><a href="http://www.bestdevops.com/?s=chef" title="Chef News & Events">Chef News & Events</a></li> <li class="divider"></li> <li><a href="http://www.cotocus.com/" title="">Chef Consulting & Training Providers</a></li> <li class="divider"></li> <li><a href="http://devopscertification.co/" title="">Chef Certifications & Training</a></li> <li class="divider"></li> </ul> </div> <div class="btn-group"> <button type="button" class="btn btn-primary">Chef Courses | Training | Trainer | Job Support | Chef Consultant</button> <button type="button" data-toggle="dropdown" class="btn btn-primary dropdown-toggle"><span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="http://www.scmgalaxy.com/events/" title="Chef Training & Webinar Events">Chef Training & Webinar Events</a></li> <li class="divider"></li> <li><a href="../../video/chef/index.html" title="">Chef Video Courses</a></li> <li class="divider"></li> <li><a href="http://www.scmgalaxy.com/courses/chef" title="Chef Training and Course">Chef Training and Course</a></li> <li class="divider"></li> <li><a href="http://www.scmgalaxy.com/courses/agenda/configuration-management-tools/chef-training.html" title="Chef Online Training & Course by scmGalaxy">Chef Online Training & Course by scmGalaxy</a></li> <li class="divider"></li> <li><a href="Other DevOps Course" title="">Other DevOps Course</a></li> <li><a href="http://rajeshkumar.xyz/cv/" title="">Chef Trainer, Consultant & Coach - Rajesh Kumar</a></li> <li class="divider"></li> </ul> </div>  <p></p> <center><div class="top-banner"> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-1785302811177732" data-ad-slot="6802940713"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); 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