Estimated time: 1 hour (with your own virtual machines)

This step introduces you to fundamentals of cookbook development and walks you through the process of creating, editing, and testing a simple cookbook. These are the same basic steps that you will expand on in developing your Chef Desktop cookbook.

1. Learn about testing with Test Kitchen
2. Set up your Chef development environment
3. Make a demo cookbook
4. Test your cookbook locally
5. Test your cookbook with Test Kitchen, once you have your virtual machine images

Developing Cookbooks

Testing is central to good software development. Testing your Chef Desktop cookbook provides you the opportunity to detect and correct problems before putting changes into production. Testing saves time and money, but it adds value by helping your organization achieve and maintain operational velocity.

Licenses

It is important to understand your operating license and service agreements. The best place to begin is find and understand your SLA:

• Windows Licenses
• Apple macOS SLA

Setup Your Development Environment

In this step, you will prepare your workstation for developing, testing, and deploying the Chef Desktop cookbook.

1. Create your local repo

   You will need a local repository on your workstation for storing your cookbooks and related chef work, and for sharing it with GitHub or another version control system.

   From the command line in your root folder (c:\ or ~/), run:

   chef generate repo my_repo
   

Make Your First Cookbook

This is a practice cookbook to understand how to test.

1. Create your cookbook

   chef generate cookbook my_repo/cookbooks/my_cookbook
   

2. Edit the metadata.rb file

   Open your repo in Visual Studio Code. The one key file you will want to manage is the metadata.rb file. Please take a moment now to add your contact information and enter a starting version number for your cookbook.

   name 'my_cookbook'
   maintainer 'The Authors'
   maintainer_email '[email protected]'
   license 'All Rights Reserved'
   description 'Installs/Configures my_cookbook'
   version '0.1.0'
   chef_version '>= 16.0'
   

3. Edit the default recipe

   Open my_repo\cookbook\my_cookbook\recipes\default.rb in Visual Studio and add:

   For Windows:

   powershell_script 'get my path' do
     code <<-CODE
     [Environment]::GetEnvironmentVariable("Path")
     CODE
   end
   

   For macOS:

   bash 'get my path' do
     user 'root'
     code <<-EOH
     echo $PATH
     EOH
   end
   

   • Spacing matters! Be mindful of spaces
   • Use LF line spacing and not CRLF. (Look to the bottom right of the status bar in Visual Studio Code)

Testing cookbooks with Test Kitchen

Test Kitchen was installed with Chef Workstation. It provides Chef Infra with a testing harness for cookbooks that uses virtual machines(VMs). Consult your Apple and Microsoft licenses and service level agreements (SLA) to understand your options for acquiring or creating VMs for development.

Test Kitchen Integrations

Test Kitchen uses a driver plugin architecture to enable Test Kitchen to test instances on cloud providers such as Amazon EC2, Google Compute Engine, and Microsoft Azure. You can also test on multiple local hypervisors, such as VMware, Hyper-V, or VirtualBox. Test Kitchen Documentation and the Test Kitchen GitHub Repository.

Run Test Kitchen

1. Run the Virtual Devices

   When working with desktop cookbook that you received from Chef, you downloaded the two virtual devices, also called testing images. Now issue the following command to get them started:

   kitchen create
   

2. Apply the Cookbooks to the Images

   Run the following command to apply, or ‘converge’, the cookbooks with the base OS image:

   kitchen converge
   

3. Verify the settings

   Confirm that the converged code is the code that you meant to apply. In VSCode, navigate to the test\integration\default directory and examine the generated integration tests. Carefully go through these tests and adjust them to match the setting to the changes in the default.rb file. Next, run:

   kitchen verify
   

   If any of the tests fail, check the output and compare your settings in the mac.rb or windows.rb files against the matching tests.

4. Cleanup

   When you finish with your testing, you can run the following command to delete the running test images:

   kitchen destroy
   

Kitchen Test

Once you are familiar with Test Kitchen, you can perform all of the steps at once, including cleanup, with:

kitchen test