Chef: Test Kitchen

1. Install docker with the following command:
   yum install docker
   systemctl start docker


2. Then we need to install the kitchen-docker ruby gem.
   chef gem install kitchen-docker


3. Create a cookbook:
   chef generate cookbook my_cookbook


4. Edit the .kitchen.yml file in the generated cookbook.
   Change the driver name from vagrant to docker and delete the line
   - name: centos-7
   Save and close.


5. Then execute kitchen converge. This command will create a docker container for us and put all the settings in place.
   The output will be something as follows:
   Synchronizing Cookbooks:
   - my_cookbook (0.1.0)
   Installing Cookbook Gems:
   Compiling Cookbooks...
   Converging 0 resourcesRunning handlers:
   Running handlers complete
   Chef Client finished, 0/0 resources updated in 18 seconds
   Finished converging <default-ubuntu-1604> (7m3.52s).


6. Then run kitchen list
   The output will be something as follows:
   Instance Driver Provisioner Verifier Transport Last Action Last Error
   default-ubuntu-1604 Docker ChefZero Inspec Ssh Converged <None>


7. Now we need to verify whether the test was successful or not. Execute
   kitchen verify
   -----> Starting Kitchen (v1.17.0)
   -----> Setting up <default-ubuntu-1604>...
   Finished setting up <default-ubuntu-1604> (0m0.00s).
   -----> Verifying <default-ubuntu-1604>...
   Loaded tests from test/smoke/default
   
   Profile: tests from test/smoke/default
   Version: (not specified)
   Target: ssh://kitchen@localhost:32768
   
    
   
   User root
   ↺
   Port 80
   ↺
   
   Test Summary: 0 successful, 0 failures, 2 skipped
   Finished verifying <default-ubuntu-1604> (0m3.62s).
   -----> Kitchen is finished. (0m6.58s)


8. Edit the file vi test/smoke/default/default_test.rb
   Add the following lines to it:
   describe package('cowsay') do
     it {should be_installed }
   end


9. Then run kitchen verify. This test should return failed:
   >>>>>> ------Exception-------
   >>>>>> Class: Kitchen::ActionFailed
   >>>>>> Message: 1 actions failed.
   >>>>>> Verify failed on instance <default-ubuntu-1604>. Please see .kitchen/logs/default-ubuntu-1604.log for more details
   >>>>>> ----------------------
   >>>>>> Please see .kitchen/logs/kitchen.log for more details
   >>>>>> Also try running `kitchen diagnose --all` for configuration


10. Edit the following file vi recipes/default.rb
    Add the line package 'cowsay'
    Then execute kitchen converge and then kitchen test.
    The output should be something like
    System Package
    ✔ cowsay should be installed
    
    Test Summary: 1 successful, 0 failures, 1 skipped