Cucumber Steps for Testing Varnish VCL
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README.md

Cucumber Varnishtest

This let's you use Gherkin, the language of BDD, to write behavior-level checks for your VCL.

Project status

This project is now legit!

Install the Gem and check out this example to get started.

This is probably the easiest/best way to get started with testing your Varnish config. However, the step definitions are not sufficient for complicated VCL use-cases. PRs welcome ;)

If you do need to iterate on the steps, working directly out of a clone is likely easiest. If you want to get started testing your VCL in CI like travis / jenkins / CircleCI, using the steps packaged in the gem is probably easiest.

Examples

To run, simply run cucumber from this directory.

You can use your own VCL and write your own features in a .feature file.

±  |master ✗| → cucumber
Feature: Static Server Headers

  Scenario: Simple Single Request          # features/varnishtest.feature:3
    Given varnish running with example.vcl # features/step_definitions/varnish_steps.rb:4
    When we GET /images.png                # features/step_definitions/varnish_steps.rb:9
    Then the response code should be 200   # features/step_definitions/varnish_steps.rb:29
    And it should pass varnishtest         # features/step_definitions/varnish_steps.rb:25

  Scenario: Checking Response Headers                              # features/varnishtest.feature:9
    Given varnish running with example.vcl                         # features/step_definitions/varnish_steps.rb:4
    When we GET /images.png                                        # features/step_definitions/varnish_steps.rb:9
    Then the response header X-Served-By should be "My App Server" # features/step_definitions/varnish_steps.rb:21
    And it should pass varnishtest                                 # features/step_definitions/varnish_steps.rb:25

  Scenario: POST should never be cached    # features/varnishtest.feature:15
    Given varnish running with example.vcl # features/step_definitions/varnish_steps.rb:4
    When we POST /form                     # features/step_definitions/varnish_steps.rb:9
    Then there should be 1 passed requests # features/step_definitions/varnish_steps.rb:49
    And it should pass varnishtest         # features/step_definitions/varnish_steps.rb:25

  Scenario: Multiple Requests without warming # features/varnishtest.feature:21
    Given varnish running with example.vcl    # features/step_definitions/varnish_steps.rb:4
    When we GET /images.png                   # features/step_definitions/varnish_steps.rb:9
    And we GET /images2.png                   # features/step_definitions/varnish_steps.rb:9
    And we GET /images2.png                   # features/step_definitions/varnish_steps.rb:9
    Then there should be 2 cache misses       # features/step_definitions/varnish_steps.rb:41
    Then there should be 1 cache hit          # features/step_definitions/varnish_steps.rb:37
    And it should pass varnishtest            # features/step_definitions/varnish_steps.rb:25

  Scenario: Check Dynamic header                                     # features/varnishtest.feature:30
    Given varnish running with example.vcl                           # features/step_definitions/varnish_steps.rb:4
    When we GET /monalisa.png                                        # features/step_definitions/varnish_steps.rb:9
    Then the response header X-Requested-URL should be /monalisa.png # features/step_definitions/varnish_steps.rb:21
    And it should pass varnishtest                                   # features/step_definitions/varnish_steps.rb:25

5 scenarios (5 passed)
23 steps (23 passed)
0m7.467s

Usage

Check out this example.

Or simply clone this repo and run cucumber

Dependencies

Make sure you have 'varnishtest' installed!

# On OSX
$ brew install varnish
$ varnishtest -h
usage: varnishtest [options] file ...
    -b size                      # Set internal buffer size (default: 512K)
    -D name=val                  # Define macro
    -i                           # Find varnishd in build tree
    -j jobs                      # Run this many tests in parallel
    -k                           # Continue on test failure
    -L                           # Always leave temporary vtc.*
    -l                           # Leave temporary vtc.* if test fails
    -n iterations                # Run tests this many times
    -q                           # Quiet mode: report only failures
    -t duration                  # Time tests out after this long
    -v                           # Verbose mode: always report test log
    -W                           # Enable the witness facility for locking

Install cucumber

gem install bundler
bundle install
bundle exec cucumber --version

References

Read more about varnish test at

Thanks

Thanks to