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Using Knapsack Pro with Cucumber

Load tests faster with spring​

Take a look at Using Knapsack Pro with spring.

Require different config files​

You may want to require different Cucumber configurations for different sets of tests (e.g., user dashboard tests vs admin dashboard tests). You can do so with KNAPSACK_PRO_TEST_DIR and KNAPSACK_PRO_TEST_FILE_PATTERN:

# User
export KNAPSACK_PRO_TEST_DIR="features/support/cucumber_config_1.rb"
export KNAPSACK_PRO_TEST_SUITE_TOKEN_CUCUMBER=api_token_1
export KNAPSACK_PRO_TEST_FILE_PATTERN="features/user_dashboard/**{,/*/**}/*.feature"
bundle exec rake "knapsack_pro:queue:cucumber[--verbose]"

# Admin
export KNAPSACK_PRO_TEST_DIR="features/support/cucumber_config_2.rb"
export KNAPSACK_PRO_TEST_SUITE_TOKEN_CUCUMBER=api_token_2
export KNAPSACK_PRO_TEST_FILE_PATTERN="features/admin_dashboard/**{,/*/**}/*.feature"
bundle exec rake "knapsack_pro:queue:cucumber[--verbose]"

Troubleshooting​

How do I fix invalid option: --require?​

If you use Cucumber 2.99 and cucumber-rails, your tests could fail with exit status 1 and the following error:

invalid option: --require

minitest options:
    -h, --help                       Display this help.
        --no-plugins                 Bypass minitest plugin auto-loading (or set $MT_NO_PLUGINS).
    -s, --seed SEED                  Sets random seed. Also via env. Eg: SEED=n rake
    -v, --verbose                    Verbose. Show progress processing files.
    -n, --name PATTERN               Filter run on /regexp/ or string.
        --exclude PATTERN            Exclude /regexp/ or string from run.

Known extensions: rails, pride
    -w, --warnings                   Run with Ruby warnings enabled
    -e, --environment ENV            Run tests in the ENV environment
    -b, --backtrace                  Show the complete backtrace
    -d, --defer-output               Output test failures and errors after the test run
    -f, --fail-fast                  Abort test run on first failure or error
    -c, --[no-]color                 Enable color in the output
    -p, --pride                      Pride. Show your testing pride!

The issue happens when MiniTest is required after MultiTest.disable_autorun has been called. You can fix it with:

# features/support/env.rb

require 'cucumber/rails'

# After requiring cucumber/rails
require 'multi_test'
MultiTest.disable_autorun

How do I fix cannot load such file -- stripe_mock (LoadError)?​

Knapsack Pro relies on Cucumber::Rake::Task, which uses Bundler. Bundler employs a performance trick that may cause some subtle side-effects. You can disable such a trick with:

export BUNDLE_DISABLE_EXEC_LOAD=true