Shoulda Matchers for ViewComponent

Adds convenient ViewComponent matchers to shoulda matchers.

Installation

Include shoulda-matchers-viewcomponent in your Gemfile:

group :test do
  # ...
  gem 'shoulda-matchers-viewcomponent'
end

And run bundle.

Then configure Shoulda to use the ViewComponent matchers:

# If using RSpec, this would typically go in spec/rails_helper.rb
Shoulda::Matchers.configure do |config|
  config.integrate do |with|
    # ...
    with.library :view_component
  end
end

Usage

At the moment only one matcher exists, use_collection_parameter, which checks that a collection parameter was set for the component through with_collection_parameter. E.g.:

# app/components/product_component.rb
class ProductComponent < ViewComponent::Base
  with_collection_parameter :product

  def initialize(product:, product_counter:, product_iteration:)
    # ...
  end
end

# spec/components/product_component_spec.rb
RSpec.describe ProductComponent, type: :component do
  it do
    expect(described_class).to use_collection_parameter(:product)
      .with_counter   # Optional, checks for product_counter: param
      .with_iteration # Optional, checks for product_iteration: param
  end
end

Development

After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/beezwax/shoulda-matchers-viewcomponent.

License

The gem is available as open source under the terms of the MIT License.