Adding snapshot testing to RSpec, inspired by Jest.
Add this line to your application's Gemfile:
And then execute:
Or install it yourself as:
$ gem install rspec-snapshot
RSpec.configure do |config| # The default setting is `:relative`, which means snapshots will be generate to # the relative path of the spec file. config.snapshot_dir = "spec/fixtures/snapshots" end
Rails request testing
RSpec.describe "Posts", type: :request do describe "GET /posts" do it "returns a list of post" do get posts_path expect(response.body).to match_snapshot("get_posts") end end end
Rails view testing
RSpec.describe "widgets/index", type: :view do it "displays all the widgets" do assign(:widgets, [ Widget.create!(:name => "slicer"), Widget.create!(:name => "dicer") ]) render expect(rendered).to match_snapshot("widgets/index") end end
Use your imagination for other usages!
After checking out the repo, run
bin/setup to install dependencies. Then, run
rake test to run the tests. 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 tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/yesmeck/rspec-snapshot.