Hornsby
29
Aug
Scenarios look like:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | scenario :apple do
@apple = Fruit.create! :species => 'apple'
end
scenario :orange do
@orange = Fruit.create! :species => 'orange'
end
scenario :fruitbowl => [:apple,:orange] do
@fruitbowl = FruitBowl.create! :fruit => [@apple,@orange]
end
scenario :kitchen => :fruitbowl do
@kitchen = Kitchen.create! :fruitbowl => @fruitbowl
end |
By default, these are loaded from RAILS_ROOT/spec/hornsby_scenarios.rb
...and you use them in specs like:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | describe Fruit, "@apple" do
before do
hornsby_scenario :apple
end
it "should be an apple" do
@apple.species.should == 'apple'
end
end
describe FruitBowl, "with and apple and an orange" do
before do
hornsby_scenario :fruitbowl
end
it "should have 2 fruits" do
@fruitbowl.should have(2).fruit
end
end |
Setup
Install the plugin:
./script/plugin install http://rails-oceania.googlecode.com/svn/lachiecox/hornsby
Or piston:
piston import http://rails-oceania.googlecode.com/svn/lachiecox/hornsby vendor/plugins/hornsby
Add the following to spec_helper.rb
1 2 3 4 5 6 7 8 | # by default this loads scenarios from RAILS_ROOT/spec/hornsby_scenarios.rb
Hornsby.load
Spec::Runner.configure do |config|
...
config.include(HornsbySpecHelper)
end |
Advanced Usage
Its just ruby, right? So go nuts:
1 2 3 4 5 6 | 1.upto(9) do |i|
scenario("user_#{i}") do
user = User.create! :name => "user#{i}"
instance_variable_set("@user_#{i}",user)
end
end |
Rake
If you’d like simply to load your scenarios into a database, use the rake task like so:
$ rake hornsby:scenario RAILS_ENV=test SCENARIO=fruitbowl
TODO
- Make transactional for speed.
- Add scenario namespaces for better organisation.
- Detect scenario cycles.
Credits
The code is based on Err’s code found in this post
License
MIT, see LICENCE

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