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Start from scratch
$ gem install rails -v "~> 3.0.0"
Generate an app
$ rails new example $ cd example
Add rspec-rails to the Gemfile
$ echo 'gem "rspec-rails", :group => [:development, :test]' >> Gemfile
Install the bundle
$ bundle install
$ rails generate rspec:install
Generate a scaffold
$ rails generate scaffold Widgets name:string
This generates files in the
spec directories. The files in the
app directory are generated by Rails, and Rails delegates the generation of
the files in the
spec directory to RSpec.
$ rake db:migrate && rake db:test:prepare
$ rake spec
$ rspec spec --format documentation
If all went well, you should see output ending with:
29 examples, 0 failures, 2 pending
This output also includes the following controller spec:
WidgetsController GET index assigns all widgets as @widgets GET show assigns the requested widget as @widget GET new assigns a new widget as @widget GET edit assigns the requested widget as @widget POST create with valid params creates a new Widget assigns a newly created widget as @widget redirects to the created widget with invalid params assigns a newly created but unsaved widget as @widget re-renders the 'new' template PUT update with valid params updates the requested widget assigns the requested widget as @widget redirects to the widget with invalid params assigns the widget as @widget re-renders the 'edit' template DELETE destroy destroys the requested widget redirects to the widgets list
Output like this can help to quickly gain a high level understanding of how an
object behaves. It also exposes which cases have been specified and which have
not. Note the balance between the examples for the
actions. If the
redirects to the widget example was missing from one or the
other, it would be easy to spot.
Take a look at the generated
get a sense of how to organize your specs to generate output like this.
Last published almost 7 years ago by dchelimsky.
RSpec Rails settings