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my RSpec note

n350071 profile image n350071๐Ÿ‡ฏ๐Ÿ‡ต ใƒปUpdated on ใƒป1 min read

๐Ÿญ Preparing data(let, before)

Factorybot




๐Ÿงช Testing

expect

block needed matcher

it{ expect{something.save}.to change{ SomethingRelation.count }.by(3) }
it{ expect{something.save!}.to raise_error(StandardError) }

Model Spec

Controller/Request Spec

Feature Spec

๐Ÿงช Advanced Testing

shared example/context



Stub / Dowble

before{ allow_any_instance_of(ClassName).to receive(:a_method).and_return('great!') }
before{ allow_any_instance_of(ClassName).to receive(:a_method).and_raise(StandardError.new("error"))  }
before{ ClassName.any_instance.stub(:a_method).and_return('cool!') }
before{ ClassName.any_instance.stub(:a_method).and_raise('error!') }

๐Ÿ˜Ž Run RSpec

bundle exec rspec
bundel exec rspec spec/models/xxxx_spec.rb           ## specify specific file
bundel exec rspec spec/models/xxxx_spec.rb -e status ## specify a test in specific file

Troubleshooting

Sometimes, the test DB is not migrated(updated). If it occurs after you run rake db:rollback, then try this.

rake db:rollback RAILS_ENV=test
rake db:migrate RAILS_ENV=test

Discussion (0)

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