Ruby conf 2016 - Secrets of Testing Rails 5 Apps

Secrets of Testing Rails 5 Apps

Rails Tests

Unit tests -> For models

Functional tests -> For controllers

Integration tests -> For scenarios of a particular feature

Change in rails 5

Unit tests -> No big change

Controller tests -> are most affected

What do we test in a controller test ?

Request --------------> Response

Controller tests actually lie...

Integration tests

Integration tests

Almost same as controller tests

Close to the real world

But before rails 5 they were really slow

Integration Controller tests are default in Rails 5

Functional Controller tests are soft deprecated

Old functional tests will continue to work for now***

Might be extracted in separate gem in Rails 5.1

BLACK BOX

Sprockets

Sprockets

Speeding Up Your Test Suite

Returns a saved User instance (writes to DB)

user = create(:user)

# Returns a User instance that's not saved (does not write to DB)

user = build(:user)

factory :user do

association posts

end

FactoryGirl.build(:user) #this creates posts in the database even though you are only building the parent object(user)

Returns an object with all defined attributes stubbed out

stub = build_stubbed(:user)

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