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Rails 5 Test Prescriptions
book

Rails 5 Test Prescriptions

by Noel Rappin
February 2018
Intermediate to advanced content levelIntermediate to advanced
406 pages
9h 52m
English
Pragmatic Bookshelf
Content preview from Rails 5 Test Prescriptions

More Expectation Annotations

RSpec allows a number of different annotations to the expectation part of declaring a test double. You can specify more complex return values or a variety of arguments to the stubbed method.

Stubbing Return Values

A couple of advanced usages of returns might be valuable now and again. If you’ve multiple return values specified, the stubbed method returns one at a time:

 it ​"stubs with multiple return values"​ ​do
  task = Task.new
  allow(task).to receive(​:size​).and_return(1, 2)
  assert_equal(1, task.size)
  assert_equal(2, task.size)
  assert_equal(2, task.size)
 end

The return values of the stubbed method walk through the values passed to and_return. Note that the values ...

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Publisher Resources

ISBN: 9781680505566Errata Page