shoulda-matchers RSpec expect syntax

Question

What is the correct format for using shoulda-matchers and RSpec\'s new expect syntax?

Answer 1

I'll suplement the answer of @peter-alfvin. In case you test the model and its migration themselves with shoulda-matchers you can't use :expect outside of it block, so can't write:

RSpec.describe ModelName, type: :model do
   expect(subject).to belong_to(:user)
end

And you will get the expection:

`expect` is not available on an example group (e.g. a `describe` or `context` block).

but correct version is:

RSpec.describe ModelName, type: :model do
   it { expect(subject).to belong_to(:user) }
end