"stack level too deep" when "expect().to receive().once" fails

[passalini]

Ruby, Rails and RSpec versions

ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin17]
Rails 5.2.1
RSpec 3.8

• rspec-core 3.8.0
• rspec-expectations 3.8.2
• rspec-mocks 3.8.0
• rspec-rails 3.8.1
• rspec-support 3.8.0

Rails app with the following problem

repo: https://github.com/passalini/rspec-issue-2049
circle: https://circleci.com/gh/passalini/rspec-issue-2049/14

Observed behaviour

I'm currently updating an app from Rails 4.2 to 5 and I'm getting a strange behaviour with an old test that is green on 4.2 and red on 5. On Rails 5 some callbacks have changed and for that reason my test is breaking but the rspec output is wrong!

First it showed a huge log and I couldn't see the error. After putting a rescue I saw the stack level too deep was throwed only when you call more than how much you had specified at the test.
So, if you use receive(:email).twice the error is throwed at the third call.

I changed the test to a more simple test and it is still showing a huge log and a wrong error. Bellow I sent the test and a part of the log...

Test:

it 'should show only 2 times' do
  expect(@student).to     receive(:email).once.and_call_original
  @student.email
  @student.email
end

Output with rescue:

Failure/Error: expect(student).to     receive(:email).once.and_call_original

       (#<Student id: 811082057, first_name: "Anitta", last_name: "MC", email: "anitta@student.com", cpf: "35171617210", phone: "(21) 99544-3049", skype: nil, company_name: nil, company_position: nil, born_at: "1993-03-30", biography: nil, cover_image_url: "https://lh6.googleusercontent.com/-sBdeyWCqDgE/AAA...", created_at: "2018-12-18 18:17:14", updated_at: "2018-12-18 18:17:14", organization_id: 1, role_id: nil, twitter: nil, facebook: nil, username: nil, see_all: false, rg: "26.412.324-5", extra_phone: nil, session_token: nil >).email(*(any args))
           expected: 1 time with any arguments
           received: 659 times with any arguments

Output without rescue:

   # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `block in serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `each'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activemodel-5.2.1/lib/active_model/serialization.rb:137:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/activerecord-5.2.1/lib/active_record/serialization.rb:19:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:116:in `serializable_hash'
     # /Users/passalini/.rbenv/versions/2.5.1/gemsets/Core/gems/devise-4.5.0/lib/devise/models/authenticatable.rb:122:in `inspect'
     # ./spec/serializers/student_serializer_spec.rb:89:in `block (5 levels) in <top (required)>'

Finished in 1.09 seconds (files took 15.24 seconds to load)
1 example, 1 failure

[fables-tales]

Hi @passalini

Thanks for the issue. We need a little more detail to be able to reproduce this.

Could you please provide us with a rails app that we can clone that demonstrates the issue. Specifically it'd be great if

1. you could rails new an application and commit
2. make all the changes necessary to reproduce the issue and commit

then, provide us with a description of how to clone your application and reproduce the issue.

Thanks :)

[passalini]

Hi @samphippen

I just added the project in the issue description.
I added the project to the circleci too.

I hope that it helps!

[fables-tales]

@passalini are you able to reproduce this without Devise?

[passalini]

@samphippen without devise the mock works. You can see it on this build.

[jamesdabbs-procore]

I believe this is actually an rspec-mocks issue. See rspec/rspec-mocks#1275 for a PR.