Shoulda-matchers are not seen by rails/rspec - ruby-on-rails

Question

Rails 4.2.4, Rspec 3.3.1, shoulda-matchers 3.0.0.
I am getting
#...
358) Participant validations
Failure/Error: it { should ensure_length_of(:coresp_country).is_at_most(255) }
NoMethodError:
undefined method `ensure_length_of' for #<RSpec::ExampleGroups::Participant::Validations:0x0000000f40aec0>
# ./spec/models/participant_spec.rb:100:in `block (3 levels) in <top (required)>'
359) Participant validations company
Failure/Error: it { should ensure_length_of(:company).is_at_most(255) }
NoMethodError:
undefined method `ensure_length_of' for #<RSpec::ExampleGroups::Participant::Validations::Company:0x0000000f414ab0>
# ./spec/models/participant_spec.rb:149:in `block (4 levels) in <top (required)>'
360) Participant validations company declared_type = COMPANY
Failure/Error: it { should validate_presence_of(:company) }
NoMethodError:
undefined method `validate_presence_of' for #<RSpec::ExampleGroups::Participant::Validations::Company::DeclaredTypeCOMPANY:0x0000000f429c58>
#...
And many more failures of this kind (looks like shoulda-matchers do not work).
rails_helper.rb:
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
require 'spec_helper'
require 'rspec/rails'
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
Rails.logger.level = 4
ActiveRecord::Migration.maintain_test_schema!
RSpec.configure do |config|
config.use_transactional_fixtures = true
config.infer_spec_type_from_file_location!
config.include FactoryGirl::Syntax::Methods
config.include Sorcery::TestHelpers::Rails
config.include Macros::Controller::Security
end
FactoryGirl.reload
Shoulda::Matchers.configure do |config|
config.integrate do |with|
with.test_framework :rspec
with.library :rails
end
end
spec_helper.rb:
require 'simplecov_helper'
require 'webmock/rspec'
WebMock.disable_net_connect!(allow_localhost: true)
require 'rspec/collection_matchers'
RSpec.configure do |config|
config.expect_with :rspec do |expectations|
expectations.include_chain_clauses_in_custom_matcher_descriptions = true
end
config.mock_with :rspec do |mocks|
mocks.verify_partial_doubles = true
end
config.filter_run :focus
config.run_all_when_everything_filtered = true
config.disable_monkey_patching!
config.expose_dsl_globally = true
config.default_formatter = 'doc' if config.files_to_run.one?
config.order = :random
Kernel.srand config.seed
end
EDIT
Ok, I think the issue is not with shoulda-matchers, but with active_attr gem, because tests only fails in spec/compositions/api folder, where I use the gem.

Answer 1

shoulda-matchers 3.0 selectively makes its matchers available. I am using ActiveModel matchers which are only mixed into model specs (af98a23).
I had two options to solve the issue:
placing the specs of the models, which use active_attr gem under spec/models folder;
adding type: :model to the top-level describe block for each class in spec/compositions/api folder.
I decided to go with second option and it worked.
Sidenote
Now matchers, which starts with ensure (ensure_inclusion_in, ensure_length_of) are renamed to validate_inclusion_in, validate_length_of (55c8d09).