I am trying to test my polymorphic association but I cant seem to get it to pass
Model:
class Foo < ApplicationRecord
belongs_to :bar, polymorphic: true, optional: true
end
Now my test looks like
RSpec.describe Foo, type: :model do
subject { build(:foo) }
it { is_expected.to belong_to(:bar) }
end
The error that I am getting
Foo
is expected to belong to bar required: true (FAILED - 1)
Failures:
> 1) Foo is expected to belong to bar required: true
> Failure/Error: it { is_expected.to belong_to(:bar) }
> Expected Foo to have a belongs_to association called bar (and for the record to fail validation if :bar is unset; i.e., either the
> association should have been defined with `required: true`, or there
> should be a presence validation on :bar)
> /# ./spec/models/foo_spec.rb:4:in `block (2 levels) in <top (required)>'
Now this association can be a nil value
The issue seems to be:
and for the record to fail validation if :bar is unset;
Since, you have optional: true - this part is not satisfied.
It looks like shoulda assumes a relation should be required, unless you tell it otherwise.
Try modifying this matcher like so
it { is_expected.to belong_to(:bar).optional }