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Diffstat (limited to 'spec/models/concerns/manual_inverse_association_spec.rb')
-rw-r--r-- | spec/models/concerns/manual_inverse_association_spec.rb | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/spec/models/concerns/manual_inverse_association_spec.rb b/spec/models/concerns/manual_inverse_association_spec.rb new file mode 100644 index 00000000000..aad40883854 --- /dev/null +++ b/spec/models/concerns/manual_inverse_association_spec.rb @@ -0,0 +1,51 @@ +require 'spec_helper' + +describe ManualInverseAssociation do + let(:model) do + Class.new(MergeRequest) do + belongs_to :manual_association, class_name: 'MergeRequestDiff', foreign_key: :latest_merge_request_diff_id + manual_inverse_association :manual_association, :merge_request + end + end + + before do + stub_const("#{described_class}::Model", model) + end + + let(:instance) { create(:merge_request).becomes(model) } + + describe '.manual_inverse_association' do + context 'when the relation exists' do + before do + instance.create_merge_request_diff + instance.reload + end + + it 'loads the relation' do + expect(instance.manual_association).to be_an_instance_of(MergeRequestDiff) + end + + it 'does not perform extra queries after loading' do + instance.manual_association + + expect { instance.manual_association.merge_request } + .not_to exceed_query_limit(0) + end + + it 'passes arguments to the default association method, to allow reloading' do + query_count = ActiveRecord::QueryRecorder.new do + instance.manual_association + instance.manual_association(true) + end.count + + expect(query_count).to eq(2) + end + end + + context 'when the relation does not return a value' do + it 'does not try to set an inverse' do + expect(instance.manual_association).to be_nil + end + end + end +end |