describe Champs::DossierLinkChamp, type: :model do describe 'prefilling validations' do describe 'value' do subject { described_class.new(value:, dossier: build(:dossier)).valid?(:prefill) } context 'when nil' do let(:value) { nil } it { expect(subject).to eq(true) } end context 'when empty' do let(:value) { '' } it { expect(subject).to eq(true) } end context 'when an integer' do let(:value) { 42 } it { expect(subject).to eq(true) } end context 'when a string representing an integer' do let(:value) { "42" } it { expect(subject).to eq(true) } end context 'when it can be casted as integer' do let(:value) { 'totoro' } it { expect(subject).to eq(false) } end end end end