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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe ExperimentSubject, type: :model do
describe 'associations' do
it { is_expected.to belong_to(:experiment) }
it { is_expected.to belong_to(:user) }
it { is_expected.to belong_to(:group) }
it { is_expected.to belong_to(:project) }
end
describe 'validations' do
it { is_expected.to validate_presence_of(:experiment) }
describe 'must_have_one_subject_present' do
let(:experiment_subject) { build(:experiment_subject, user: nil, group: nil, project: nil) }
let(:error_message) { 'Must have exactly one of User, Group, or Project.' }
it 'fails when no subject is present' do
expect(experiment_subject).not_to be_valid
expect(experiment_subject.errors[:base]).to include(error_message)
end
it 'passes when user subject is present' do
experiment_subject.user = build(:user)
expect(experiment_subject).to be_valid
end
it 'passes when group subject is present' do
experiment_subject.group = build(:group)
expect(experiment_subject).to be_valid
end
it 'passes when project subject is present' do
experiment_subject.project = build(:project)
expect(experiment_subject).to be_valid
end
it 'fails when more than one subject is present', :aggregate_failures do
# two subjects
experiment_subject.user = build(:user)
experiment_subject.group = build(:group)
expect(experiment_subject).not_to be_valid
expect(experiment_subject.errors[:base]).to include(error_message)
# three subjects
experiment_subject.project = build(:project)
expect(experiment_subject).not_to be_valid
expect(experiment_subject.errors[:base]).to include(error_message)
end
end
end
end
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