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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe LooseForeignKey do
let(:project_klass) do
Class.new(ApplicationRecord) do
include LooseForeignKey
self.table_name = 'projects'
loose_foreign_key :issues, :project_id, on_delete: :async_delete
loose_foreign_key 'merge_requests', 'project_id', 'on_delete' => 'async_nullify'
end
end
it 'exposes the loose foreign key definitions' do
definitions = project_klass.loose_foreign_key_definitions
tables = definitions.map(&:to_table)
expect(tables).to eq(%w[issues merge_requests])
end
it 'casts strings to symbol' do
definition = project_klass.loose_foreign_key_definitions.last
expect(definition.from_table).to eq('projects')
expect(definition.to_table).to eq('merge_requests')
expect(definition.column).to eq('project_id')
expect(definition.on_delete).to eq(:async_nullify)
end
context 'validation' do
context 'on_delete validation' do
let(:invalid_class) do
Class.new(ApplicationRecord) do
include LooseForeignKey
self.table_name = 'projects'
loose_foreign_key :issues, :project_id, on_delete: :async_delete
loose_foreign_key :merge_requests, :project_id, on_delete: :async_nullify
loose_foreign_key :merge_requests, :project_id, on_delete: :destroy
end
end
it 'raises error when invalid `on_delete` option was given' do
expect { invalid_class }.to raise_error /Invalid on_delete option given: destroy/
end
end
context 'inheritance validation' do
let(:inherited_project_class) do
Class.new(Project) do
include LooseForeignKey
loose_foreign_key :issues, :project_id, on_delete: :async_delete
end
end
it 'raises error when loose_foreign_key is defined in a child ActiveRecord model' do
expect { inherited_project_class }.to raise_error /Please define the loose_foreign_key on the Project class/
end
end
end
end
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