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# frozen_string_literal: true
require 'spec_helper'
require 'rubocop'
require 'rubocop/rspec/support'
require_relative '../../../../rubocop/cop/migration/add_reference'
describe RuboCop::Cop::Migration::AddReference do
include CopHelper
let(:cop) { described_class.new }
context 'outside of a migration' do
it 'does not register any offenses' do
expect_no_offenses(<<~RUBY)
def up
add_reference(:projects, :users)
end
RUBY
end
end
context 'in a migration' do
before do
allow(cop).to receive(:in_migration?).and_return(true)
end
let(:offense) { '`add_reference` requires downtime for existing tables, use `add_concurrent_foreign_key` instead. When used for new tables, `index: true` or `index: { options... } is required.`' }
context 'when the table existed before' do
it 'registers an offense when using add_reference' do
expect_offense(<<~RUBY)
def up
add_reference(:projects, :users)
^^^^^^^^^^^^^ #{offense}
end
RUBY
end
it 'registers an offense when using add_reference with index enabled' do
expect_offense(<<~RUBY)
def up
add_reference(:projects, :users, index: true)
^^^^^^^^^^^^^ #{offense}
end
RUBY
end
it 'registers an offense if only a different table was created' do
expect_offense(<<~RUBY)
def up
create_table(:foo) do |t|
t.string :name
end
add_reference(:projects, :users, index: true)
^^^^^^^^^^^^^ #{offense}
end
RUBY
end
end
context 'when creating the table at the same time' do
let(:create_table_statement) do
<<~RUBY
create_table(:projects) do |t|
t.string :name
end
RUBY
end
it 'registers an offense when using add_reference without index' do
expect_offense(<<~RUBY)
def up
#{create_table_statement}
add_reference(:projects, :users)
^^^^^^^^^^^^^ #{offense}
end
RUBY
end
it 'registers an offense when using add_reference index disabled' do
expect_offense(<<~RUBY)
def up
#{create_table_statement}
add_reference(:projects, :users, index: false)
^^^^^^^^^^^^^ #{offense}
end
RUBY
end
it 'does not register an offense when using add_reference with index enabled' do
expect_no_offenses(<<~RUBY)
def up
#{create_table_statement}
add_reference(:projects, :users, index: true)
end
RUBY
end
it 'does not register an offense when the index is unique' do
expect_no_offenses(<<~RUBY)
def up
#{create_table_statement}
add_reference(:projects, :users, index: { unique: true } )
end
RUBY
end
end
end
end
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