定義漏れの外部キーを自動検知する
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# frozen_string_literal: true | |
RSpec.describe 'ActiveRecord foreign key' do | |
let(:connection) { ActiveRecord::Base.connection } | |
let(:tables) { connection.tables } | |
def foreign_key_exists?(reflection, foreign_keys) | |
to_table_name = reflection.klass.table_name | |
reflection.foreign_key | |
foreign_keys.any? do |foreign_key| | |
foreign_key.to_table == to_table_name && foreign_key.column == reflection.foreign_key | |
end | |
end | |
# テスト対象外にするテーブル一覧 | |
# [table_names, ...] | |
let(:ignored_tables) do | |
%w[] | |
end | |
it 'detects missing foreign keys' do | |
missing_reflections = [] | |
(tables - ignored_tables).each do |table_name| | |
foreign_keys = connection.foreign_keys(table_name) | |
class_name = table_name.singularize.classify | |
klass = class_name.constantize | |
reflections = klass.reflect_on_all_associations(:belongs_to) | |
reflections.reject!(&:polymorphic?) | |
reflections.each do |reflection| | |
next if foreign_key_exists?(reflection, foreign_keys) | |
missing_reflections.push( | |
[table_name, reflection] | |
) | |
end | |
end | |
expect(missing_reflections).to be_empty, -> { | |
missing_keys = missing_reflections.map do |(table_name, reflection)| | |
"add_foreign_key(:#{table_name}, :#{reflection.klass.table_name})" | |
end | |
<<~EOS | |
Not found foreigin key. | |
#{missing_keys.join("\n")} | |
EOS | |
} | |
end | |
end |
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