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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe BulkInsertableAssociations do
before do
stub_const('BulkFoo', Class.new(ApplicationRecord))
stub_const('BulkBar', Class.new(ApplicationRecord))
stub_const('SimpleBar', Class.new(ApplicationRecord))
stub_const('BulkParent', Class.new(ApplicationRecord))
BulkFoo.class_eval do
include BulkInsertSafe
self.table_name = '_test_bulk_foos'
validates :name, presence: true
end
BulkBar.class_eval do
include BulkInsertSafe
self.table_name = '_test_bulk_bars'
end
SimpleBar.class_eval do
self.table_name = '_test_simple_bars'
end
BulkParent.class_eval do
include BulkInsertableAssociations
self.table_name = '_test_bulk_parents'
has_many :bulk_foos, class_name: 'BulkFoo'
has_many :bulk_hunks, class_name: 'BulkFoo'
has_many :bulk_bars, class_name: 'BulkBar'
has_many :simple_bars, class_name: 'SimpleBar' # not `BulkInsertSafe`
has_one :bulk_foo # not supported
end
end
before(:all) do
ActiveRecord::Schema.define do
create_table :_test_bulk_parents, force: true do |t|
t.string :name, null: true
end
create_table :_test_bulk_foos, force: true do |t|
t.string :name, null: true
t.belongs_to :bulk_parent, null: false
end
create_table :_test_bulk_bars, force: true do |t|
t.string :name, null: true
t.belongs_to :bulk_parent, null: false
end
create_table :_test_simple_bars, force: true do |t|
t.string :name, null: true
t.belongs_to :bulk_parent, null: false
end
end
end
after(:all) do
ActiveRecord::Schema.define do
drop_table :_test_bulk_foos, force: true
drop_table :_test_bulk_bars, force: true
drop_table :_test_simple_bars, force: true
drop_table :_test_bulk_parents, force: true
end
end
context 'saving bulk insertable associations' do
let(:parent) { BulkParent.new(name: 'parent') }
context 'when items already have IDs' do
it 'stores nothing and raises an error' do
build_items(parent: parent) { |n, item| item.id = n }
expect { save_with_bulk_inserts(parent) }.to raise_error(BulkInsertSafe::PrimaryKeySetError)
expect(BulkFoo.count).to eq(0)
end
end
context 'when items have no IDs set' do
it 'stores them all and updates items with IDs' do
items = build_items(parent: parent)
expect(BulkFoo).to receive(:bulk_insert!).once.and_call_original
expect { save_with_bulk_inserts(parent) }.to change { BulkFoo.count }.from(0).to(items.size)
expect(parent.bulk_foos.pluck(:id)).to all(be_a Integer)
end
end
context 'when items are empty' do
it 'does nothing' do
expect(parent.bulk_foos).to be_empty
expect { save_with_bulk_inserts(parent) }.not_to change { BulkFoo.count }
end
end
context 'when relation name does not match class name' do
it 'stores them all' do
items = build_items(parent: parent, relation: :bulk_hunks)
expect(BulkFoo).to receive(:bulk_insert!).once.and_call_original
expect { save_with_bulk_inserts(parent) }.to(
change { BulkFoo.count }.from(0).to(items.size)
)
end
end
context 'with multiple threads' do
it 'isolates bulk insert behavior between threads' do
total_item_count = 10
parent1 = BulkParent.new(name: 'parent1')
parent2 = BulkParent.new(name: 'parent2')
build_items(parent: parent1, count: total_item_count / 2)
build_items(parent: parent2, count: total_item_count / 2)
expect(BulkFoo).to receive(:bulk_insert!).once.and_call_original
[
Thread.new do
save_with_bulk_inserts(parent1)
end,
Thread.new do
parent2.save!
end
].map(&:join)
expect(BulkFoo.count).to eq(total_item_count)
end
end
context 'with multiple associations' do
it 'isolates writes between associations' do
items1 = build_items(parent: parent, relation: :bulk_foos)
items2 = build_items(parent: parent, relation: :bulk_bars)
expect(BulkFoo).to receive(:bulk_insert!).once.and_call_original
expect(BulkBar).to receive(:bulk_insert!).once.and_call_original
expect { save_with_bulk_inserts(parent) }.to(
change { BulkFoo.count }.from(0).to(items1.size)
.and(
change { BulkBar.count }.from(0).to(items2.size)
))
end
end
context 'passing bulk insert arguments' do
it 'disables validations on target association' do
items = build_items(parent: parent)
expect(BulkFoo).to receive(:bulk_insert!).with(items, validate: false).and_return true
save_with_bulk_inserts(parent)
end
end
it 'can disable bulk-inserts within a bulk-insert block' do
parent1 = BulkParent.new(name: 'parent1')
parent2 = BulkParent.new(name: 'parent2')
_items1 = build_items(parent: parent1)
items2 = build_items(parent: parent2)
expect(BulkFoo).to receive(:bulk_insert!).once.with(items2, validate: false)
BulkInsertableAssociations.with_bulk_insert(enabled: true) do
BulkInsertableAssociations.with_bulk_insert(enabled: false) do
parent1.save!
end
parent2.save!
end
end
context 'when association is not bulk-insert safe' do
it 'saves it normally' do
parent.simple_bars.build
expect(SimpleBar).not_to receive(:bulk_insert!)
expect { save_with_bulk_inserts(parent) }.to change { SimpleBar.count }.from(0).to(1)
end
end
context 'when association is not has_many' do
it 'saves it normally' do
parent.bulk_foo = BulkFoo.new(name: 'item')
expect(BulkFoo).not_to receive(:bulk_insert!)
expect { save_with_bulk_inserts(parent) }.to change { BulkFoo.count }.from(0).to(1)
end
end
context 'when an item is not valid' do
describe '.save' do
it 'invalidates the parent and returns false' do
build_invalid_items(parent: parent)
expect(BulkInsertableAssociations.with_bulk_insert { parent.save }).to be false # rubocop:disable Rails/SaveBang
expect(parent.errors[:bulk_foos].size).to eq(1)
expect(BulkFoo.count).to eq(0)
expect(BulkParent.count).to eq(0)
end
end
describe '.save!' do
it 'invalidates the parent and raises error' do
build_invalid_items(parent: parent)
expect { save_with_bulk_inserts(parent) }.to raise_error(ActiveRecord::RecordInvalid)
expect(parent.errors[:bulk_foos].size).to eq(1)
expect(BulkFoo.count).to eq(0)
expect(BulkParent.count).to eq(0)
end
end
end
end
private
def save_with_bulk_inserts(entity)
BulkInsertableAssociations.with_bulk_insert { entity.save! }
end
def build_items(parent:, relation: :bulk_foos, count: 10)
count.times do |n|
item = parent.send(relation).build(name: "item_#{n}", bulk_parent_id: parent.id)
yield(n, item) if block_given?
end
parent.send(relation)
end
def build_invalid_items(parent:)
build_items(parent: parent).tap do |items|
invalid_item = items.first
invalid_item.name = nil
expect(invalid_item).not_to be_valid
end
end
end
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