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# frozen_string_literal: true
require "spec_helper"
describe GraphQL::Dataloader::ActiveRecordAssociationSource do
if testing_rails?
class VulfpeckSchema < GraphQL::Schema
class Album < GraphQL::Schema::Object
field :name, String
end
class Band < GraphQL::Schema::Object
field :albums, [Album] do
argument :genre, String, required: false
argument :reverse, Boolean, required: false, default_value: false
argument :unscoped, Boolean, required: false, default_value: false
end
def albums(genre: nil, reverse:, unscoped:)
if unscoped
scope = nil
else
scope = ::Album
if genre
scope = scope.where(band_genre: genre)
end
scope = if reverse
scope.order(name: :desc)
else
scope.order(:name)
end
end
dataload_association(:albums, scope: scope)
end
end
class Query < GraphQL::Schema::Object
field :band, Band do
argument :name, String
end
def band(name:)
::Band.find_by(name: name)
end
end
query(Query)
use GraphQL::Dataloader
end
it "works with different scopes on the same object at runtime" do
query_str = <<~GRAPHQL
{
band(name: "Vulfpeck") {
allAlbums: albums {
name
}
unscopedAlbums: albums(unscoped: true) {
name
}
reverseAlbums: albums(reverse: true) {
name
}
countryAlbums: albums(genre: "country") {
name
}
}
}
GRAPHQL
result = VulfpeckSchema.execute(query_str)
assert_equal ["Mit Peck", "My First Car"], result["data"]["band"]["allAlbums"].map { |a| a["name"] }
assert_equal ["Mit Peck", "My First Car"], result["data"]["band"]["unscopedAlbums"].map { |a| a["name"] }
assert_equal ["My First Car", "Mit Peck"], result["data"]["band"]["reverseAlbums"].map { |a| a["name"] }
assert_equal [], result["data"]["band"]["countryAlbums"]
end
it_dataloads "queries for associated records when the association isn't already loaded" do |d|
my_first_car = ::Album.find(2)
homey = ::Album.find(4)
log = with_active_record_log(colorize: false) do
vulfpeck, chon = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :band).load_all([my_first_car, homey])
assert_equal "Vulfpeck", vulfpeck.name
assert_equal "Chon", chon.name
end
assert_includes log, '[["id", 1], ["id", 3]]'
toms_story = ::Album.find(3)
log = with_active_record_log(colorize: false) do
vulfpeck, chon, toms_story_band = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :band).load_all([my_first_car, homey, toms_story])
assert_equal "Vulfpeck", vulfpeck.name
assert_equal "Chon", chon.name
assert_equal "Tom's Story", toms_story_band.name
end
assert_includes log, '[["id", 2]]'
end
it_dataloads "doesn't load records that are already cached by ActiveRecordSource" do |d|
d.with(GraphQL::Dataloader::ActiveRecordSource, Band).load_all([1,2,3])
my_first_car = ::Album.find(2)
homey = ::Album.find(4)
toms_story = ::Album.find(3)
log = with_active_record_log(colorize: false) do
vulfpeck, chon, toms_story_band = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :band).load_all([my_first_car, homey, toms_story])
assert_equal "Vulfpeck", vulfpeck.name
assert_equal "Chon", chon.name
assert_equal "Tom's Story", toms_story_band.name
end
assert_equal "", log
end
it_dataloads "warms the cache for ActiveRecordSource" do |d|
my_first_car = ::Album.find(2)
homey = ::Album.find(4)
toms_story = ::Album.find(3)
d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :band).load_all([my_first_car, homey, toms_story])
log = with_active_record_log(colorize: false) do
d.with(GraphQL::Dataloader::ActiveRecordSource, Band).load_all([1,2,3])
end
assert_equal "", log
end
it_dataloads "doesn't warm the cache when a scope is given" do |d|
my_first_car = ::Album.find(2)
homey = ::Album.find(4)
summerteeth = ::Album.find(6)
results = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :band, ::Band.country).load_all([my_first_car, homey, summerteeth])
assert_equal [nil, nil, ::Band.find(4)], results
log = with_active_record_log(colorize: false) do
d.with(GraphQL::Dataloader::ActiveRecordSource, Band).load_all([1,2,4])
end
assert_includes log, "SELECT \"bands\".* FROM \"bands\" WHERE \"bands\".\"id\" IN (?, ?, ?) [[\"id\", 1], [\"id\", 2], [\"id\", 4]]"
end
it_dataloads "doesn't pause when the association is already loaded" do |d|
source = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :band)
assert_equal 0, source.results.size
assert_equal 0, source.pending.size
my_first_car = ::Album.find(2)
vulfpeck = my_first_car.band
vulfpeck2 = source.load(my_first_car)
assert_equal vulfpeck, vulfpeck2
assert_equal 0, source.results.size
assert_equal 0, source.pending.size
my_first_car.reload
vulfpeck3 = source.load(my_first_car)
assert_equal vulfpeck, vulfpeck3
assert_equal 1, source.results.size
assert_equal 0, source.pending.size
end
it_dataloads "raises an error with a non-existent association" do |d|
my_first_car = ::Album.find(2)
source = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :tour_bus)
assert_raises ActiveRecord::AssociationNotFoundError do
source.load(my_first_car)
end
end
it_dataloads "works with polymorphic associations" do |d|
wilco = ::Band.find(4)
vulfpeck = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :thing).load(wilco)
assert_equal ::Band.find(1), vulfpeck
end
it_dataloads "works with collection associations" do |d|
wilco = ::Band.find(4)
chon = ::Band.find(3)
albums_by_band = nil
log = with_active_record_log(colorize: false) do
albums_by_band = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :albums).load_all([wilco, chon])
end
assert_equal [[6], [4, 5]], albums_by_band.map { |al| al.map(&:id) }
assert_includes log, 'SELECT "albums".* FROM "albums" WHERE "albums"."band_id" IN (?, ?) [["band_id", 4], ["band_id", 3]]'
albums = nil
log = with_active_record_log(colorize: false) do
albums = d.with(GraphQL::Dataloader::ActiveRecordSource, Album).load_all([3,4,5,6])
end
assert_equal [3,4,5,6], albums.map(&:id)
assert_includes log, 'WHERE "albums"."id" = ? [["id", 3]]'
end
it_dataloads "works with collection associations with scope" do |d|
wilco = ::Band.find(4)
chon = ::Band.find(3)
albums_by_band = nil
one_month_ago = nil
log = with_active_record_log(colorize: false) do
one_month_ago = 1.month.ago.end_of_day
albums_by_band_1 = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :albums, Album.where("created_at >= ?", one_month_ago)).request(wilco)
albums_by_band_2 = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :albums, Album.where("created_at >= ?", one_month_ago)).request(chon)
albums_by_band_3 = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :albums, Album.where("created_at <= ?", one_month_ago)).request(wilco)
albums_by_band = [albums_by_band_1.load, albums_by_band_2.load, albums_by_band_3.load]
end
assert_equal [[6], [4, 5], []], albums_by_band.map { |al| al.map(&:id) }
expected_log = if Rails::VERSION::STRING > "8"
'SELECT "albums".* FROM "albums" WHERE (created_at >= ?) AND "albums"."band_id" IN (?, ?)'
else
'SELECT "albums".* FROM "albums" WHERE (created_at >= ' + one_month_ago.utc.strftime("'%Y-%m-%d %H:%M:%S.%6N'") + ') AND "albums"."band_id" IN (?, ?)'
end
assert_includes log, expected_log
albums = nil
log = with_active_record_log(colorize: false) do
albums = d.with(GraphQL::Dataloader::ActiveRecordSource, Album).load_all([3,4,5,6])
end
assert_equal [3,4,5,6], albums.map(&:id)
assert_includes log, 'WHERE "albums"."id" IN (?, ?, ?, ?) [["id", 3], ["id", 4], ["id", 5], ["id", 6]]'
end
if Rails::VERSION::STRING > "7.1" # not supported in <7.1
it_dataloads "loads with composite primary keys and warms the cache" do |d|
my_first_car = ::Album.find(2)
homey = ::Album.find(4)
log = with_active_record_log(colorize: false) do
vulfpeck, chon = d.with(GraphQL::Dataloader::ActiveRecordAssociationSource, :composite_band).load_all([my_first_car, homey])
assert_equal "Vulfpeck", vulfpeck.name
assert_equal "Chon", chon.name
end
assert_includes log, '[["name", "Vulfpeck"], ["name", "Chon"], ["genre", 0]]'
log = with_active_record_log(colorize: false) do
d.with(GraphQL::Dataloader::ActiveRecordSource, CompositeBand).load_all([["Vulfpeck", "rock"], ["Chon", :rock]])
end
assert_equal "", log
end
end
end
end
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