gitlab-org--gitlab-foss/spec/lib/gitlab/utils/batch_loader_spec.rb

83 lines
2.6 KiB
Ruby

# frozen_string_literal: true
require 'fast_spec_helper'
require 'batch-loader'
RSpec.describe Gitlab::Utils::BatchLoader do
let(:stubbed_loader) do
double( # rubocop:disable RSpec/VerifiedDoubles
'Loader',
load_lazy_method: [],
load_lazy_method_same_batch_key: [],
load_lazy_method_other_batch_key: []
)
end
let(:test_module) do
Module.new do
def self.lazy_method(id)
BatchLoader.for(id).batch(key: :my_batch_name) do |ids, loader|
stubbed_loader.load_lazy_method(ids)
ids.each { |id| loader.call(id, id) }
end
end
def self.lazy_method_same_batch_key(id)
BatchLoader.for(id).batch(key: :my_batch_name) do |ids, loader|
stubbed_loader.load_lazy_method_same_batch_key(ids)
ids.each { |id| loader.call(id, id) }
end
end
def self.lazy_method_other_batch_key(id)
BatchLoader.for(id).batch(key: :other_batch_name) do |ids, loader|
stubbed_loader.load_lazy_method_other_batch_key(ids)
ids.each { |id| loader.call(id, id) }
end
end
end
end
before do
BatchLoader::Executor.clear_current
allow(test_module).to receive(:stubbed_loader).and_return(stubbed_loader)
end
describe '.clear_key' do
it 'clears batched items which match the specified batch key' do
test_module.lazy_method(1)
test_module.lazy_method_same_batch_key(2)
test_module.lazy_method_other_batch_key(3)
described_class.clear_key(:my_batch_name)
test_module.lazy_method(4).to_i
test_module.lazy_method_same_batch_key(5).to_i
test_module.lazy_method_other_batch_key(6).to_i
expect(stubbed_loader).to have_received(:load_lazy_method).with([4])
expect(stubbed_loader).to have_received(:load_lazy_method_same_batch_key).with([5])
expect(stubbed_loader).to have_received(:load_lazy_method_other_batch_key).with([3, 6])
end
it 'clears loaded values which match the specified batch key' do
test_module.lazy_method(1).to_i
test_module.lazy_method_same_batch_key(2).to_i
test_module.lazy_method_other_batch_key(3).to_i
described_class.clear_key(:my_batch_name)
test_module.lazy_method(1).to_i
test_module.lazy_method_same_batch_key(2).to_i
test_module.lazy_method_other_batch_key(3).to_i
expect(stubbed_loader).to have_received(:load_lazy_method).with([1]).twice
expect(stubbed_loader).to have_received(:load_lazy_method_same_batch_key).with([2]).twice
expect(stubbed_loader).to have_received(:load_lazy_method_other_batch_key).with([3])
end
end
end