54 lines
1.4 KiB
Ruby
54 lines
1.4 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Preloaders::LabelsPreloader do
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let_it_be(:user) { create(:user) }
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shared_examples 'an efficient database query' do
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let(:subscriptions) { labels.each { |l| create(:subscription, subscribable: l, project: l.project, user: user) } }
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it 'does not make n+1 queries' do
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first_label = labels_with_preloaded_data.first
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clean_labels = labels_with_preloaded_data
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expect { access_data(clean_labels) }.to issue_same_number_of_queries_as { access_data([first_label]) }
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end
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end
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context 'project labels' do
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let_it_be(:projects) { create_list(:project, 3, :public, :repository) }
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let_it_be(:labels) { projects.each { |p| create(:label, project: p) } }
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it_behaves_like 'an efficient database query'
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end
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context 'group labels' do
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let_it_be(:groups) { create_list(:group, 3) }
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let_it_be(:labels) { groups.each { |g| create(:group_label, group: g) } }
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it_behaves_like 'an efficient database query'
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end
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private
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def labels_with_preloaded_data
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l = Label.where(id: labels.map(&:id))
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described_class.new(l, user).preload_all
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l
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end
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def access_data(labels)
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labels.each do |label|
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case label
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when ProjectLabel
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label.project.project_feature
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label.lazy_subscription(user, label.project)
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when GroupLabel
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label.group.route
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label.lazy_subscription(user)
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end
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end
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end
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end
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