debian-mirror-gitlab/spec/models/concerns/each_batch_spec.rb

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# frozen_string_literal: true
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require 'spec_helper'
describe EachBatch do
describe '.each_batch' do
let(:model) do
Class.new(ActiveRecord::Base) do
include EachBatch
self.table_name = 'users'
end
end
before do
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create_list(:user, 5, updated_at: 1.day.ago)
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end
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shared_examples 'each_batch handling' do |kwargs|
it 'yields an ActiveRecord::Relation when a block is given' do
model.each_batch(kwargs) do |relation|
expect(relation).to be_a_kind_of(ActiveRecord::Relation)
end
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end
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it 'yields a batch index as the second argument' do
model.each_batch(kwargs) do |_, index|
expect(index).to eq(1)
end
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end
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it 'accepts a custom batch size' do
amount = 0
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model.each_batch(kwargs.merge({ of: 1 })) { amount += 1 }
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expect(amount).to eq(5)
end
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it 'does not include ORDER BYs in the yielded relations' do
model.each_batch do |relation|
expect(relation.to_sql).not_to include('ORDER BY')
end
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end
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it 'allows updating of the yielded relations' do
time = Time.now
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model.each_batch do |relation|
relation.update_all(updated_at: time)
end
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expect(model.where(updated_at: time).count).to eq(5)
end
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end
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it_behaves_like 'each_batch handling', {}
it_behaves_like 'each_batch handling', { order_hint: :updated_at }
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end
end