111 lines
3.1 KiB
Ruby
111 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Gitlab::Database::DynamicModelHelpers do
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let(:including_class) { Class.new.include(described_class) }
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let(:table_name) { 'projects' }
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describe '#define_batchable_model' do
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subject { including_class.new.define_batchable_model(table_name) }
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it 'is an ActiveRecord model' do
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expect(subject.ancestors).to include(ActiveRecord::Base)
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end
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it 'includes EachBatch' do
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expect(subject.included_modules).to include(EachBatch)
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end
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it 'has the correct table name' do
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expect(subject.table_name).to eq(table_name)
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end
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it 'has the inheritance type column disable' do
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expect(subject.inheritance_column).to eq('_type_disabled')
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end
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end
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describe '#each_batch' do
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subject { including_class.new }
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before do
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create_list(:project, 2)
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end
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context 'when no transaction is open' do
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before do
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allow(subject).to receive(:transaction_open?).and_return(false)
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end
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it 'iterates table in batches' do
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each_batch_size = ->(&block) do
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subject.each_batch(table_name, of: 1) do |batch|
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block.call(batch.size)
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end
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end
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expect { |b| each_batch_size.call(&b) }
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.to yield_successive_args(1, 1)
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end
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end
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context 'when transaction is open' do
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before do
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allow(subject).to receive(:transaction_open?).and_return(true)
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end
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it 'raises an error' do
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expect { subject.each_batch(table_name, of: 1) { |batch| batch.size } }
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.to raise_error(RuntimeError, /each_batch should not run inside a transaction/)
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end
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end
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end
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describe '#each_batch_range' do
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subject { including_class.new }
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let(:first_project) { create(:project) }
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let(:second_project) { create(:project) }
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context 'when no transaction is open' do
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before do
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allow(subject).to receive(:transaction_open?).and_return(false)
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end
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it 'iterates table in batch ranges' do
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expect { |b| subject.each_batch_range(table_name, of: 1, &b) }
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.to yield_successive_args(
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[first_project.id, first_project.id],
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[second_project.id, second_project.id]
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)
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end
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it 'yields only one batch if bigger than the table size' do
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expect { |b| subject.each_batch_range(table_name, of: 2, &b) }
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.to yield_successive_args([first_project.id, second_project.id])
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end
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it 'makes it possible to apply a scope' do
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each_batch_limited = ->(&b) do
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subject.each_batch_range(table_name, scope: ->(table) { table.limit(1) }, of: 1, &b)
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end
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expect { |b| each_batch_limited.call(&b) }
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.to yield_successive_args([first_project.id, first_project.id])
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end
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end
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context 'when transaction is open' do
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before do
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allow(subject).to receive(:transaction_open?).and_return(true)
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end
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it 'raises an error' do
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expect { subject.each_batch_range(table_name, of: 1) { 1 } }
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.to raise_error(RuntimeError, /each_batch should not run inside a transaction/)
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end
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end
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end
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end
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