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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::BackgroundMigration::BatchedMigration, type: :model do
it_behaves_like 'having unique enum values'
describe 'associations' do
it { is_expected.to have_many(:batched_jobs).with_foreign_key(:batched_background_migration_id) }
describe '#last_job' do
let!(:batched_migration) { create(:batched_background_migration) }
let!(:batched_job1) { create(:batched_background_migration_job, batched_migration: batched_migration) }
let!(:batched_job2) { create(:batched_background_migration_job, batched_migration: batched_migration) }
it 'returns the most recent (in order of id) batched job' do
expect(batched_migration.last_job).to eq(batched_job2)
end
end
end
describe '.queue_order' do
let!(:migration1) { create(:batched_background_migration) }
let!(:migration2) { create(:batched_background_migration) }
let!(:migration3) { create(:batched_background_migration) }
it 'returns batched migrations ordered by their id' do
expect(described_class.queue_order.all).to eq([migration1, migration2, migration3])
end
end
describe '.active_migration' do
let!(:migration1) { create(:batched_background_migration, :finished) }
let!(:migration2) { create(:batched_background_migration, :active) }
let!(:migration3) { create(:batched_background_migration, :active) }
it 'returns the first active migration according to queue order' do
expect(described_class.active_migration).to eq(migration2)
end
end
describe '#interval_elapsed?' do
context 'when the migration has no last_job' do
let(:batched_migration) { build(:batched_background_migration) }
it 'returns true' do
expect(batched_migration.interval_elapsed?).to eq(true)
end
end
context 'when the migration has a last_job' do
let(:interval) { 2.minutes }
let(:batched_migration) { create(:batched_background_migration, interval: interval) }
context 'when the last_job is less than an interval old' do
it 'returns false' do
freeze_time do
create(:batched_background_migration_job,
batched_migration: batched_migration,
created_at: Time.current - 1.minute)
expect(batched_migration.interval_elapsed?).to eq(false)
end
end
end
context 'when the last_job is exactly an interval old' do
it 'returns true' do
freeze_time do
create(:batched_background_migration_job,
batched_migration: batched_migration,
created_at: Time.current - 2.minutes)
expect(batched_migration.interval_elapsed?).to eq(true)
end
end
end
context 'when the last_job is more than an interval old' do
it 'returns true' do
freeze_time do
create(:batched_background_migration_job,
batched_migration: batched_migration,
created_at: Time.current - 3.minutes)
expect(batched_migration.interval_elapsed?).to eq(true)
end
end
end
context 'when an interval variance is given' do
let(:variance) { 2.seconds }
context 'when the last job is less than an interval with variance old' do
it 'returns false' do
freeze_time do
create(:batched_background_migration_job,
batched_migration: batched_migration,
created_at: Time.current - 1.minute - 57.seconds)
expect(batched_migration.interval_elapsed?(variance: variance)).to eq(false)
end
end
end
context 'when the last job is more than an interval with variance old' do
it 'returns true' do
freeze_time do
create(:batched_background_migration_job,
batched_migration: batched_migration,
created_at: Time.current - 1.minute - 58.seconds)
expect(batched_migration.interval_elapsed?(variance: variance)).to eq(true)
end
end
end
end
end
end
describe '#create_batched_job!' do
let(:batched_migration) { create(:batched_background_migration) }
it 'creates a batched_job with the correct batch configuration' do
batched_job = batched_migration.create_batched_job!(1, 5)
expect(batched_job).to have_attributes(
min_value: 1,
max_value: 5,
batch_size: batched_migration.batch_size,
sub_batch_size: batched_migration.sub_batch_size)
end
end
describe '#next_min_value' do
let!(:batched_migration) { create(:batched_background_migration) }
context 'when a previous job exists' do
let!(:batched_job) { create(:batched_background_migration_job, batched_migration: batched_migration) }
it 'returns the next value after the previous maximum' do
expect(batched_migration.next_min_value).to eq(batched_job.max_value + 1)
end
end
context 'when a previous job does not exist' do
it 'returns the migration minimum value' do
expect(batched_migration.next_min_value).to eq(batched_migration.min_value)
end
end
end
describe '#job_class' do
let(:job_class) { Gitlab::BackgroundMigration::CopyColumnUsingBackgroundMigrationJob }
let(:batched_migration) { build(:batched_background_migration) }
it 'returns the class of the job for the migration' do
expect(batched_migration.job_class).to eq(job_class)
end
end
describe '#batch_class' do
let(:batch_class) { Gitlab::BackgroundMigration::BatchingStrategies::PrimaryKeyBatchingStrategy}
let(:batched_migration) { build(:batched_background_migration) }
it 'returns the class of the batch strategy for the migration' do
expect(batched_migration.batch_class).to eq(batch_class)
end
end
shared_examples_for 'an attr_writer that demodulizes assigned class names' do |attribute_name|
let(:batched_migration) { build(:batched_background_migration) }
context 'when a module name exists' do
it 'removes the module name' do
batched_migration.public_send(:"#{attribute_name}=", '::Foo::Bar')
expect(batched_migration[attribute_name]).to eq('Bar')
end
end
context 'when a module name does not exist' do
it 'does not change the given class name' do
batched_migration.public_send(:"#{attribute_name}=", 'Bar')
expect(batched_migration[attribute_name]).to eq('Bar')
end
end
end
describe '#job_class_name=' do
it_behaves_like 'an attr_writer that demodulizes assigned class names', :job_class_name
end
describe '#batch_class_name=' do
it_behaves_like 'an attr_writer that demodulizes assigned class names', :batch_class_name
end
describe '#prometheus_labels' do
let(:batched_migration) { create(:batched_background_migration, job_class_name: 'TestMigration', table_name: 'foo', column_name: 'bar') }
it 'returns a hash with labels for the migration' do
labels = {
migration_id: batched_migration.id,
migration_identifier: 'TestMigration/foo.bar'
}
expect(batched_migration.prometheus_labels).to eq(labels)
end
end
end
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