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# frozen_string_literal: true
require 'spec_helper'
require_migration!
RSpec.describe BackfillTotalTupleCountForBatchedMigrations, :migration, schema: 20210406140057,
feature_category: :database do
let!(:table_name) { 'projects' }
let!(:migrations) { table(:batched_background_migrations) }
let!(:migration) do
migrations.create!(
created_at: Time.now,
updated_at: Time.now,
min_value: 1,
max_value: 10_000,
batch_size: 1_000,
sub_batch_size: 100,
interval: 120,
status: 0,
job_class_name: 'Foo',
table_name: table_name,
column_name: :id,
total_tuple_count: nil
)
end
describe '#up' do
before do
expect(Gitlab::Database::PgClass).to receive(:for_table).with(table_name).and_return(estimate)
end
let(:estimate) { double('estimate', cardinality_estimate: 42) }
it 'updates total_tuple_count attribute' do
migrate!
migrations.all.each do |migration|
expect(migration.total_tuple_count).to eq(estimate.cardinality_estimate)
end
end
end
end
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