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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::Migrations::BatchedMigrationLastId, feature_category: :pipeline_insights do
subject(:test_sampling) { described_class.new(connection, base_dir) }
let(:base_dir) { Pathname.new(Dir.mktmpdir) }
let(:file_name) { 'last-batched-background-migration-id.txt' }
let(:file_path) { base_dir.join(file_name) }
let(:file_contents) { nil }
where(:base_model) do
[
[ApplicationRecord], [Ci::ApplicationRecord]
]
end
with_them do
let(:connection) { base_model.connection }
after do
FileUtils.rm_rf(file_path)
end
describe '#read' do
before do
File.write(file_path, file_contents)
end
context 'when the file exists and have content' do
let(:file_contents) { 99 }
it { expect(test_sampling.read).to eq(file_contents) }
end
context 'when the file exists and is blank' do
it { expect(test_sampling.read).to be_nil }
end
context "when the file doesn't exists" do
before do
FileUtils.rm_rf(file_path)
end
it { expect(test_sampling.read).to be_nil }
end
end
describe '#store' do
let(:file_contents) { File.read(file_path) }
let(:migration) do
Gitlab::Database::SharedModel.using_connection(connection) do
create(:batched_background_migration)
end
end
it 'creates the file properly' do
test_sampling.store
expect(File).to exist(file_path)
end
it 'stores the proper id in the file' do
migration
test_sampling.store
expect(file_contents).to eq(migration.id.to_s)
end
end
end
end
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