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# frozen_string_literal: true
require 'spec_helper'
require 'rails/generators/testing/behaviour'
require 'rails/generators/testing/assertions'
RSpec.describe BatchedBackgroundMigration::BatchedBackgroundMigrationGenerator, feature_category: :database do
include Rails::Generators::Testing::Behaviour
include Rails::Generators::Testing::Assertions
include FileUtils
tests described_class
destination File.expand_path('tmp', __dir__)
before do
prepare_destination
end
after do
rm_rf(destination_root)
end
context 'with valid arguments' do
let(:expected_migration_file) { load_expected_file('queue_my_batched_migration.txt') }
let(:expected_migration_spec_file) { load_expected_file('queue_my_batched_migration_spec.txt') }
let(:expected_migration_job_file) { load_expected_file('my_batched_migration.txt') }
let(:expected_migration_job_spec_file) { load_expected_file('my_batched_migration_spec_matcher.txt') }
let(:expected_migration_dictionary) { load_expected_file('my_batched_migration_dictionary.txt') }
it 'generates expected files' do
run_generator %w[my_batched_migration --table_name=projects --column_name=id --feature_category=database]
assert_migration('db/post_migrate/queue_my_batched_migration.rb') do |migration_file|
expect(migration_file).to eq(expected_migration_file)
end
assert_migration('spec/migrations/queue_my_batched_migration_spec.rb') do |migration_spec_file|
expect(migration_spec_file).to eq(expected_migration_spec_file)
end
assert_file('lib/gitlab/background_migration/my_batched_migration.rb') do |migration_job_file|
expect(migration_job_file).to eq(expected_migration_job_file)
end
assert_file('spec/lib/gitlab/background_migration/my_batched_migration_spec.rb') do |migration_job_spec_file|
# Regex is used to match the dynamic schema: <version> in the specs
expect(migration_job_spec_file).to match(/#{expected_migration_job_spec_file}/)
end
assert_file('db/docs/batched_background_migrations/my_batched_migration.yml') do |migration_dictionary|
expect(migration_dictionary).to eq(expected_migration_dictionary)
end
end
end
context 'without required arguments' do
it 'throws table_name is required error' do
expect do
run_generator %w[my_batched_migration]
end.to raise_error(ArgumentError, 'table_name is required')
end
it 'throws column_name is required error' do
expect do
run_generator %w[my_batched_migration --table_name=projects]
end.to raise_error(ArgumentError, 'column_name is required')
end
it 'throws feature_category is required error' do
expect do
run_generator %w[my_batched_migration --table_name=projects --column_name=id]
end.to raise_error(ArgumentError, 'feature_category is required')
end
end
private
def load_expected_file(file_name)
File.read(File.expand_path("expected_files/#{file_name}", __dir__))
end
end
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