gitlab-org--gitlab-foss/spec/tasks/gitlab/db_rake_spec.rb

require 'spec_helper'
require 'rake'

describe 'gitlab:db namespace rake task' do
  before :all do
    Rake.application.rake_require 'active_record/railties/databases'
    Rake.application.rake_require 'tasks/seed_fu'
    Rake.application.rake_require 'tasks/gitlab/db'

    # empty task as env is already loaded
    Rake::Task.define_task :environment
  end

  before do
    # Stub out db tasks
    allow(Rake::Task['db:migrate']).to receive(:invoke).and_return(true)
    allow(Rake::Task['db:schema:load']).to receive(:invoke).and_return(true)
    allow(Rake::Task['db:seed_fu']).to receive(:invoke).and_return(true)
  end

  describe 'configure' do
    it 'invokes db:migrate when schema has already been loaded' do
      allow(ActiveRecord::Base.connection).to receive(:tables).and_return(%w[table1 table2])
      expect(Rake::Task['db:migrate']).to receive(:invoke)
      expect(Rake::Task['db:schema:load']).not_to receive(:invoke)
      expect(Rake::Task['db:seed_fu']).not_to receive(:invoke)
      expect { run_rake_task('gitlab:db:configure') }.not_to raise_error
    end

    it 'invokes db:shema:load and db:seed_fu when schema is not loaded' do
      allow(ActiveRecord::Base.connection).to receive(:tables).and_return([])
      expect(Rake::Task['db:schema:load']).to receive(:invoke)
      expect(Rake::Task['db:seed_fu']).to receive(:invoke)
      expect(Rake::Task['db:migrate']).not_to receive(:invoke)
      expect { run_rake_task('gitlab:db:configure') }.not_to raise_error
    end

    it 'invokes db:shema:load and db:seed_fu when there is only a single table present' do
      allow(ActiveRecord::Base.connection).to receive(:tables).and_return(['default'])
      expect(Rake::Task['db:schema:load']).to receive(:invoke)
      expect(Rake::Task['db:seed_fu']).to receive(:invoke)
      expect(Rake::Task['db:migrate']).not_to receive(:invoke)
      expect { run_rake_task('gitlab:db:configure') }.not_to raise_error
    end

    it 'does not invoke any other rake tasks during an error' do
      allow(ActiveRecord::Base).to receive(:connection).and_raise(RuntimeError, 'error')
      expect(Rake::Task['db:migrate']).not_to receive(:invoke)
      expect(Rake::Task['db:schema:load']).not_to receive(:invoke)
      expect(Rake::Task['db:seed_fu']).not_to receive(:invoke)
      expect { run_rake_task('gitlab:db:configure') }.to raise_error(RuntimeError, 'error')
      # unstub connection so that the database cleaner still works
      allow(ActiveRecord::Base).to receive(:connection).and_call_original
    end

    it 'does not invoke seed after a failed schema_load' do
      allow(ActiveRecord::Base.connection).to receive(:tables).and_return([])
      allow(Rake::Task['db:schema:load']).to receive(:invoke).and_raise(RuntimeError, 'error')
      expect(Rake::Task['db:schema:load']).to receive(:invoke)
      expect(Rake::Task['db:seed_fu']).not_to receive(:invoke)
      expect(Rake::Task['db:migrate']).not_to receive(:invoke)
      expect { run_rake_task('gitlab:db:configure') }.to raise_error(RuntimeError, 'error')
    end

    context 'SKIP_POST_DEPLOYMENT_MIGRATIONS environment variable set' do
      let :migrations_paths do
        root = Rails::Paths::Root.new(Rails.root)
        root.add('db/migrate')
      end

      before do
        allow(ENV).to receive(:[]).and_call_original
        allow(ENV).to receive(:[]).with('SKIP_POST_DEPLOYMENT_MIGRATIONS').and_return true

        # Our environment has already been loaded, so we need to pretent like post_migrations were not
        allow(Rails.application.config.paths).to receive(:[]).and_call_original
        allow(Rails.application.config.paths).to receive(:[]).with('db/migrate').and_return(migrations_paths)
        allow(ActiveRecord::Migrator).to receive(:migrations_paths).and_return(migrations_paths)
      end

      it 'adds post deployment migrations before schema load if the schema is not already loaded' do
        allow(ActiveRecord::Base.connection).to receive(:tables).and_return([])
        expect(Gitlab::Database).to receive(:add_post_migrate_path_to_rails)
        expect(Rake::Task['db:schema:load']).to receive(:invoke)
        expect(Rake::Task['db:seed_fu']).to receive(:invoke)
        expect(Rake::Task['db:migrate']).not_to receive(:invoke)
        expect(Rails.application.config.paths).to receive(:[]).with('db/migrate')
        expect { run_rake_task('gitlab:db:configure') }.not_to raise_error

        expect(migrations_paths.include?(File.join(Rails.root, 'db', 'post_migrate'))).to be(true)
      end
    end
  end

  def run_rake_task(task_name)
    Rake::Task[task_name].reenable
    Rake.application.invoke_task task_name
  end
end