require 'spec_helper'

describe RepositoryForkWorker do
  describe 'modules' do
    it 'includes ProjectImportOptions' do
      expect(described_class).to include_module(ProjectImportOptions)
    end
  end

  describe "#perform" do
    let(:project) { create(:project, :repository) }
    let(:shell) { Gitlab::Shell.new }
    let(:fork_project) { create(:project, :repository, :import_scheduled, forked_from_project: project) }

    shared_examples 'RepositoryForkWorker performing' do
      before do
        allow(subject).to receive(:gitlab_shell).and_return(shell)
      end

      def expect_fork_repository
        expect(shell).to receive(:fork_repository).with(
          'default',
          project.disk_path,
          fork_project.repository_storage,
          fork_project.disk_path
        )
      end

      describe 'when a worker was reset without cleanup' do
        let(:jid) { '12345678' }

        it 'creates a new repository from a fork' do
          allow(subject).to receive(:jid).and_return(jid)

          expect_fork_repository.and_return(true)

          perform!
        end
      end

      it "creates a new repository from a fork" do
        expect_fork_repository.and_return(true)

        perform!
      end

      it 'protects the default branch' do
        expect_fork_repository.and_return(true)

        perform!

        expect(fork_project.protected_branches.first.name).to eq(fork_project.default_branch)
      end

      it 'flushes various caches' do
        expect_fork_repository.and_return(true)

        expect_any_instance_of(Repository).to receive(:expire_emptiness_caches)
          .and_call_original

        expect_any_instance_of(Repository).to receive(:expire_exists_cache)
          .and_call_original

        perform!
      end

      it "handles bad fork" do
        error_message = "Unable to fork project #{fork_project.id} for repository #{project.disk_path} -> #{fork_project.disk_path}"

        expect_fork_repository.and_return(false)

        expect { perform! }.to raise_error(StandardError, error_message)
      end
    end

    context 'only project ID passed' do
      def perform!
        subject.perform(fork_project.id)
      end

      it_behaves_like 'RepositoryForkWorker performing'
    end

    context 'project ID, storage and repo paths passed' do
      def perform!
        subject.perform(fork_project.id, TestEnv.repos_path, project.disk_path)
      end

      it_behaves_like 'RepositoryForkWorker performing'

      it 'logs a message about forking with old-style arguments' do
        allow(Rails.logger).to receive(:info).with(anything) # To compensate for other logs
        expect(Rails.logger).to receive(:info).with("Project #{fork_project.id} is being forked using old-style arguments.")

        perform!
      end
    end
  end
end