/spec/controllers/import/github_controller_spec.rb

require 'spec_helper'
require_relative 'import_spec_helper'

describe Import::GithubController do
  include ImportSpecHelper

  let(:user) { create(:user) }
  let(:token) { "asdasd12345" }
  let(:access_params) { { github_access_token: token } }

  def assign_session_token
    session[:github_access_token] = token
  end

  before do
    sign_in(user)
    allow(controller).to receive(:github_import_enabled?).and_return(true)
  end

  describe "GET callback" do
    it "updates access token" do
      token = "asdasd12345"
      allow_any_instance_of(Gitlab::GithubImport::Client).
        to receive(:get_token).and_return(token)
      allow_any_instance_of(Gitlab::GithubImport::Client).
        to receive(:github_options).and_return({})
      stub_omniauth_provider('github')

      get :callback

      expect(session[:github_access_token]).to eq(token)
      expect(controller).to redirect_to(status_import_github_url)
    end
  end

  describe "GET status" do
    before do
      @repo = OpenStruct.new(login: 'vim', full_name: 'asd/vim')
      @org = OpenStruct.new(login: 'company')
      @org_repo = OpenStruct.new(login: 'company', full_name: 'company/repo')
      assign_session_token
    end

    it "assigns variables" do
      @project = create(:project, import_type: 'github', creator_id: user.id)
      stub_client(repos: [@repo, @org_repo], orgs: [@org], org_repos: [@org_repo])

      get :status

      expect(assigns(:already_added_projects)).to eq([@project])
      expect(assigns(:repos)).to eq([@repo, @org_repo])
    end

    it "does not show already added project" do
      @project = create(:project, import_type: 'github', creator_id: user.id, import_source: 'asd/vim')
      stub_client(repos: [@repo], orgs: [])

      get :status

      expect(assigns(:already_added_projects)).to eq([@project])
      expect(assigns(:repos)).to eq([])
    end
  end

  describe "POST create" do
    let(:github_username) { user.username }
    let(:github_user) { OpenStruct.new(login: github_username) }
    let(:github_repo) do
      OpenStruct.new(
        name: 'vim',
        full_name: "#{github_username}/vim",
        owner: OpenStruct.new(login: github_username)
      )
    end

    before do
      stub_client(user: github_user, repo: github_repo)
      assign_session_token
    end

    context "when the repository owner is the GitHub user" do
      context "when the GitHub user and GitLab user's usernames match" do
        it "takes the current user's namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).with(github_repo, user.namespace, user, access_params).
            and_return(double(execute: true))

          post :create, format: :js
        end
      end

      context "when the GitHub user and GitLab user's usernames don't match" do
        let(:github_username) { "someone_else" }

        it "takes the current user's namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).with(github_repo, user.namespace, user, access_params).
            and_return(double(execute: true))

          post :create, format: :js
        end
      end
    end

    context "when the repository owner is not the GitHub user" do
      let(:other_username) { "someone_else" }

      before do
        github_repo.owner = OpenStruct.new(login: other_username)
        assign_session_token
      end

      context "when a namespace with the GitHub user's username already exists" do
        let!(:existing_namespace) { create(:namespace, name: other_username, owner: user) }

        context "when the namespace is owned by the GitLab user" do
          it "takes the existing namespace" do
            expect(Gitlab::GithubImport::ProjectCreator).
              to receive(:new).with(github_repo, existing_namespace, user, access_params).
              and_return(double(execute: true))

            post :create, format: :js
          end
        end

        context "when the namespace is not owned by the GitLab user" do
          before do
            existing_namespace.owner = create(:user)
            existing_namespace.save
          end

          it "doesn't create a project" do
            expect(Gitlab::GithubImport::ProjectCreator).
              not_to receive(:new)

            post :create, format: :js
          end
        end
      end

      context "when a namespace with the GitHub user's username doesn't exist" do
        it "creates the namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).and_return(double(execute: true))

          post :create, format: :js

          expect(Namespace.where(name: other_username).first).not_to be_nil
        end

        it "takes the new namespace" do
          expect(Gitlab::GithubImport::ProjectCreator).
            to receive(:new).with(github_repo, an_instance_of(Group), user, access_params).
            and_return(double(execute: true))

          post :create, format: :js
        end
      end
    end
  end
end