Update and simplify Import controller specs

spec/controllers/import/bitbucket_controller_spec.rb

 require 'spec_helper'
+require_relative 'import_spec_helper'
 
 describe Import::BitbucketController do
+  include ImportSpecHelper
+
   let(:user) { create(:user, bitbucket_access_token: 'asd123', bitbucket_access_token_secret: "sekret") }
 
   before do
     sign_in(user)
-    controller.stub(:bitbucket_import_enabled?).and_return(true)
+    allow(controller).to receive(:bitbucket_import_enabled?).and_return(true)
   end
 
   describe "GET callback" do
     before do
       session[:oauth_request_token] = {}
     end
-    
+
     it "updates access token" do
       token = "asdasd12345"
       secret = "sekrettt"
       access_token = double(token: token, secret: secret)
-      Gitlab::BitbucketImport::Client.any_instance.stub(:get_token).and_return(access_token)
-      Gitlab.config.omniauth.providers << OpenStruct.new(app_id: "asd123", app_secret: "asd123", name: "bitbucket")
+      allow_any_instance_of(Gitlab::BitbucketImport::Client).
+        to receive(:get_token).and_return(access_token)
+      stub_omniauth_provider('bitbucket')
 
       get :callback
 
@@ -35,7 +39,7 @@ describe Import::BitbucketController do
 
     it "assigns variables" do
       @project = create(:project, import_type: 'bitbucket', creator_id: user.id)
-      controller.stub_chain(:client, :projects).and_return([@repo])
+      stub_client(projects: [@repo])
 
       get :status
 
@@ -45,7 +49,7 @@ describe Import::BitbucketController do
 
     it "does not show already added project" do
       @project = create(:project, import_type: 'bitbucket', creator_id: user.id, import_source: 'asd/vim')
-      controller.stub_chain(:client, :projects).and_return([@repo])
+      stub_client(projects: [@repo])
 
       get :status
 
@@ -77,8 +81,7 @@ describe Import::BitbucketController do
         to receive(:new).with(bitbucket_repo, user).
         and_return(double(execute: true))
 
-      controller.stub_chain(:client, :user).and_return(bitbucket_user)
-      controller.stub_chain(:client, :project).and_return(bitbucket_repo)
+      stub_client(user: bitbucket_user, project: bitbucket_repo)
     end
 
     context "when the repository owner is the Bitbucket user" do

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, github_access_token: 'asd123') }
 
   before do
     sign_in(user)
-    controller.stub(:github_import_enabled?).and_return(true)
+    allow(controller).to receive(:github_import_enabled?).and_return(true)
   end
 
   describe "GET callback" do
@@ -13,9 +16,7 @@ describe Import::GithubController do
       token = "asdasd12345"
       allow_any_instance_of(Gitlab::GithubImport::Client).
         to receive(:get_token).and_return(token)
-      Gitlab.config.omniauth.providers << OpenStruct.new(app_id: 'asd123',
-                                                         app_secret: 'asd123',
-                                                         name: 'github')
+      stub_omniauth_provider('github')
 
       get :callback
 
@@ -33,9 +34,7 @@ describe Import::GithubController do
 
     it "assigns variables" do
       @project = create(:project, import_type: 'github', creator_id: user.id)
-      controller.stub_chain(:client, :repos).and_return([@repo])
-      controller.stub_chain(:client, :orgs).and_return([@org])
-      controller.stub_chain(:client, :org_repos).with(@org.login).and_return([@org_repo])
+      stub_client(repos: [@repo], orgs: [@org], org_repos: [@org_repo])
 
       get :status
 
@@ -45,8 +44,7 @@ describe Import::GithubController do
 
     it "does not show already added project" do
       @project = create(:project, import_type: 'github', creator_id: user.id, import_source: 'asd/vim')
-      controller.stub_chain(:client, :repos).and_return([@repo])
-      controller.stub_chain(:client, :orgs).and_return([])
+      stub_client(repos: [@repo], orgs: [])
 
       get :status
 
@@ -67,8 +65,7 @@ describe Import::GithubController do
     }
 
     before do
-      controller.stub_chain(:client, :user).and_return(github_user)
-      controller.stub_chain(:client, :repo).and_return(github_repo)
+      stub_client(user: github_user, repo: github_repo)
     end
 
     context "when the repository owner is the GitHub user" do

spec/controllers/import/gitlab_controller_spec.rb

 require 'spec_helper'
+require_relative 'import_spec_helper'
 
 describe Import::GitlabController do
+  include ImportSpecHelper
+
   let(:user) { create(:user, gitlab_access_token: 'asd123') }
 
   before do
     sign_in(user)
-    controller.stub(:gitlab_import_enabled?).and_return(true)
+    allow(controller).to receive(:gitlab_import_enabled?).and_return(true)
   end
 
   describe "GET callback" do
     it "updates access token" do
       token = "asdasd12345"
-      Gitlab::GitlabImport::Client.any_instance.stub_chain(:client, :auth_code, :get_token, :token).and_return(token)
-      Gitlab.config.omniauth.providers << OpenStruct.new(app_id: "asd123", app_secret: "asd123", name: "gitlab")
+      allow_any_instance_of(Gitlab::GitlabImport::Client).
+        to receive(:get_token).and_return(token)
+      stub_omniauth_provider('gitlab')
 
       get :callback
 
@@ -28,7 +32,7 @@ describe Import::GitlabController do
 
     it "assigns variables" do
       @project = create(:project, import_type: 'gitlab', creator_id: user.id)
-      controller.stub_chain(:client, :projects).and_return([@repo])
+      stub_client(projects: [@repo])
 
       get :status
 
@@ -38,7 +42,7 @@ describe Import::GitlabController do
 
     it "does not show already added project" do
       @project = create(:project, import_type: 'gitlab', creator_id: user.id, import_source: 'asd/vim')
-      controller.stub_chain(:client, :projects).and_return([@repo])
+      stub_client(projects: [@repo])
 
       get :status
 
@@ -66,8 +70,7 @@ describe Import::GitlabController do
     }
 
     before do
-      controller.stub_chain(:client, :user).and_return(gitlab_user)
-      controller.stub_chain(:client, :project).and_return(gitlab_repo)
+      stub_client(user: gitlab_user, project: gitlab_repo)
     end
 
     context "when the repository owner is the GitLab.com user" do

spec/controllers/import/gitorious_controller_spec.rb

 require 'spec_helper'
+require_relative 'import_spec_helper'
 
 describe Import::GitoriousController do
+  include ImportSpecHelper
+
   let(:user) { create(:user) }
 
   before do
@@ -30,7 +33,7 @@ describe Import::GitoriousController do
 
     it "assigns variables" do
       @project = create(:project, import_type: 'gitorious', creator_id: user.id)
-      controller.stub_chain(:client, :repos).and_return([@repo])
+      stub_client(repos: [@repo])
 
       get :status
 
@@ -40,7 +43,7 @@ describe Import::GitoriousController do
 
     it "does not show already added project" do
       @project = create(:project, import_type: 'gitorious', creator_id: user.id, import_source: 'asd/vim')
-      controller.stub_chain(:client, :repos).and_return([@repo])
+      stub_client(repos: [@repo])
 
       get :status
 
@@ -59,7 +62,7 @@ describe Import::GitoriousController do
       expect(Gitlab::GitoriousImport::ProjectCreator).
         to receive(:new).with(@repo, namespace, user).
         and_return(double(execute: true))
-      controller.stub_chain(:client, :repo).and_return(@repo)
+      stub_client(repo: @repo)
 
       post :create, format: :js
     end

spec/controllers/import/google_code_controller_spec.rb

 require 'spec_helper'
+require_relative 'import_spec_helper'
 
 describe Import::GoogleCodeController do
+  include ImportSpecHelper
+
   let(:user) { create(:user) }
   let(:dump_file) { fixture_file_upload(Rails.root + 'spec/fixtures/GoogleCodeProjectHosting.json', 'application/json') }
 
@@ -21,13 +24,12 @@ describe Import::GoogleCodeController do
   describe "GET status" do
     before do
       @repo = OpenStruct.new(name: 'vim')
-      controller.stub_chain(:client, :valid?).and_return(true)
+      stub_client(valid?: true)
     end
 
     it "assigns variables" do
       @project = create(:project, import_type: 'google_code', creator_id: user.id)
-      controller.stub_chain(:client, :repos).and_return([@repo])
-      controller.stub_chain(:client, :incompatible_repos).and_return([])
+      stub_client(repos: [@repo], incompatible_repos: [])
 
       get :status
 
@@ -38,8 +40,7 @@ describe Import::GoogleCodeController do
 
     it "does not show already added project" do
       @project = create(:project, import_type: 'google_code', creator_id: user.id, import_source: 'vim')
-      controller.stub_chain(:client, :repos).and_return([@repo])
-      controller.stub_chain(:client, :incompatible_repos).and_return([])
+      stub_client(repos: [@repo], incompatible_repos: [])
 
       get :status
 
@@ -48,8 +49,7 @@ describe Import::GoogleCodeController do
     end
 
     it "does not show any invalid projects" do
-      controller.stub_chain(:client, :repos).and_return([])
-      controller.stub_chain(:client, :incompatible_repos).and_return([@repo])
+      stub_client(repos: [], incompatible_repos: [@repo])
 
       get :status
 

spec/controllers/import/import_spec_helper.rb

+require 'ostruct'
+
+# Helper methods for controller specs in the Import namespace
+#
+# Must be included manually.
+module ImportSpecHelper
+  # Stub `controller` to return a null object double with the provided messages
+  # when `client` is called
+  #
+  # Examples:
+  #
+  #   stub_client(foo: %w(foo))
+  #
+  #   controller.client.foo         # => ["foo"]
+  #   controller.client.bar.baz.foo # => ["foo"]
+  #
+  # Returns the client double
+  def stub_client(messages = {})
+    client = double('client', messages).as_null_object
+    allow(controller).to receive(:client).and_return(client)
+
+    client
+  end
+
+  def stub_omniauth_provider(name)
+    provider = OpenStruct.new(
+      name: name,
+      app_id: 'asd123',
+      app_secret: 'asd123'
+    )
+    Gitlab.config.omniauth.providers << provider
+  end
+end