Replace project redirects spinach tests with RSpec analog

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036

features/project/redirects.feature

-Feature: Project Redirects
-  Background:
-    Given public project "Community"
-    And private project "Enterprise"
-
-  Scenario: I visit public project page
-    When I visit project "Community" page
-    Then I should see project "Community" home page
-
-  Scenario: I visit private project page
-    When I visit project "Enterprise" page
-    Then I should be redirected to sign in page
-
-  Scenario: I visit a non-existent project page
-    When I visit project "CommunityDoesNotExist" page
-    Then I should be redirected to sign in page
-
-  Scenario: I visit a non-existent project page as user
-    Given I sign in as a user
-    When I visit project "CommunityDoesNotExist" page
-    Then page status code should be 404
-
-  Scenario: I visit unauthorized project page as user
-    Given I sign in as a user
-    When I visit project "Enterprise" page
-    Then page status code should be 404
-
-  Scenario: I visit a public project without signing in
-    When I visit project "Community" page
-    And I should see project "Community" home page
-    And I click on "Sign In"
-    And Authenticate
-    Then I should be redirected to "Community" page
-
-  Scenario: I visit private project page without signing in
-    When I visit project "Enterprise" page
-    And I get redirected to signin page where I sign in
-    Then I should be redirected to "Enterprise" page

features/steps/project/redirects.rb

-class Spinach::Features::ProjectRedirects < Spinach::FeatureSteps
-  include SharedAuthentication
-  include SharedPaths
-  include SharedProject
-
-  step 'public project "Community"' do
-    create(:project, :public, name: 'Community')
-  end
-
-  step 'private project "Enterprise"' do
-    create(:project, :private, name: 'Enterprise')
-  end
-
-  step 'I visit project "Community" page' do
-    project = Project.find_by(name: 'Community')
-    visit project_path(project)
-  end
-
-  step 'I should see project "Community" home page' do
-    Gitlab.config.gitlab.should_receive(:host).and_return("www.example.com")
-    page.within '.breadcrumbs .breadcrumb-item-text' do
-      expect(page).to have_content 'Community'
-    end
-  end
-
-  step 'I visit project "Enterprise" page' do
-    project = Project.find_by(name: 'Enterprise')
-    visit project_path(project)
-  end
-
-  step 'I visit project "CommunityDoesNotExist" page' do
-    project = Project.find_by(name: 'Community')
-    visit project_path(project) + 'DoesNotExist'
-  end
-
-  step 'I click on "Sign In"' do
-    first(:link, "Sign in").click
-  end
-
-  step 'Authenticate' do
-    admin = create(:admin)
-    fill_in "user_login", with: admin.email
-    fill_in "user_password", with: admin.password
-    click_button "Sign in"
-    Thread.current[:current_user] = admin
-  end
-
-  step 'I should be redirected to "Community" page' do
-    project = Project.find_by(name: 'Community')
-    expect(current_path).to eq "/#{project.full_path}"
-    expect(status_code).to eq 200
-  end
-
-  step 'I get redirected to signin page where I sign in' do
-    admin = create(:admin)
-    fill_in "user_login", with: admin.email
-    fill_in "user_password", with: admin.password
-    click_button "Sign in"
-    Thread.current[:current_user] = admin
-  end
-
-  step 'I should be redirected to "Enterprise" page' do
-    project = Project.find_by(name: 'Enterprise')
-    expect(current_path).to eq "/#{project.full_path}"
-    expect(status_code).to eq 200
-  end
-end

spec/features/projects/redirects_spec.rb

+require 'spec_helper'
+
+describe 'Project redirects' do
+  let(:user) { create :user }
+  let(:public_project) { create :project, :public }
+  let(:private_project) { create :project, :private }
+
+  before do
+    allow(Gitlab.config.gitlab).to receive(:host).and_return('www.example.com')
+  end
+
+  it 'shows public project page' do
+    visit project_path(public_project)
+
+    page.within '.breadcrumbs .breadcrumb-item-text' do
+      expect(page).to have_content(public_project.name)
+    end
+  end
+
+  it 'redirects to sign in page when project is private' do
+    visit project_path(private_project)
+
+    expect(current_path).to eq(new_user_session_path)
+  end
+
+  it 'redirects to sign in page when project does not exist' do
+    visit project_path(build(:project, :public))
+
+    expect(current_path).to eq(new_user_session_path)
+  end
+
+  it 'redirects to public project page after signing in' do
+    visit project_path(public_project)
+
+    first(:link, 'Sign in').click
+
+    fill_in 'user_login',    with: user.email
+    fill_in 'user_password', with: user.password
+    click_button 'Sign in'
+
+    expect(status_code).to eq(200)
+    expect(current_path).to eq("/#{public_project.full_path}")
+  end
+
+  it 'redirects to private project page after sign in' do
+    visit project_path(private_project)
+
+    owner = private_project.owner
+    fill_in 'user_login',    with: owner.email
+    fill_in 'user_password', with: owner.password
+    click_button 'Sign in'
+
+    expect(status_code).to eq(200)
+    expect(current_path).to eq("/#{private_project.full_path}")
+  end
+
+  context 'when signed in' do
+    before do
+      sign_in(user)
+    end
+
+    it 'returns 404 status when project does not exist' do
+      visit project_path(build(:project, :public))
+
+      expect(status_code).to eq(404)
+    end
+
+    it 'returns 404 when project is private' do
+      visit project_path(private_project)
+
+      expect(status_code).to eq(404)
+    end
+  end
+end