Tweak some factories to support stubbing

- Use `association()` instead of `create()` in association blocks,
  to avoid enforcing the builder strategy.
- Pass on `project` in association blocks instead of `after` callbacks.
- Add `has_internal_id` trait to generate IIDs on stubbed models.
- Add `ProjectWiki#id` accessor.
- Rename `discussion_note_on_snippet` to `*_project_snippet`, for
  consistency with the `note_*` factories.
- Add `#sha` on stubbed commits in `RepoHelpers`.

app/models/project_wiki.rb

@@ -39,6 +39,7 @@ class ProjectWiki
   def full_path
     @project.full_path + '.wiki'
   end
+  alias_method :id, :full_path
 
   # @deprecated use full_path when you need it for an URL route or disk_path when you want to point to the filesystem
   alias_method :path_with_namespace, :full_path

ee/spec/factories/epics.rb

 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :epic do
+  factory :epic, traits: [:has_internal_id] do
     title { generate(:title) }
     group
     author

ee/spec/factories/notes.rb

@@ -3,19 +3,19 @@
 FactoryBot.modify do
   factory :note do
     trait :on_epic do
-      noteable { create(:epic) }
+      noteable { association(:epic) }
       project { nil }
     end
 
     trait :on_vulnerability do
-      noteable { create(:vulnerability) }
+      noteable { association(:vulnerability, project: project) }
     end
 
     trait :on_design do
       transient do
-        issue { create(:issue, project: project) }
+        issue { association(:issue, project: project) }
       end
-      noteable { create(:design, :with_file, issue: issue) }
+      noteable { association(:design, :with_file, issue: issue) }
 
       after(:build) do |note|
         next if note.project == note.noteable.project

ee/spec/features/epics/epic_issues_spec.rb

@@ -27,9 +27,11 @@ describe 'Epic Issues', :js do
     ]
   end
 
-  def visit_epic
+  before do
     stub_licensed_features(epics: true, subepics: true)
+  end
 
+  def visit_epic
     sign_in(user)
     visit group_epic_path(group, epic)
 

spec/factories/ci/builds.rb

@@ -29,6 +29,7 @@ FactoryBot.define do
     end
 
     pipeline factory: :ci_pipeline
+    project { pipeline.project }
 
     trait :degenerated do
       options { nil }
@@ -220,10 +221,6 @@ FactoryBot.define do
       end
     end
 
-    after(:build) do |build, evaluator|
-      build.project ||= build.pipeline.project
-    end
-
     trait :with_deployment do
       after(:build) do |build, evaluator|
         ##

spec/factories/internal_ids.rb

@@ -6,4 +6,10 @@ FactoryBot.define do
     usage { :issues }
     last_value { project.issues.maximum(:iid) || 0 }
   end
+
+  trait :has_internal_id do
+    after(:stub) do |record|
+      record.iid ||= generate(:iid)
+    end
+  end
 end

spec/factories/issues.rb

 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :issue do
+  factory :issue, traits: [:has_internal_id] do
     title { generate(:title) }
     project
     author { project.creator }

spec/factories/merge_requests.rb

 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :merge_request do
+  factory :merge_request, traits: [:has_internal_id] do
     title { generate(:title) }
     association :source_project, :repository, factory: :project
     target_project { source_project }

spec/factories/milestones.rb

 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :milestone do
+  factory :milestone, traits: [:has_internal_id] do
     title
 
     transient do

spec/factories/notes.rb

@@ -40,7 +40,7 @@ FactoryBot.define do
 
     factory :discussion_note_on_personal_snippet, traits: [:on_personal_snippet], class: 'DiscussionNote'
 
-    factory :discussion_note_on_snippet, traits: [:on_snippet], class: 'DiscussionNote'
+    factory :discussion_note_on_project_snippet, traits: [:on_project_snippet], class: 'DiscussionNote'
 
     factory :legacy_diff_note_on_commit, traits: [:on_commit, :legacy_diff_note], class: 'LegacyDiffNote'
 
@@ -120,23 +120,19 @@ FactoryBot.define do
     end
 
     trait :on_issue do
-      noteable { create(:issue, project: project) }
-    end
-
-    trait :on_snippet do
-      noteable { create(:snippet, project: project) }
+      noteable { association(:issue, project: project) }
     end
 
     trait :on_merge_request do
-      noteable { create(:merge_request, source_project: project) }
+      noteable { association(:merge_request, source_project: project) }
     end
 
     trait :on_project_snippet do
-      noteable { create(:project_snippet, project: project) }
+      noteable { association(:project_snippet, project: project) }
     end
 
     trait :on_personal_snippet do
-      noteable { create(:personal_snippet) }
+      noteable { association(:personal_snippet) }
       project { nil }
     end
 

spec/factories/sequences.rb

@@ -11,4 +11,5 @@ FactoryBot.define do
   sequence(:label_title) { |n| "label#{n}" }
   sequence(:branch) { |n| "my-branch-#{n}" }
   sequence(:past_time) { |n| 4.hours.ago + (2 * n).seconds }
+  sequence(:iid)
 end

spec/frontend/fixtures/snippet.rb

@@ -27,7 +27,7 @@ describe SnippetsController, '(JavaScript fixtures)', type: :controller do
   end
 
   it 'snippets/show.html' do
-    create(:discussion_note_on_snippet, noteable: snippet, project: project, author: admin, note: '- [ ] Task List Item')
+    create(:discussion_note_on_project_snippet, noteable: snippet, project: project, author: admin, note: '- [ ] Task List Item')
 
     get(:show, params: { id: snippet.to_param })
 

spec/helpers/events_helper_spec.rb

@@ -181,7 +181,7 @@ describe EventsHelper do
     end
 
     it 'returns a project snippet note url' do
-      event.target = create(:note, :on_snippet, note: 'keep going')
+      event.target = create(:note_on_project_snippet, note: 'keep going')
 
       expect(subject).to eq("#{project_base_url}/snippets/#{event.note_target.id}#note_#{event.target.id}")
     end

spec/lib/gitlab/gfm/reference_rewriter_spec.rb

@@ -3,11 +3,11 @@
 require 'spec_helper'
 
 describe Gitlab::Gfm::ReferenceRewriter do
-  let(:group) { create(:group) }
-  let(:old_project) { create(:project, name: 'old-project', group: group) }
-  let(:new_project) { create(:project, name: 'new-project', group: group) }
-  let(:user) { create(:user) }
+  let_it_be(:group) { create(:group) }
+  let_it_be(:user) { create(:user) }
 
+  let(:new_project) { create(:project, name: 'new-project', group: group) }
+  let(:old_project) { create(:project, name: 'old-project', group: group) }
   let(:old_project_ref) { old_project.to_reference_base(new_project) }
   let(:text) { 'some text' }
 

spec/requests/api/discussions_spec.rb

@@ -31,7 +31,7 @@ describe API::Discussions do
 
   context 'when noteable is a Snippet' do
     let!(:snippet) { create(:project_snippet, project: project, author: user) }
-    let!(:snippet_note) { create(:discussion_note_on_snippet, noteable: snippet, project: project, author: user) }
+    let!(:snippet_note) { create(:discussion_note_on_project_snippet, noteable: snippet, project: project, author: user) }
 
     it_behaves_like 'discussions API', 'projects', 'snippets', 'id' do
       let(:parent) { project }

spec/support/helpers/repo_helpers.rb

@@ -33,6 +33,7 @@ eos
   def sample_commit
     OpenStruct.new(
       id: "570e7b2abdd848b95f2f578043fc23bd6f6fd24d",
+      sha: "570e7b2abdd848b95f2f578043fc23bd6f6fd24d",
       parent_id: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9',
       author_full_name: "Dmitriy Zaporozhets",
       author_email: "dmitriy.zaporozhets@gmail.com",
@@ -50,6 +51,7 @@ eos
   def another_sample_commit
     OpenStruct.new(
       id: "e56497bb5f03a90a51293fc6d516788730953899",
+      sha: "e56497bb5f03a90a51293fc6d516788730953899",
       parent_id: '4cd80ccab63c82b4bad16faa5193fbd2aa06df40',
       author_full_name: "Sytse Sijbrandij",
       author_email: "sytse@gitlab.com",
@@ -69,6 +71,7 @@ eos
   def sample_big_commit
     OpenStruct.new(
       id: "913c66a37b4a45b9769037c55c2d238bd0942d2e",
+      sha: "913c66a37b4a45b9769037c55c2d238bd0942d2e",
       author_full_name: "Dmitriy Zaporozhets",
       author_email: "dmitriy.zaporozhets@gmail.com",
       message: <<eos
@@ -81,6 +84,7 @@ eos
   def sample_image_commit
     OpenStruct.new(
       id: "2f63565e7aac07bcdadb654e253078b727143ec4",
+      sha: "2f63565e7aac07bcdadb654e253078b727143ec4",
       author_full_name: "Dmitriy Zaporozhets",
       author_email: "dmitriy.zaporozhets@gmail.com",
       old_blob_id: '33f3729a45c02fc67d00adb1b8bca394b0e761d9',