Merge branch '20708-new-branch-is-immediatelly-tagged-as-merged' into 'master'

Removes inconsistency regarding tagging immediately as merged once you create a …

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?


Closes #20708

See merge request !6408

17 files changed, 78 insertions, 45 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 201bab610ba..fc362ac3669 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -150,6 +150,7 @@ v 8.12.1
   - Fix issue with search filter labels not displaying
 
 v 8.12.0
+  - Removes inconsistency regarding tagging immediatelly as merged once you create a new branch. !6408
   - Update the rouge gem to 2.0.6, which adds highlighting support for JSX, Prometheus, and others. !6251
   - Only check :can_resolve permission if the note is resolvable
   - Bump fog-aws to v0.11.0 to support ap-south-1 region
diff --git a/app/models/repository.rb b/app/models/repository.rb
index 4da1933c189..608c99eed46 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -1016,7 +1016,8 @@ class Repository
     root_ref_commit = commit(root_ref)
 
     if branch_commit
-      is_ancestor?(branch_commit.id, root_ref_commit.id)
+      same_head = branch_commit.id == root_ref_commit.id
+      !same_head && is_ancestor?(branch_commit.id, root_ref_commit.id)
     else
       nil
     end
diff --git a/spec/controllers/projects/commit_controller_spec.rb b/spec/controllers/projects/commit_controller_spec.rb
index 7e440193d7b..646b097d74e 100644
--- a/spec/controllers/projects/commit_controller_spec.rb
+++ b/spec/controllers/projects/commit_controller_spec.rb
@@ -102,15 +102,16 @@ describe Projects::CommitController do
     describe "as patch" do
       include_examples "export as", :patch
       let(:format) { :patch }
+      let(:commit2) { project.commit('498214de67004b1da3d820901307bed2a68a8ef6') }
 
       it "is a git email patch" do
-        go(id: commit.id, format: format)
+        go(id: commit2.id, format: format)
 
-        expect(response.body).to start_with("From #{commit.id}")
+        expect(response.body).to start_with("From #{commit2.id}")
       end
 
       it "contains a git diff" do
-        go(id: commit.id, format: format)
+        go(id: commit2.id, format: format)
 
         expect(response.body).to match(/^diff --git/)
       end
@@ -135,6 +136,8 @@ describe Projects::CommitController do
 
   describe "GET branches" do
     it "contains branch and tags information" do
+      commit = project.commit('5937ac0a7beb003549fc5fd26fc247adbce4a52e')
+
       get(:branches,
           namespace_id: project.namespace.to_param,
           project_id: project.to_param,
@@ -254,16 +257,17 @@ describe Projects::CommitController do
     end
 
     let(:existing_path) { '.gitmodules' }
+    let(:commit2) { project.commit('5937ac0a7beb003549fc5fd26fc247adbce4a52e') }
 
     context 'when the commit exists' do
       context 'when the user has access to the project' do
         context 'when the path exists in the diff' do
           it 'enables diff notes' do
-            diff_for_path(id: commit.id, old_path: existing_path, new_path: existing_path)
+            diff_for_path(id: commit2.id, old_path: existing_path, new_path: existing_path)
 
             expect(assigns(:diff_notes_disabled)).to be_falsey
             expect(assigns(:comments_target)).to eq(noteable_type: 'Commit',
-                                                    commit_id: commit.id)
+                                                    commit_id: commit2.id)
           end
 
           it 'only renders the diffs for the path given' do
@@ -272,7 +276,7 @@ describe Projects::CommitController do
               meth.call(diffs)
             end
 
-            diff_for_path(id: commit.id, old_path: existing_path, new_path: existing_path)
+            diff_for_path(id: commit2.id, old_path: existing_path, new_path: existing_path)
           end
         end
 
diff --git a/spec/helpers/search_helper_spec.rb b/spec/helpers/search_helper_spec.rb
index c5b5aa8c445..64aa41020c9 100644
--- a/spec/helpers/search_helper_spec.rb
+++ b/spec/helpers/search_helper_spec.rb
@@ -19,7 +19,7 @@ describe SearchHelper do
       expect(subject.filename).to eq('CHANGELOG')
       expect(subject.basename).to eq('CHANGELOG')
       expect(subject.ref).to eq('master')
-      expect(subject.startline).to eq(186)
+      expect(subject.startline).to eq(188)
       expect(subject.data.lines[2]).to eq("  - Feature: Replace teams with group membership\n")
     end
 
diff --git a/spec/lib/gitlab/data_builder/push_spec.rb b/spec/lib/gitlab/data_builder/push_spec.rb
index b73434e8dd7..a379f798a16 100644
--- a/spec/lib/gitlab/data_builder/push_spec.rb
+++ b/spec/lib/gitlab/data_builder/push_spec.rb
@@ -8,13 +8,13 @@ describe Gitlab::DataBuilder::Push, lib: true do
     let(:data) { described_class.build_sample(project, user) }
 
     it { expect(data).to be_a(Hash) }
-    it { expect(data[:before]).to eq('6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9') }
-    it { expect(data[:after]).to eq('5937ac0a7beb003549fc5fd26fc247adbce4a52e') }
+    it { expect(data[:before]).to eq('1b12f15a11fc6e62177bef08f47bc7b5ce50b141') }
+    it { expect(data[:after]).to eq('b83d6e391c22777fca1ed3012fce84f633d7fed0') }
     it { expect(data[:ref]).to eq('refs/heads/master') }
     it { expect(data[:commits].size).to eq(3) }
     it { expect(data[:total_commits_count]).to eq(3) }
-    it { expect(data[:commits].first[:added]).to eq(['gitlab-grack']) }
-    it { expect(data[:commits].first[:modified]).to eq(['.gitmodules']) }
+    it { expect(data[:commits].first[:added]).to eq(['bar/branch-test.txt']) }
+    it { expect(data[:commits].first[:modified]).to eq([]) }
     it { expect(data[:commits].first[:removed]).to eq([]) }
 
     include_examples 'project hook data with deprecateds'
diff --git a/spec/mailers/notify_spec.rb b/spec/mailers/notify_spec.rb
index 0e4130e8a3a..c8207e58e90 100644
--- a/spec/mailers/notify_spec.rb
+++ b/spec/mailers/notify_spec.rb
@@ -628,7 +628,7 @@ describe Notify do
         it_behaves_like 'a user cannot unsubscribe through footer link'
 
         it 'has the correct subject' do
-          is_expected.to have_subject /#{commit.title} \(#{commit.short_id}\)/
+          is_expected.to have_subject /Re: #{project.name} | #{commit.title} \(#{commit.short_id}\)/
         end
 
         it 'contains a link to the commit' do
diff --git a/spec/models/commit_spec.rb b/spec/models/commit_spec.rb
index d3e6a6648cc..51be3f36135 100644
--- a/spec/models/commit_spec.rb
+++ b/spec/models/commit_spec.rb
@@ -164,10 +164,10 @@ eos
     let(:data) { commit.hook_attrs(with_changed_files: true) }
 
     it { expect(data).to be_a(Hash) }
-    it { expect(data[:message]).to include('Add submodule from gitlab.com') }
-    it { expect(data[:timestamp]).to eq('2014-02-27T11:01:38+02:00') }
-    it { expect(data[:added]).to eq(["gitlab-grack"]) }
-    it { expect(data[:modified]).to eq([".gitmodules"]) }
+    it { expect(data[:message]).to include('adds bar folder and branch-test text file to check Repository merged_to_root_ref method') }
+    it { expect(data[:timestamp]).to eq('2016-09-27T14:37:46+00:00') }
+    it { expect(data[:added]).to eq(["bar/branch-test.txt"]) }
+    it { expect(data[:modified]).to eq([]) }
     it { expect(data[:removed]).to eq([]) }
   end
 
diff --git a/spec/models/merge_request_diff_spec.rb b/spec/models/merge_request_diff_spec.rb
index 96f1f60dbc0..f27de0948ee 100644
--- a/spec/models/merge_request_diff_spec.rb
+++ b/spec/models/merge_request_diff_spec.rb
@@ -6,9 +6,9 @@ describe MergeRequestDiff, models: true do
 
     it { expect(subject).to be_valid }
     it { expect(subject).to be_persisted }
-    it { expect(subject.commits.count).to eq(5) }
-    it { expect(subject.diffs.count).to eq(8) }
-    it { expect(subject.head_commit_sha).to eq('5937ac0a7beb003549fc5fd26fc247adbce4a52e') }
+    it { expect(subject.commits.count).to eq(29) }
+    it { expect(subject.diffs.count).to eq(20) }
+    it { expect(subject.head_commit_sha).to eq('b83d6e391c22777fca1ed3012fce84f633d7fed0') }
     it { expect(subject.base_commit_sha).to eq('ae73cb07c9eeaf35924a10f713b364d32b2dd34f') }
     it { expect(subject.start_commit_sha).to eq('0b4bc9a49b562e85de7cc9e834518ea6828729b9') }
   end
diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb
index 38b6da50168..5884b4cff8c 100644
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -489,7 +489,7 @@ describe MergeRequest, models: true do
       subject(:merge_request_with_divergence) { create(:merge_request, :diverged, source_project: project, target_project: project) }
 
       it 'counts commits that are on target branch but not on source branch' do
-        expect(subject.diverged_commits_count).to eq(5)
+        expect(subject.diverged_commits_count).to eq(29)
       end
     end
 
@@ -497,7 +497,7 @@ describe MergeRequest, models: true do
       subject(:merge_request_fork_with_divergence) { create(:merge_request, :diverged, source_project: fork_project, target_project: project) }
 
       it 'counts commits that are on target branch but not on source branch' do
-        expect(subject.diverged_commits_count).to eq(5)
+        expect(subject.diverged_commits_count).to eq(29)
       end
     end
 
diff --git a/spec/models/repository_spec.rb b/spec/models/repository_spec.rb
index 4641f297465..4b80efbe12b 100644
--- a/spec/models/repository_spec.rb
+++ b/spec/models/repository_spec.rb
@@ -122,11 +122,30 @@ describe Repository, models: true do
   end
 
   describe '#merged_to_root_ref?' do
-    context 'merged branch' do
+    context 'merged branch without ff' do
+      subject { repository.merged_to_root_ref?('branch-merged') }
+
+      it { is_expected.to be_truthy }
+    end
+
+    # If the HEAD was ff then it will be false
+    context 'merged with ff' do
       subject { repository.merged_to_root_ref?('improve/awesome') }
 
       it { is_expected.to be_truthy }
     end
+
+    context 'not merged branch' do
+      subject { repository.merged_to_root_ref?('not-merged-branch') }
+
+      it { is_expected.to be_falsey }
+    end
+
+    context 'default branch' do
+      subject { repository.merged_to_root_ref?('master') }
+
+      it { is_expected.to be_falsey }
+    end
   end
 
   describe '#can_be_merged?' do
@@ -324,7 +343,7 @@ describe Repository, models: true do
       subject { results.first }
 
       it { is_expected.to be_an String }
-      it { expect(subject.lines[2]).to eq("master:CHANGELOG:188:  - Feature: Replace teams with group membership\n") }
+      it { expect(subject.lines[2]).to eq("master:CHANGELOG:190:  - Feature: Replace teams with group membership\n") }
     end
   end
 
@@ -968,10 +987,10 @@ describe Repository, models: true do
 
     context 'cherry-picking a merge commit' do
       it 'cherry-picks the changes' do
-        expect(repository.blob_at_branch('master', 'foo/bar/.gitkeep')).to be_nil
+        expect(repository.blob_at_branch('improve/awesome', 'foo/bar/.gitkeep')).to be_nil
 
-        repository.cherry_pick(user, pickable_merge, 'master')
-        expect(repository.blob_at_branch('master', 'foo/bar/.gitkeep')).not_to be_nil
+        repository.cherry_pick(user, pickable_merge, 'improve/awesome')
+        expect(repository.blob_at_branch('improve/awesome', 'foo/bar/.gitkeep')).not_to be_nil
       end
     end
   end
diff --git a/spec/requests/api/commits_spec.rb b/spec/requests/api/commits_spec.rb
index aa610557056..66fa0c0c01f 100644
--- a/spec/requests/api/commits_spec.rb
+++ b/spec/requests/api/commits_spec.rb
@@ -53,7 +53,12 @@ describe API::API, api: true  do
 
         get api("/projects/#{project.id}/repository/commits?until=#{before.utc.iso8601}", user)
 
-        expect(json_response.size).to eq(commits.size - 1)
+        if commits.size >= 20
+          expect(json_response.size).to eq(20)
+        else
+          expect(json_response.size).to eq(commits.size - 1)
+        end
+
         expect(json_response.first["id"]).to eq(commits.second.id)
         expect(json_response.second["id"]).to eq(commits.third.id)
       end
@@ -447,11 +452,12 @@ describe API::API, api: true  do
       end
 
       it 'returns the inline comment' do
-        post api("/projects/#{project.id}/repository/commits/#{project.repository.commit.id}/comments", user), note: 'My comment', path: project.repository.commit.raw_diffs.first.new_path, line: 7, line_type: 'new'
+        post api("/projects/#{project.id}/repository/commits/#{project.repository.commit.id}/comments", user), note: 'My comment', path: project.repository.commit.raw_diffs.first.new_path, line: 1, line_type: 'new'
+
         expect(response).to have_http_status(201)
         expect(json_response['note']).to eq('My comment')
         expect(json_response['path']).to eq(project.repository.commit.raw_diffs.first.new_path)
-        expect(json_response['line']).to eq(7)
+        expect(json_response['line']).to eq(1)
         expect(json_response['line_type']).to eq('new')
       end
 
diff --git a/spec/requests/api/repositories_spec.rb b/spec/requests/api/repositories_spec.rb
index 80a856a6e90..c4dc2d9006a 100644
--- a/spec/requests/api/repositories_spec.rb
+++ b/spec/requests/api/repositories_spec.rb
@@ -21,7 +21,7 @@ describe API::API, api: true  do
         expect(response).to have_http_status(200)
 
         expect(json_response).to be_an Array
-        expect(json_response.first['name']).to eq('encoding')
+        expect(json_response.first['name']).to eq('bar')
         expect(json_response.first['type']).to eq('tree')
         expect(json_response.first['mode']).to eq('040000')
       end
@@ -166,9 +166,9 @@ describe API::API, api: true  do
       expect(response).to have_http_status(200)
       expect(json_response).to be_an Array
       contributor = json_response.first
-      expect(contributor['email']).to eq('dmitriy.zaporozhets@gmail.com')
-      expect(contributor['name']).to eq('Dmitriy Zaporozhets')
-      expect(contributor['commits']).to eq(13)
+      expect(contributor['email']).to eq('tiagonbotelho@hotmail.com')
+      expect(contributor['name']).to eq('tiagonbotelho')
+      expect(contributor['commits']).to eq(1)
       expect(contributor['additions']).to eq(0)
       expect(contributor['deletions']).to eq(0)
     end
diff --git a/spec/requests/git_http_spec.rb b/spec/requests/git_http_spec.rb
index 413d06715b3..5a1ed7d4a25 100644
--- a/spec/requests/git_http_spec.rb
+++ b/spec/requests/git_http_spec.rb
@@ -439,8 +439,8 @@ describe 'Git HTTP requests', lib: true do
         before do
           # Provide a dummy file in its place
           allow_any_instance_of(Repository).to receive(:blob_at).and_call_original
-          allow_any_instance_of(Repository).to receive(:blob_at).with('5937ac0a7beb003549fc5fd26fc247adbce4a52e', 'info/refs') do
-            Gitlab::Git::Blob.find(project.repository, 'master', '.gitignore')
+          allow_any_instance_of(Repository).to receive(:blob_at).with('b83d6e391c22777fca1ed3012fce84f633d7fed0', 'info/refs') do
+            Gitlab::Git::Blob.find(project.repository, 'master', 'bar/branch-test.txt')
           end
 
           get "/#{project.path_with_namespace}/blob/master/info/refs"
diff --git a/spec/services/merge_requests/refresh_service_spec.rb b/spec/services/merge_requests/refresh_service_spec.rb
index 59d3912018a..5b4e4908add 100644
--- a/spec/services/merge_requests/refresh_service_spec.rb
+++ b/spec/services/merge_requests/refresh_service_spec.rb
@@ -118,7 +118,7 @@ describe MergeRequests::RefreshService, services: true do
 
       it { expect(@merge_request.notes).to be_empty }
       it { expect(@merge_request).to be_open }
-      it { expect(@fork_merge_request.notes.last.note).to include('Added 4 commits') }
+      it { expect(@fork_merge_request.notes.last.note).to include('Added 28 commits') }
       it { expect(@fork_merge_request).to be_open }
       it { expect(@build_failed_todo).to be_pending }
       it { expect(@fork_build_failed_todo).to be_pending }
@@ -169,7 +169,7 @@ describe MergeRequests::RefreshService, services: true do
 
         notes = @fork_merge_request.notes.reorder(:created_at).map(&:note)
         expect(notes[0]).to include('Restored source branch `master`')
-        expect(notes[1]).to include('Added 4 commits')
+        expect(notes[1]).to include('Added 28 commits')
         expect(@fork_merge_request).to be_open
       end
     end
diff --git a/spec/services/system_note_service_spec.rb b/spec/services/system_note_service_spec.rb
index 304d4e62396..b4ba28dfe8e 100644
--- a/spec/services/system_note_service_spec.rb
+++ b/spec/services/system_note_service_spec.rb
@@ -54,7 +54,7 @@ describe SystemNoteService, services: true do
         it 'adds a message line for each commit' do
           new_commits.each_with_index do |commit, i|
             # Skip the header
-            expect(note_lines[i + 1]).to eq "* #{commit.short_id} - #{commit.title}"
+            expect(HTMLEntities.new.decode(note_lines[i + 1])).to eq "* #{commit.short_id} - #{commit.title}"
           end
         end
       end
@@ -81,7 +81,7 @@ describe SystemNoteService, services: true do
             end
 
             it 'includes a commit count' do
-              expect(summary_line).to end_with " - 2 commits from branch `feature`"
+              expect(summary_line).to end_with " - 26 commits from branch `feature`"
             end
           end
 
@@ -91,7 +91,7 @@ describe SystemNoteService, services: true do
             end
 
             it 'includes a commit count' do
-              expect(summary_line).to end_with " - 2 commits from branch `feature`"
+              expect(summary_line).to end_with " - 26 commits from branch `feature`"
             end
           end
 
@@ -537,7 +537,7 @@ describe SystemNoteService, services: true do
     let(:mergereq)   { create(:merge_request, :simple, target_project: project, source_project: project) }
     let(:jira_issue) { ExternalIssue.new("JIRA-1", project)}
     let(:jira_tracker) { project.jira_service }
-    let(:commit)     { project.commit }
+    let(:commit)     { project.repository.commits('master').find { |commit| commit.id == '5937ac0a7beb003549fc5fd26fc247adbce4a52e' } }
 
     context 'in JIRA issue tracker' do
       before do
diff --git a/spec/support/test_env.rb b/spec/support/test_env.rb
index 0097dbf8fad..d56274d0979 100644
--- a/spec/support/test_env.rb
+++ b/spec/support/test_env.rb
@@ -5,6 +5,8 @@ module TestEnv
 
   # When developing the seed repository, comment out the branch you will modify.
   BRANCH_SHA = {
+    'not-merged-branch'                  => 'b83d6e3',
+    'branch-merged'                      => '498214d',
     'empty-branch'                       => '7efb185',
     'ends-with.json'                     => '98b0d8b',
     'flatten-dir'                        => 'e56497b',
@@ -14,7 +16,7 @@ module TestEnv
     'improve/awesome'                    => '5937ac0',
     'markdown'                           => '0ed8c6c',
     'lfs'                                => 'be93687',
-    'master'                             => '5937ac0',
+    'master'                             => 'b83d6e3',
     "'test'"                             => 'e56497b',
     'orphaned-branch'                    => '45127a9',
     'binary-encoding'                    => '7b1cf43',
diff --git a/spec/workers/emails_on_push_worker_spec.rb b/spec/workers/emails_on_push_worker_spec.rb
index 7ca2c29da1c..036d037f3f9 100644
--- a/spec/workers/emails_on_push_worker_spec.rb
+++ b/spec/workers/emails_on_push_worker_spec.rb
@@ -57,7 +57,7 @@ describe EmailsOnPushWorker do
       end
 
       it "sends a mail with the correct subject" do
-        expect(email.subject).to include('Change some files')
+        expect(email.subject).to include('adds bar folder and branch-test text file')
       end
 
       it "mentions force pushing in the body" do
@@ -73,7 +73,7 @@ describe EmailsOnPushWorker do
       before { perform }
 
       it "sends a mail with the correct subject" do
-        expect(email.subject).to include('Change some files')
+        expect(email.subject).to include('adds bar folder and branch-test text file')
       end
 
       it "does not mention force pushing in the body" do