Merge branch 'jej-23867-use-mr-finder-instead-of-access-check' into 'security'

Replace MR access checks with use of MergeRequestsFinder

Split from !2024 to partially solve https://gitlab.com/gitlab-org/gitlab-ce/issues/23867

:warning: - Potentially untested
:bomb: - No test coverage
:traffic_light: - Test coverage of some sort exists (a test failed when error raised)
:vertical_traffic_light: - Test coverage of return value (a test failed when nil used)
:white_check_mark: - Permissions check tested

- [x] :bomb:  app/finders/notes_finder.rb:17
- [x] :warning:  app/views/layouts/nav/_project.html.haml:80 [`.count`]
- [x] :bomb:  app/controllers/concerns/creates_commit.rb:84
- [x] :traffic_light:  app/controllers/projects/commits_controller.rb:24
- [x] :traffic_light:  app/controllers/projects/compare_controller.rb:56
- [x] :vertical_traffic_light:  app/controllers/projects/discussions_controller.rb:29
- [x] :white_check_mark:  app/controllers/projects/todos_controller.rb:27
- [x] :vertical_traffic_light:  app/models/commit.rb:268
- [x] :white_check_mark: lib/gitlab/search_results.rb:71

- [x] https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2024/diffs#d1c10892daedb4d4dd3d4b12b6d071091eea83df_267_266 Memoize ` merged_merge_request(current_user)`
- [x] https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2024/diffs#d1c10892daedb4d4dd3d4b12b6d071091eea83df_248_247 Expected side effect for `merged_merge_request!`, consider `skip_authorization: true`.
- [x] https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2024/diffs#d1c10892daedb4d4dd3d4b12b6d071091eea83df_269_269 Scary use  of unchecked `merged_merge_request?`

See merge request !2033

4 files changed, 43 insertions, 14 deletions

diff --git a/spec/controllers/projects/todo_controller_spec.rb b/spec/controllers/projects/todo_controller_spec.rb
index 193a3f6b5a3..415c264e0dd 100644
--- a/spec/controllers/projects/todo_controller_spec.rb
+++ b/spec/controllers/projects/todo_controller_spec.rb
@@ -110,7 +110,7 @@ describe Projects::TodosController do
         end
       end
 
-      context 'when not authorized' do
+      context 'when not authorized for project' do
         it 'does not create todo for merge request user has no access to' do
           sign_in(user)
           expect do
@@ -128,6 +128,19 @@ describe Projects::TodosController do
           expect(response).to have_http_status(302)
         end
       end
+
+      context 'when not authorized for merge_request' do
+        before do
+          project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
+          project.project_feature.update!(merge_requests_access_level: ProjectFeature::PRIVATE)
+          sign_in(user)
+        end
+
+        it "doesn't create todo" do
+          expect{ go }.not_to change { user.todos.count }
+          expect(response).to have_http_status(404)
+        end
+      end
     end
   end
 end
diff --git a/spec/lib/gitlab/search_results_spec.rb b/spec/lib/gitlab/search_results_spec.rb
index f23e3522625..9614aad3e73 100644
--- a/spec/lib/gitlab/search_results_spec.rb
+++ b/spec/lib/gitlab/search_results_spec.rb
@@ -40,6 +40,15 @@ describe Gitlab::SearchResults do
         expect(results.milestones_count).to eq(1)
       end
     end
+
+    it 'includes merge requests from source and target projects' do
+      forked_project = create(:empty_project, forked_from_project: project)
+      merge_request_2 = create(:merge_request, target_project: project, source_project: forked_project, title: 'foo')
+
+      results = described_class.new(user, Project.where(id: forked_project.id), 'foo')
+
+      expect(results.objects('merge_requests')).to include merge_request_2
+    end
   end
 
   it 'does not list issues on private projects' do
@@ -152,4 +161,11 @@ describe Gitlab::SearchResults do
       expect(results.issues_count).to eq 5
     end
   end
+
+  it 'does not list merge requests on projects with limited access' do
+    project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
+    project.project_feature.update!(merge_requests_access_level: ProjectFeature::PRIVATE)
+
+    expect(results.objects('merge_requests')).not_to include merge_request
+  end
 end
diff --git a/spec/models/commit_range_spec.rb b/spec/models/commit_range_spec.rb
index d89d4342dea..30782ca75a0 100644
--- a/spec/models/commit_range_spec.rb
+++ b/spec/models/commit_range_spec.rb
@@ -137,26 +137,25 @@ describe CommitRange, models: true do
   end
 
   describe '#has_been_reverted?' do
-    it 'returns true if the commit has been reverted' do
-      issue = create(:issue)
+    let(:issue) { create(:issue) }
+    let(:user) { issue.author }
 
+    it 'returns true if the commit has been reverted' do
       create(:note_on_issue,
              noteable: issue,
              system: true,
-             note: commit1.revert_description,
+             note: commit1.revert_description(user),
              project: issue.project)
 
       expect_any_instance_of(Commit).to receive(:reverts_commit?).
-        with(commit1).
+        with(commit1, user).
         and_return(true)
 
-      expect(commit1.has_been_reverted?(nil, issue)).to eq(true)
+      expect(commit1.has_been_reverted?(user, issue)).to eq(true)
     end
 
     it 'returns false a commit has not been reverted' do
-      issue = create(:issue)
-
-      expect(commit1.has_been_reverted?(nil, issue)).to eq(false)
+      expect(commit1.has_been_reverted?(user, issue)).to eq(false)
     end
   end
 end
diff --git a/spec/models/commit_spec.rb b/spec/models/commit_spec.rb
index eb482c7f913..0935fc0561c 100644
--- a/spec/models/commit_spec.rb
+++ b/spec/models/commit_spec.rb
@@ -179,25 +179,26 @@ eos
 
   describe '#reverts_commit?' do
     let(:another_commit) { double(:commit, revert_description: "This reverts commit #{commit.sha}") }
+    let(:user) { commit.author }
 
-    it { expect(commit.reverts_commit?(another_commit)).to be_falsy }
+    it { expect(commit.reverts_commit?(another_commit, user)).to be_falsy }
 
     context 'commit has no description' do
       before { allow(commit).to receive(:description?).and_return(false) }
 
-      it { expect(commit.reverts_commit?(another_commit)).to be_falsy }
+      it { expect(commit.reverts_commit?(another_commit, user)).to be_falsy }
     end
 
     context "another_commit's description does not revert commit" do
       before { allow(commit).to receive(:description).and_return("Foo Bar") }
 
-      it { expect(commit.reverts_commit?(another_commit)).to be_falsy }
+      it { expect(commit.reverts_commit?(another_commit, user)).to be_falsy }
     end
 
     context "another_commit's description reverts commit" do
       before { allow(commit).to receive(:description).and_return("Foo #{another_commit.revert_description} Bar") }
 
-      it { expect(commit.reverts_commit?(another_commit)).to be_truthy }
+      it { expect(commit.reverts_commit?(another_commit, user)).to be_truthy }
     end
 
     context "another_commit's description reverts merged merge request" do
@@ -207,7 +208,7 @@ eos
         allow(commit).to receive(:description).and_return("Foo #{another_commit.revert_description} Bar")
       end
 
-      it { expect(commit.reverts_commit?(another_commit)).to be_truthy }
+      it { expect(commit.reverts_commit?(another_commit, user)).to be_truthy }
     end
   end