Merge branch 'rc-new-members-approve-request-access-service' into 'master'

New `Members::ApproveAccessRequestService`

Part of #21979.

## Does this MR meet the acceptance criteria?

- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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)

See merge request !6266

1 files changed, 96 insertions, 0 deletions

diff --git a/spec/services/members/approve_access_request_service_spec.rb b/spec/services/members/approve_access_request_service_spec.rb
new file mode 100644
index 00000000000..6fca80b5613
--- /dev/null
+++ b/spec/services/members/approve_access_request_service_spec.rb
@@ -0,0 +1,96 @@
+require 'spec_helper'
+
+describe Members::ApproveAccessRequestService, services: true do
+  let(:user) { create(:user) }
+  let(:access_requester) { create(:user) }
+  let(:project) { create(:project, :public) }
+  let(:group) { create(:group, :public) }
+
+  shared_examples 'a service raising ActiveRecord::RecordNotFound' do
+    it 'raises ActiveRecord::RecordNotFound' do
+      expect { described_class.new(source, user, params).execute }.to raise_error(ActiveRecord::RecordNotFound)
+    end
+  end
+
+  shared_examples 'a service raising Gitlab::Access::AccessDeniedError' do
+    it 'raises Gitlab::Access::AccessDeniedError' do
+      expect { described_class.new(source, user, params).execute }.to raise_error(Gitlab::Access::AccessDeniedError)
+    end
+  end
+
+  shared_examples 'a service approving an access request' do
+    it 'succeeds' do
+      expect { described_class.new(source, user, params).execute }.to change { source.requesters.count }.by(-1)
+    end
+
+    it 'returns a <Source>Member' do
+      member = described_class.new(source, user, params).execute
+
+      expect(member).to be_a "#{source.class.to_s}Member".constantize
+      expect(member.requested_at).to be_nil
+    end
+
+    context 'with a custom access level' do
+      let(:params) { { user_id: access_requester.id, access_level: Gitlab::Access::MASTER } }
+
+      it 'returns a ProjectMember with the custom access level' do
+        member = described_class.new(source, user, params).execute
+
+        expect(member.access_level).to eq Gitlab::Access::MASTER
+      end
+    end
+  end
+
+  context 'when no access requester are found' do
+    let(:params) { { user_id: 42 } }
+
+    it_behaves_like 'a service raising ActiveRecord::RecordNotFound' do
+      let(:source) { project }
+    end
+
+    it_behaves_like 'a service raising ActiveRecord::RecordNotFound' do
+      let(:source) { group }
+    end
+  end
+
+  context 'when an access requester is found' do
+    before do
+      project.request_access(access_requester)
+      group.request_access(access_requester)
+    end
+    let(:params) { { user_id: access_requester.id } }
+
+    context 'when current user cannot approve access request to the project' do
+      it_behaves_like 'a service raising Gitlab::Access::AccessDeniedError' do
+        let(:source) { project }
+      end
+
+      it_behaves_like 'a service raising Gitlab::Access::AccessDeniedError' do
+        let(:source) { group }
+      end
+    end
+
+    context 'when current user can approve access request to the project' do
+      before do
+        project.team << [user, :master]
+        group.add_owner(user)
+      end
+
+      it_behaves_like 'a service approving an access request' do
+        let(:source) { project }
+      end
+
+      it_behaves_like 'a service approving an access request' do
+        let(:source) { group }
+      end
+
+      context 'when given a :id' do
+        let(:params) { { id: project.requesters.find_by!(user_id: access_requester.id).id } }
+
+        it_behaves_like 'a service approving an access request' do
+          let(:source) { project }
+        end
+      end
+    end
+  end
+end