Add latest changes from gitlab-org/gitlab@master

1 files changed, 53 insertions, 0 deletions

diff --git a/spec/graphql/mutations/merge_requests/set_milestone_spec.rb b/spec/graphql/mutations/merge_requests/set_milestone_spec.rb
new file mode 100644
index 00000000000..c2792a4bc25
--- /dev/null
+++ b/spec/graphql/mutations/merge_requests/set_milestone_spec.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Mutations::MergeRequests::SetMilestone do
+  let(:merge_request) { create(:merge_request) }
+  let(:user) { create(:user) }
+  subject(:mutation) { described_class.new(object: nil, context: { current_user: user }) }
+
+  describe '#resolve' do
+    let(:milestone) { create(:milestone, project: merge_request.project) }
+    let(:mutated_merge_request) { subject[:merge_request] }
+    subject { mutation.resolve(project_path: merge_request.project.full_path, iid: merge_request.iid, milestone: milestone) }
+
+    it 'raises an error if the resource is not accessible to the user' do
+      expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+    end
+
+    context 'when the user can update the merge request' do
+      before do
+        merge_request.project.add_developer(user)
+      end
+
+      it 'returns the merge request with the milestone' do
+        expect(mutated_merge_request).to eq(merge_request)
+        expect(mutated_merge_request.milestone).to eq(milestone)
+        expect(subject[:errors]).to be_empty
+      end
+
+      it 'returns errors merge request could not be updated' do
+        # Make the merge request invalid
+        merge_request.allow_broken = true
+        merge_request.update!(source_project: nil)
+
+        expect(subject[:errors]).not_to be_empty
+      end
+
+      context 'when passing milestone_id as nil' do
+        let(:milestone) { nil }
+
+        it 'removes the milestone' do
+          merge_request.update!(milestone: create(:milestone, project: merge_request.project))
+
+          expect(mutated_merge_request.milestone).to eq(nil)
+        end
+
+        it 'does not do anything if the MR already does not have a milestone' do
+          expect(mutated_merge_request.milestone).to eq(nil)
+        end
+      end
+    end
+  end
+end