diff options
Diffstat (limited to 'spec/services/merge_requests/mergeability_check_service_spec.rb')
| -rw-r--r-- | spec/services/merge_requests/mergeability_check_service_spec.rb | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/spec/services/merge_requests/mergeability_check_service_spec.rb b/spec/services/merge_requests/mergeability_check_service_spec.rb new file mode 100644 index 00000000000..6efece64092 --- /dev/null +++ b/spec/services/merge_requests/mergeability_check_service_spec.rb @@ -0,0 +1,285 @@ +# frozen_string_literal: true + +require 'spec_helper' + +describe MergeRequests::MergeabilityCheckService do + shared_examples_for 'unmergeable merge request' do + it 'updates or keeps merge status as cannot_be_merged' do + subject + + expect(merge_request.merge_status).to eq('cannot_be_merged') + end + + it 'does not change the merge ref HEAD' do + expect { subject }.not_to change(merge_request, :merge_ref_head) + end + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result).to be_error + end + end + + shared_examples_for 'mergeable merge request' do + it 'updates or keeps merge status as can_be_merged' do + subject + + expect(merge_request.merge_status).to eq('can_be_merged') + end + + it 'updates the merge ref' do + expect { subject }.to change(merge_request, :merge_ref_head).from(nil) + end + + it 'returns ServiceResponse.success' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result).to be_success + end + + it 'ServiceResponse has merge_ref_head payload' do + result = subject + + expect(result.payload.keys).to contain_exactly(:merge_ref_head) + expect(result.payload[:merge_ref_head].keys) + .to contain_exactly(:commit_id, :target_id, :source_id) + end + end + + describe '#execute' do + let(:project) { create(:project, :repository) } + let(:merge_request) { create(:merge_request, merge_status: :unchecked, source_project: project, target_project: project) } + let(:repo) { project.repository } + + subject { described_class.new(merge_request).execute } + + before do + project.add_developer(merge_request.author) + end + + it_behaves_like 'mergeable merge request' + + context 'when multiple calls to the service' do + it 'returns success' do + subject + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.success?).to be(true) + end + + it 'second call does not change the merge-ref' do + expect { subject }.to change(merge_request, :merge_ref_head).from(nil) + expect { subject }.not_to change(merge_request, :merge_ref_head) + end + end + + context 'disabled merge ref sync feature flag' do + before do + stub_feature_flags(merge_ref_auto_sync: false) + end + + it 'returns error and no payload' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge ref is outdated due to disabled feature') + expect(result.payload).to be_empty + end + + it 'ignores merge-ref and updates merge status' do + expect { subject }.to change(merge_request, :merge_status).from('unchecked').to('can_be_merged') + end + end + + context 'when broken' do + before do + allow(merge_request).to receive(:broken?) { true } + allow(project.repository).to receive(:can_be_merged?) { false } + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when it has conflicts' do + before do + allow(merge_request).to receive(:broken?) { false } + allow(project.repository).to receive(:can_be_merged?) { false } + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when MR cannot be merged and has no merge ref' do + before do + merge_request.mark_as_unmergeable! + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when MR cannot be merged and has outdated merge ref' do + before do + MergeRequests::MergeToRefService.new(project, merge_request.author).execute(merge_request) + merge_request.mark_as_unmergeable! + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when merge request is not given' do + subject { described_class.new(nil).execute } + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.message).to eq('Invalid argument') + end + end + + context 'when read only DB' do + it 'returns ServiceResponse.error' do + allow(Gitlab::Database).to receive(:read_only?) { true } + + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.message).to eq('Unsupported operation') + end + end + + context 'when fails to update the merge-ref' do + before do + expect_next_instance_of(MergeRequests::MergeToRefService) do |merge_to_ref| + expect(merge_to_ref).to receive(:execute).and_return(status: :failed) + end + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'recheck enforced' do + subject { described_class.new(merge_request).execute(recheck: true) } + + context 'when MR is mergeable and merge-ref auto-sync is disabled' do + before do + stub_feature_flags(merge_ref_auto_sync: false) + merge_request.mark_as_mergeable! + end + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge ref is outdated due to disabled feature') + expect(result.payload).to be_empty + end + + it 'merge status is not changed' do + subject + + expect(merge_request.merge_status).to eq('can_be_merged') + end + end + + context 'when MR is marked as mergeable, but repo is not mergeable and MR is not opened' do + before do + # Making sure that we don't touch the merge-status after + # the MR is not opened any longer. Source branch might + # have been removed, etc. + allow(merge_request).to receive(:broken?) { true } + merge_request.mark_as_mergeable! + merge_request.close! + end + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge ref cannot be updated') + expect(result.payload).to be_empty + end + + it 'does not change the merge status' do + expect { subject }.not_to change(merge_request, :merge_status).from('can_be_merged') + end + end + + context 'when MR is mergeable but merge-ref does not exists' do + before do + merge_request.mark_as_mergeable! + end + + it_behaves_like 'mergeable merge request' + end + + context 'when MR is mergeable but merge-ref is already updated' do + before do + MergeRequests::MergeToRefService.new(project, merge_request.author).execute(merge_request) + merge_request.mark_as_mergeable! + end + + it 'returns ServiceResponse.success' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result).to be_success + expect(result.payload[:merge_ref_head]).to be_present + end + + it 'does not recreate the merge-ref' do + expect(MergeRequests::MergeToRefService).not_to receive(:new) + + subject + end + end + end + end +end |