gitlab-org--gitlab-foss/spec/services/merge_requests/merge_service_spec.rb
Stan Hu 60529e0216 Properly abort a merge when merge conflicts occur
If somehow a user attempted to accept a merge request that had
conflicts (e.g. the "Accept Merge Request" button or the MR itself was
not updated), `MergeService` did not properly detect that a conflict
occurred. It would assume that the MR went through without any issues
and close the MR as though everything was fine. This could cause
data loss if the source branch were removed.

Closes #20425
2016-07-29 11:21:21 -07:00

91 lines
2.9 KiB
Ruby

require 'spec_helper'
describe MergeRequests::MergeService, services: true do
let(:user) { create(:user) }
let(:user2) { create(:user) }
let(:merge_request) { create(:merge_request, assignee: user2) }
let(:project) { merge_request.project }
before do
project.team << [user, :master]
project.team << [user2, :developer]
end
describe '#execute' do
context 'valid params' do
let(:service) { MergeRequests::MergeService.new(project, user, commit_message: 'Awesome message') }
before do
allow(service).to receive(:execute_hooks)
perform_enqueued_jobs do
service.execute(merge_request)
end
end
it { expect(merge_request).to be_valid }
it { expect(merge_request).to be_merged }
it 'should send email to user2 about merge of new merge_request' do
email = ActionMailer::Base.deliveries.last
expect(email.to.first).to eq(user2.email)
expect(email.subject).to include(merge_request.title)
end
it 'should create system note about merge_request merge' do
note = merge_request.notes.last
expect(note.note).to include 'Status changed to merged'
end
end
context 'remove source branch by author' do
let(:service) do
merge_request.merge_params['force_remove_source_branch'] = '1'
merge_request.save!
MergeRequests::MergeService.new(project, user, commit_message: 'Awesome message')
end
it 'removes the source branch' do
expect(DeleteBranchService).to receive(:new).
with(merge_request.source_project, merge_request.author).
and_call_original
service.execute(merge_request)
end
end
context "error handling" do
let(:service) { MergeRequests::MergeService.new(project, user, commit_message: 'Awesome message') }
it 'saves error if there is an exception' do
allow(service).to receive(:repository).and_raise("error")
allow(service).to receive(:execute_hooks)
service.execute(merge_request)
expect(merge_request.merge_error).to eq("Something went wrong during merge")
end
it 'saves error if there is an PreReceiveError exception' do
allow(service).to receive(:repository).and_raise(GitHooksService::PreReceiveError, "error")
allow(service).to receive(:execute_hooks)
service.execute(merge_request)
expect(merge_request.merge_error).to eq("error")
end
it 'aborts if there is a merge conflict' do
allow_any_instance_of(Repository).to receive(:merge).and_return(false)
allow(service).to receive(:execute_hooks)
service.execute(merge_request)
expect(merge_request.open?).to be_truthy
expect(merge_request.merge_commit_sha).to be_nil
expect(merge_request.merge_error).to eq("Conflicts detected during merge")
end
end
end
end