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# 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
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 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'
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'
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'
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context 'when MR cannot be merged and has outdated merge ref' do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'
end
end
end
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