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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe MergeRequests::FfMergeService do
let(:user) { create(:user) }
let(:user2) { create(:user) }
let(:merge_request) do
create(:merge_request,
source_branch: 'flatten-dir',
target_branch: 'improve/awesome',
assignees: [user2],
author: create(:user))
end
let(:project) { merge_request.project }
let(:valid_merge_params) { { sha: merge_request.diff_head_sha } }
before do
project.add_maintainer(user)
project.add_developer(user2)
end
describe '#execute' do
[true, false].each do |state_tracking_enabled|
context "valid params with state_tracking #{state_tracking_enabled ? 'enabled' : 'disabled'}" do
let(:service) { described_class.new(project, user, valid_merge_params) }
def execute_ff_merge
perform_enqueued_jobs do
service.execute(merge_request)
end
end
before do
stub_feature_flags(track_resource_state_change_events: state_tracking_enabled)
allow(service).to receive(:execute_hooks)
end
it "does not create merge commit" do
execute_ff_merge
source_branch_sha = merge_request.source_project.repository.commit(merge_request.source_branch).sha
target_branch_sha = merge_request.target_project.repository.commit(merge_request.target_branch).sha
expect(source_branch_sha).to eq(target_branch_sha)
end
it 'keeps the merge request valid' do
expect { execute_ff_merge }
.not_to change { merge_request.valid? }
end
it 'updates the merge request to merged' do
expect { execute_ff_merge }
.to change { merge_request.merged? }
.from(false)
.to(true)
end
it 'sends email to user2 about merge of new merge_request' do
execute_ff_merge
email = ActionMailer::Base.deliveries.last
expect(email.to.first).to eq(user2.email)
expect(email.subject).to include(merge_request.title)
end
it 'creates system note about merge_request merge' do
execute_ff_merge
if state_tracking_enabled
event = merge_request.resource_state_events.last
expect(event.state).to eq('merged')
else
note = merge_request.notes.last
expect(note.note).to include 'merged'
end
end
it 'does not update squash_commit_sha if it is not a squash' do
expect { execute_ff_merge }.not_to change { merge_request.squash_commit_sha }
end
it 'updates squash_commit_sha if it is a squash' do
merge_request.update!(squash: true)
expect { execute_ff_merge }
.to change { merge_request.squash_commit_sha }
.from(nil)
end
end
end
context 'error handling' do
let(:service) { described_class.new(project, user, valid_merge_params.merge(commit_message: 'Awesome message')) }
before do
allow(Gitlab::AppLogger).to receive(:error)
end
it 'logs and saves error if there is an exception' do
error_message = 'error message'
allow(service).to receive(:repository).and_raise("error message")
allow(service).to receive(:execute_hooks)
service.execute(merge_request)
expect(merge_request.merge_error).to include(error_message)
expect(Gitlab::AppLogger).to have_received(:error).with(a_string_matching(error_message))
end
it 'logs and saves error if there is an PreReceiveError exception' do
error_message = 'error message'
raw_message = 'The truth is out there'
pre_receive_error = Gitlab::Git::PreReceiveError.new(raw_message, fallback_message: error_message)
allow(service).to receive(:repository).and_raise(pre_receive_error)
allow(service).to receive(:execute_hooks)
expect(Gitlab::ErrorTracking).to receive(:track_exception).with(
pre_receive_error,
pre_receive_message: raw_message,
merge_request_id: merge_request.id
)
service.execute(merge_request)
expect(merge_request.merge_error).to include(error_message)
expect(Gitlab::AppLogger).to have_received(:error).with(a_string_matching(error_message))
end
it 'does not update squash_commit_sha if squash merge is not successful' do
merge_request.update!(squash: true)
expect(project.repository.raw).to receive(:ff_merge) do
raise 'Merge error'
end
expect { service.execute(merge_request) }.not_to change { merge_request.squash_commit_sha }
end
end
end
end
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