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require 'spec_helper'
describe Gitlab::BackgroundMigration::DeleteDiffFiles, :migration, schema: 20180626125654 do
describe '#perform' do
context 'when diff files can be deleted' do
let(:merge_request) { create(:merge_request, :merged) }
let(:merge_request_diff) do
merge_request.create_merge_request_diff
merge_request.merge_request_diffs.first
end
it 'deletes all merge request diff files' do
expect { described_class.new.perform(merge_request_diff.id) }
.to change { merge_request_diff.merge_request_diff_files.count }
.from(20).to(0)
end
it 'updates state to without_files' do
expect { described_class.new.perform(merge_request_diff.id) }
.to change { merge_request_diff.reload.state }
.from('collected').to('without_files')
end
it 'rollsback if something goes wrong' do
expect(MergeRequestDiffFile).to receive_message_chain(:where, :delete_all)
.and_raise
expect { described_class.new.perform(merge_request_diff.id) }
.to raise_error
merge_request_diff.reload
expect(merge_request_diff.state).to eq('collected')
expect(merge_request_diff.merge_request_diff_files.count).to eq(20)
end
end
it 'deletes no merge request diff files when MR is not merged' do
merge_request = create(:merge_request, :opened)
merge_request.create_merge_request_diff
merge_request_diff = merge_request.merge_request_diffs.first
expect { described_class.new.perform(merge_request_diff.id) }
.not_to change { merge_request_diff.merge_request_diff_files.count }
.from(20)
end
it 'deletes no merge request diff files when diff is marked as "without_files"' do
merge_request = create(:merge_request, :merged)
merge_request.create_merge_request_diff
merge_request_diff = merge_request.merge_request_diffs.first
merge_request_diff.clean!
expect { described_class.new.perform(merge_request_diff.id) }
.not_to change { merge_request_diff.merge_request_diff_files.count }
.from(20)
end
it 'deletes no merge request diff files when diff is the latest' do
merge_request = create(:merge_request, :merged)
merge_request_diff = merge_request.merge_request_diff
expect { described_class.new.perform(merge_request_diff.id) }
.not_to change { merge_request_diff.merge_request_diff_files.count }
.from(20)
end
end
end
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