require 'spec_helper' describe DiffLineSerializer do let(:line) { Gitlab::Diff::Line.new('hello world', 'new', 1, nil, 1) } let(:serializer) { described_class.new.represent(line) } describe '#to_json' do subject { serializer.to_json } it 'matches the schema' do expect(subject).to match_schema('entities/diff_line') end context 'when lines are parallel' do let(:right_line) { Gitlab::Diff::Line.new('right line', 'new', 1, nil, 1) } let(:left_line) { Gitlab::Diff::Line.new('left line', 'match', 1, nil, 1) } let(:parallel_line) { [{ right: right_line, left: left_line }] } let(:serializer) { described_class.new.represent(parallel_line, {}, DiffLineParallelEntity) } it 'matches the schema' do expect(subject).to match_schema('entities/diff_line_parallel') end end end end