require 'spec_helper' describe Gitlab::Diff::LineMapper, lib: true do include RepoHelpers let(:project) { create(:project) } let(:repository) { project.repository } let(:commit) { project.commit(sample_commit.id) } let(:diffs) { commit.diffs } let(:diff) { diffs.first } let(:diff_file) { Gitlab::Diff::File.new(diff, diff_refs: commit.diff_refs, repository: repository) } subject { described_class.new(diff_file) } describe '#old_to_new' do context "with a diff file" do let(:mapping) do { 1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5, 6 => 6, 7 => 7, 8 => 8, 9 => nil, # nil => 9, 10 => 10, 11 => 11, 12 => 12, 13 => nil, 14 => nil, # nil => 15, # nil => 16, # nil => 17, # nil => 18, # nil => 19, # nil => 20, 15 => 21, 16 => 22, 17 => 23, 18 => 24, 19 => 25, 20 => 26, 21 => 27, # nil => 28, 22 => 29, 23 => 30, 24 => 31, 25 => 32, 26 => 33, 27 => 34, 28 => 35, 29 => 36, 30 => 37 } end it 'returns the new line number for the old line number' do mapping.each do |old_line, new_line| expect(subject.old_to_new(old_line)).to eq(new_line) end end end context "without a diff file" do let(:diff_file) { nil } it "returns the same line number" do expect(subject.old_to_new(100)).to eq(100) end end end describe '#new_to_old' do context "with a diff file" do let(:mapping) do { 1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5, 6 => 6, 7 => 7, 8 => 8, # nil => 9, 9 => nil, 10 => 10, 11 => 11, 12 => 12, # nil => 13, # nil => 14, 13 => nil, 14 => nil, 15 => nil, 16 => nil, 17 => nil, 18 => nil, 19 => nil, 20 => nil, 21 => 15, 22 => 16, 23 => 17, 24 => 18, 25 => 19, 26 => 20, 27 => 21, 28 => nil, 29 => 22, 30 => 23, 31 => 24, 32 => 25, 33 => 26, 34 => 27, 35 => 28, 36 => 29, 37 => 30 } end it 'returns the old line number for the new line number' do mapping.each do |new_line, old_line| expect(subject.new_to_old(new_line)).to eq(old_line) end end end context "without a diff file" do let(:diff_file) { nil } it "returns the same line number" do expect(subject.new_to_old(100)).to eq(100) end end end end