require 'spec_helper' describe Compare do include RepoHelpers let(:project) { create(:project, :public, :repository) } let(:commit) { project.commit } let(:start_commit) { sample_image_commit } let(:head_commit) { sample_commit } let(:raw_compare) { Gitlab::Git::Compare.new(project.repository.raw_repository, start_commit.id, head_commit.id) } subject { described_class.new(raw_compare, project) } describe '#start_commit' do it 'returns raw compare base commit' do expect(subject.start_commit.id).to eq(start_commit.id) end it 'returns nil if compare base commit is nil' do expect(raw_compare).to receive(:base).and_return(nil) expect(subject.start_commit).to eq(nil) end end describe '#commit' do it 'returns raw compare head commit' do expect(subject.commit.id).to eq(head_commit.id) end it 'returns nil if compare head commit is nil' do expect(raw_compare).to receive(:head).and_return(nil) expect(subject.commit).to eq(nil) end end describe '#base_commit_sha' do it 'returns @base_sha if it is present' do expect(project).not_to receive(:merge_base_commit) sha = double service = described_class.new(raw_compare, project, base_sha: sha) expect(service.base_commit_sha).to eq(sha) end it 'fetches merge base SHA from repo when @base_sha is nil' do expect(project).to receive(:merge_base_commit) .with(start_commit.id, head_commit.id) .once .and_call_original expect(subject.base_commit_sha) .to eq(project.repository.merge_base(start_commit.id, head_commit.id)) end it 'is memoized on first call' do expect(project).to receive(:merge_base_commit) .with(start_commit.id, head_commit.id) .once .and_call_original 3.times { subject.base_commit_sha } end it 'returns nil if there is no start_commit' do expect(subject).to receive(:start_commit).and_return(nil) expect(subject.base_commit_sha).to eq(nil) end it 'returns nil if there is no head commit' do expect(subject).to receive(:head_commit).and_return(nil) expect(subject.base_commit_sha).to eq(nil) end end describe '#diff_refs' do it 'uses base_commit_sha sha as base_sha' do expect(subject.diff_refs.base_sha).to eq(subject.base_commit_sha) end it 'uses start_commit sha as start_sha' do expect(subject.diff_refs.start_sha).to eq(start_commit.id) end it 'uses commit sha as head sha' do expect(subject.diff_refs.head_sha).to eq(head_commit.id) end end describe '#modified_paths' do context 'changes are present' do let(:raw_compare) do Gitlab::Git::Compare.new( project.repository.raw_repository, 'before-create-delete-modify-move', 'after-create-delete-modify-move' ) end it 'returns affected file paths, without duplication' do expect(subject.modified_paths).to contain_exactly(*%w{ foo/for_move.txt foo/bar/for_move.txt foo/for_create.txt foo/for_delete.txt foo/for_edit.txt }) end end context 'changes are absent' do let(:start_commit) { sample_commit } let(:head_commit) { sample_commit } it 'returns empty array' do expect(subject.modified_paths).to eq([]) end end end end