require 'spec_helper' describe MergeRequestDiff do let(:diff_with_commits) { create(:merge_request).merge_request_diff } describe 'create new record' do subject { diff_with_commits } it { expect(subject).to be_valid } it { expect(subject).to be_persisted } it { expect(subject.commits.count).to eq(29) } it { expect(subject.diffs.count).to eq(20) } it { expect(subject.head_commit_sha).to eq('b83d6e391c22777fca1ed3012fce84f633d7fed0') } it { expect(subject.base_commit_sha).to eq('ae73cb07c9eeaf35924a10f713b364d32b2dd34f') } it { expect(subject.start_commit_sha).to eq('0b4bc9a49b562e85de7cc9e834518ea6828729b9') } end describe '#latest' do let!(:mr) { create(:merge_request, :with_diffs) } let!(:first_diff) { mr.merge_request_diff } let!(:last_diff) { mr.create_merge_request_diff } it { expect(last_diff.reload).to be_latest } it { expect(first_diff.reload).not_to be_latest } end describe '#diffs' do context 'when the :ignore_whitespace_change option is set' do it 'creates a new compare object instead of loading from the DB' do expect(diff_with_commits).not_to receive(:load_diffs) expect(diff_with_commits.compare).to receive(:diffs).and_call_original diff_with_commits.raw_diffs(ignore_whitespace_change: true) end end context 'when the raw diffs are empty' do before do MergeRequestDiffFile.delete_all(merge_request_diff_id: diff_with_commits.id) end it 'returns an empty DiffCollection' do expect(diff_with_commits.raw_diffs).to be_a(Gitlab::Git::DiffCollection) expect(diff_with_commits.raw_diffs).to be_empty end end context 'when the raw diffs exist' do it 'returns the diffs' do expect(diff_with_commits.raw_diffs).to be_a(Gitlab::Git::DiffCollection) expect(diff_with_commits.raw_diffs).not_to be_empty end context 'when the :paths option is set' do let(:diffs) { diff_with_commits.raw_diffs(paths: ['files/ruby/popen.rb', 'files/ruby/popen.rb']) } it 'only returns diffs that match the (old path, new path) given' do expect(diffs.map(&:new_path)).to contain_exactly('files/ruby/popen.rb') end it 'uses the diffs from the DB' do expect(diff_with_commits).to receive(:load_diffs) diffs end end end end describe '#save_diffs' do it 'saves collected state' do mr_diff = create(:merge_request).merge_request_diff expect(mr_diff.collected?).to be_truthy end it 'saves overflow state' do allow(Commit).to receive(:max_diff_options) .and_return(max_lines: 0, max_files: 0) mr_diff = create(:merge_request).merge_request_diff expect(mr_diff.overflow?).to be_truthy end it 'saves empty state' do allow_any_instance_of(described_class).to receive_message_chain(:compare, :commits) .and_return([]) mr_diff = create(:merge_request).merge_request_diff expect(mr_diff.empty?).to be_truthy end it 'saves binary diffs correctly' do path = 'files/images/icn-time-tracking.pdf' mr_diff = create(:merge_request, source_branch: 'add-pdf-text-binary', target_branch: 'master').merge_request_diff diff_file = mr_diff.merge_request_diff_files.find_by(new_path: path) expect(diff_file).to be_binary expect(diff_file.diff).to eq(mr_diff.compare.diffs(paths: [path]).to_a.first.diff) end end describe '#commit_shas' do it 'returns all commit SHAs using commits from the DB' do expect(diff_with_commits.commit_shas).not_to be_empty expect(diff_with_commits.commit_shas).to all(match(/\h{40}/)) end end describe '#compare_with' do it 'delegates compare to the service' do expect(CompareService).to receive(:new).and_call_original diff_with_commits.compare_with(nil) end it 'uses git diff A..B approach by default' do diffs = diff_with_commits.compare_with('0b4bc9a49b562e85de7cc9e834518ea6828729b9').diffs expect(diffs.size).to eq(21) end end describe '#commits_count' do it 'returns number of commits using serialized commits' do expect(diff_with_commits.commits_count).to eq(29) end end end