require 'spec_helper' describe Gitlab::Diff::File do include RepoHelpers let(:project) { create(:project, :repository) } let(:commit) { project.commit(sample_commit.id) } let(:diff) { commit.raw_diffs.first } let(:diff_file) { described_class.new(diff, diff_refs: commit.diff_refs, repository: project.repository) } describe '#diff_lines' do let(:diff_lines) { diff_file.diff_lines } it { expect(diff_lines.size).to eq(30) } it { expect(diff_lines.first).to be_kind_of(Gitlab::Diff::Line) } end describe '#highlighted_diff_lines' do it 'highlights the diff and memoises the result' do expect(Gitlab::Diff::Highlight).to receive(:new) .with(diff_file, repository: project.repository) .once .and_call_original diff_file.highlighted_diff_lines end end describe '#mode_changed?' do it { expect(diff_file.mode_changed?).to be_falsey } end describe '#too_large?' do it 'returns true for a file that is too large' do expect(diff).to receive(:too_large?).and_return(true) expect(diff_file.too_large?).to eq(true) end it 'returns false for a file that is small enough' do expect(diff).to receive(:too_large?).and_return(false) expect(diff_file.too_large?).to eq(false) end end describe '#collapsed?' do it 'returns true for a file that is quite big' do expect(diff).to receive(:collapsed?).and_return(true) expect(diff_file.collapsed?).to eq(true) end it 'returns false for a file that is small enough' do expect(diff).to receive(:collapsed?).and_return(false) expect(diff_file.collapsed?).to eq(false) end end describe '#old_blob' do it 'returns blob of commit of base commit' do old_data = diff_file.old_blob.data expect(old_data).to include('raise "System commands must be given as an array of strings"') end end describe '#new_blob' do it 'returns blob of new commit' do data = diff_file.new_blob.data expect(data).to include('raise RuntimeError, "System commands must be given as an array of strings"') end end describe '#diffable?' do let(:commit) { project.commit('1a0b36b3cdad1d2ee32457c102a8c0b7056fa863') } let(:diffs) { commit.diffs } before do info_dir_path = File.join(project.repository.path_to_repo, 'info') FileUtils.mkdir(info_dir_path) unless File.exist?(info_dir_path) File.write(File.join(info_dir_path, 'attributes'), "*.md -diff\n") end it "returns true for files that do not have attributes" do diff_file = diffs.diff_file_with_new_path('LICENSE') expect(diff_file.diffable?).to be_truthy end it "returns false for files that have been marked as not being diffable in attributes" do diff_file = diffs.diff_file_with_new_path('README.md') expect(diff_file.diffable?).to be_falsey end end describe '#content_changed?' do context 'when created' do let(:commit) { project.commit('33f3729a45c02fc67d00adb1b8bca394b0e761d9') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/images/6049019_460s.jpg') } it 'returns false' do expect(diff_file.content_changed?).to be_falsey end end context 'when deleted' do let(:commit) { project.commit('d59c60028b053793cecfb4022de34602e1a9218e') } let(:diff_file) { commit.diffs.diff_file_with_old_path('files/js/commit.js.coffee') } it 'returns false' do expect(diff_file.content_changed?).to be_falsey end end context 'when renamed' do let(:commit) { project.commit('94bb47ca1297b7b3731ff2a36923640991e9236f') } let(:diff_file) { commit.diffs.diff_file_with_new_path('CHANGELOG.md') } it 'returns false' do expect(diff_file.content_changed?).to be_falsey end end context 'when content changed' do context 'when binary' do let(:commit) { project.commit('2f63565e7aac07bcdadb654e253078b727143ec4') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/images/6049019_460s.jpg') } context 'when the blobs are different' do it 'returns true' do expect(diff_file.content_changed?).to be_truthy end end context 'when there are no diff refs' do before do allow(diff_file).to receive(:diff_refs).and_return(nil) end it 'returns false' do expect(diff_file.content_changed?).to be_falsey end end end context 'when not binary' do let(:commit) { project.commit('570e7b2abdd848b95f2f578043fc23bd6f6fd24d') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/ruby/popen.rb') } context 'when the blobs are different' do it 'returns true' do expect(diff_file.content_changed?).to be_truthy end end context 'when there are no diff refs' do before do allow(diff_file).to receive(:diff_refs).and_return(nil) end it 'returns true' do expect(diff_file.content_changed?).to be_truthy end end end end end describe '#simple_viewer' do context 'when the file is not diffable' do before do allow(diff_file).to receive(:diffable?).and_return(false) end it 'returns a Not Diffable viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::NotDiffable) end end context 'when the content changed' do context 'when the file represented by the diff file is binary' do before do allow(diff_file).to receive(:raw_binary?).and_return(true) end it 'returns a No Preview viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::NoPreview) end end context 'when the diff file old and new blob types are different' do before do allow(diff_file).to receive(:different_type?).and_return(true) end it 'returns a No Preview viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::NoPreview) end end context 'when the file represented by the diff file is text-based' do it 'returns a text viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Text) end end end context 'when created' do let(:commit) { project.commit('913c66a37b4a45b9769037c55c2d238bd0942d2e') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/ruby/popen.rb') } before do allow(diff_file).to receive(:content_changed?).and_return(nil) end context 'when the file represented by the diff file is binary' do before do allow(diff_file).to receive(:raw_binary?).and_return(true) end it 'returns an Added viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Added) end end context 'when the diff file old and new blob types are different' do before do allow(diff_file).to receive(:different_type?).and_return(true) end it 'returns an Added viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Added) end end context 'when the file represented by the diff file is text-based' do it 'returns a text viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Text) end end end context 'when deleted' do let(:commit) { project.commit('d59c60028b053793cecfb4022de34602e1a9218e') } let(:diff_file) { commit.diffs.diff_file_with_old_path('files/js/commit.js.coffee') } before do allow(diff_file).to receive(:content_changed?).and_return(nil) end context 'when the file represented by the diff file is binary' do before do allow(diff_file).to receive(:raw_binary?).and_return(true) end it 'returns a Deleted viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Deleted) end end context 'when the diff file old and new blob types are different' do before do allow(diff_file).to receive(:different_type?).and_return(true) end it 'returns a Deleted viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Deleted) end end context 'when the file represented by the diff file is text-based' do it 'returns a text viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Text) end end end context 'when renamed' do let(:commit) { project.commit('6907208d755b60ebeacb2e9dfea74c92c3449a1f') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/js/commit.coffee') } before do allow(diff_file).to receive(:content_changed?).and_return(nil) end it 'returns a Renamed viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::Renamed) end end context 'when mode changed' do before do allow(diff_file).to receive(:content_changed?).and_return(nil) allow(diff_file).to receive(:mode_changed?).and_return(true) end it 'returns a Mode Changed viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::ModeChanged) end end context 'when no other conditions apply' do before do allow(diff_file).to receive(:content_changed?).and_return(false) allow(diff_file).to receive(:new_file?).and_return(false) allow(diff_file).to receive(:deleted_file?).and_return(false) allow(diff_file).to receive(:renamed_file?).and_return(false) allow(diff_file).to receive(:mode_changed?).and_return(false) allow(diff_file).to receive(:raw_text?).and_return(false) end it 'returns a No Preview viewer' do expect(diff_file.simple_viewer).to be_a(DiffViewer::NoPreview) end end end describe '#rich_viewer' do let(:commit) { project.commit('2f63565e7aac07bcdadb654e253078b727143ec4') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/images/6049019_460s.jpg') } context 'when the diff file has a matching viewer' do context 'when the diff file content did not change' do before do allow(diff_file).to receive(:content_changed?).and_return(false) end it 'returns nil' do expect(diff_file.rich_viewer).to be_nil end end context 'when the diff file is not diffable' do before do allow(diff_file).to receive(:diffable?).and_return(false) end it 'returns nil' do expect(diff_file.rich_viewer).to be_nil end end context 'when the diff file old and new blob types are different' do before do allow(diff_file).to receive(:different_type?).and_return(true) end it 'returns nil' do expect(diff_file.rich_viewer).to be_nil end end context 'when the diff file has an external storage error' do before do allow(diff_file).to receive(:external_storage_error?).and_return(true) end it 'returns nil' do expect(diff_file.rich_viewer).to be_nil end end context 'when everything is right' do it 'returns the viewer' do expect(diff_file.rich_viewer).to be_a(DiffViewer::Image) end end end context 'when the diff file does not have a matching viewer' do let(:commit) { project.commit('570e7b2abdd848b95f2f578043fc23bd6f6fd24d') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/ruby/popen.rb') } it 'returns nil' do expect(diff_file.rich_viewer).to be_nil end end end describe '#rendered_as_text?' do context 'when the simple viewer is text-based' do let(:commit) { project.commit('570e7b2abdd848b95f2f578043fc23bd6f6fd24d') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/ruby/popen.rb') } context 'when ignoring errors' do context 'when the viewer has render errors' do before do diff_file.diff.too_large! end it 'returns true' do expect(diff_file.rendered_as_text?).to be_truthy end end context "when the viewer doesn't have render errors" do it 'returns true' do expect(diff_file.rendered_as_text?).to be_truthy end end end context 'when not ignoring errors' do context 'when the viewer has render errors' do before do diff_file.diff.too_large! end it 'returns false' do expect(diff_file.rendered_as_text?(ignore_errors: false)).to be_falsey end end context "when the viewer doesn't have render errors" do it 'returns true' do expect(diff_file.rendered_as_text?(ignore_errors: false)).to be_truthy end end end end context 'when the simple viewer is binary' do let(:commit) { project.commit('2f63565e7aac07bcdadb654e253078b727143ec4') } let(:diff_file) { commit.diffs.diff_file_with_new_path('files/images/6049019_460s.jpg') } it 'returns false' do expect(diff_file.rendered_as_text?).to be_falsey end end end context 'when neither blob exists' do let(:blank_diff_refs) { Gitlab::Diff::DiffRefs.new(base_sha: Gitlab::Git::BLANK_SHA, head_sha: Gitlab::Git::BLANK_SHA) } let(:diff_file) { described_class.new(diff, diff_refs: blank_diff_refs, repository: project.repository) } describe '#blob' do it 'returns a concrete nil so it can be used in boolean expressions' do actual = diff_file.blob && true expect(actual).to be_nil end end describe '#binary?' do it 'returns false' do expect(diff_file).not_to be_binary end end describe '#size' do it 'returns zero' do expect(diff_file.size).to be_zero end end end end