require 'spec_helper' describe DiscussionOnDiff do subject { create(:diff_note_on_merge_request, line_number: 18).to_discussion } describe "#truncated_diff_lines" do let(:truncated_lines) { subject.truncated_diff_lines } context "when diff is greater than allowed number of truncated diff lines " do it "returns fewer lines" do expect(subject.diff_lines.count).to be > DiffDiscussion::NUMBER_OF_TRUNCATED_DIFF_LINES expect(truncated_lines.count).to be <= DiffDiscussion::NUMBER_OF_TRUNCATED_DIFF_LINES end end context "when some diff lines are meta" do it "returns no meta lines" do expect(subject.diff_lines).to include(be_meta) expect(truncated_lines).not_to include(be_meta) end end context "when the diff line does not exist on a legacy diff note" do it "returns an empty array" do legacy_note = LegacyDiffNote.new allow(subject).to receive(:first_note).and_return(legacy_note) expect(truncated_lines).to eq([]) end end end describe '#line_code_in_diffs' do context 'when the discussion is active in the diff' do let(:diff_refs) { subject.position.diff_refs } it 'returns the current line code' do expect(subject.line_code_in_diffs(diff_refs)).to eq(subject.line_code) end end context 'when the discussion was created in the diff' do let(:diff_refs) { subject.original_position.diff_refs } it 'returns the original line code' do expect(subject.line_code_in_diffs(diff_refs)).to eq(subject.original_line_code) end end context 'when the discussion is unrelated to the diff' do let(:diff_refs) { subject.project.commit(RepoHelpers.sample_commit.id).diff_refs } it 'returns nil' do expect(subject.line_code_in_diffs(diff_refs)).to be_nil end end end end