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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Diff::InlineDiff do
describe '.for_lines' do
let(:diff) do
<<-EOF.strip_heredoc
class Test
- def initialize(test = true)
+ def initialize(test = false)
@test = test
- if true
- @foo = "bar"
+ unless false
+ @foo = "baz"
end
end
end
EOF
end
let(:subject) { described_class.for_lines(diff.lines) }
it 'finds all inline diffs' do
expect(subject[0]).to be_nil
expect(subject[1]).to eq([25..27])
expect(subject[2]).to eq([25..28])
expect(subject[3]).to be_nil
expect(subject[4]).to eq([5..10])
expect(subject[5]).to eq([17..17])
expect(subject[6]).to eq([5..15])
expect(subject[7]).to eq([17..17])
expect(subject[8]).to be_nil
end
it 'can handle unchanged empty lines' do
expect { described_class.for_lines(['- bar', '+ baz', '']) }.not_to raise_error
end
context 'when lines have multiple changes' do
let(:diff) do
<<~EOF
- Hello, how are you?
+ Hi, how are you doing?
EOF
end
let(:subject) { described_class.for_lines(diff.lines) }
it 'finds all inline diffs' do
expect(subject[0]).to eq([3..6])
expect(subject[1]).to eq([3..3, 17..22])
end
context 'when feature flag is disabled' do
before do
stub_feature_flags(improved_merge_diff_highlighting: false)
end
it 'finds all inline diffs' do
expect(subject[0]).to eq([3..19])
expect(subject[1]).to eq([3..22])
end
end
end
end
describe "#inline_diffs" do
let(:old_line) { "XXX def initialize(test = true)" }
let(:new_line) { "YYY def initialize(test = false)" }
let(:subject) { described_class.new(old_line, new_line, offset: 3).inline_diffs }
it "finds the inline diff" do
old_diffs, new_diffs = subject
expect(old_diffs).to eq([26..28])
expect(new_diffs).to eq([26..29])
end
end
end
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