85 lines
1.8 KiB
Ruby
85 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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require 'fast_spec_helper'
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RSpec.describe Gitlab::Diff::PairSelector do
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subject(:selector) { described_class.new(lines) }
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describe '#to_a' do
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subject { selector.to_a }
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let(:lines) { diff.lines }
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let(:diff) do
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<<-EOF.strip_heredoc
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class Test # 0
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- def initialize(test = true) # 1
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+ def initialize(test = false) # 2
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@test = test # 3
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- if true # 4
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- @foo = "bar" # 5
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+ unless false # 6
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+ @foo = "baz" # 7
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end
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end
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end
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EOF
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end
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it 'finds all pairs' do
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is_expected.to match_array([[1, 2], [4, 6], [5, 7]])
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end
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context 'when there are empty lines' do
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let(:lines) { ['- bar', '+ baz', ''] }
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it { expect { subject }.not_to raise_error }
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end
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context 'when there are only removals' do
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let(:diff) do
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<<-EOF.strip_heredoc
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- class Test
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- def initialize(test = true)
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- end
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- end
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EOF
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end
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it 'returns empty collection' do
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is_expected.to eq([])
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end
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end
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context 'when there are only additions' do
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let(:diff) do
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<<-EOF.strip_heredoc
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+ class Test
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+ def initialize(test = true)
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+ end
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+ end
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EOF
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end
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it 'returns empty collection' do
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is_expected.to eq([])
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end
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end
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context 'when there are no changes' do
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let(:diff) do
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<<-EOF.strip_heredoc
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class Test
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def initialize(test = true)
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end
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end
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EOF
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end
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it 'returns empty collection' do
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is_expected.to eq([])
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end
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end
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end
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end
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