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# frozen_string_literal: true
require 'fast_spec_helper'
RSpec.describe Gitlab::WordDiff::PositionsCounter do
subject(:counter) { described_class.new }
describe 'Initial state' do
it 'starts with predefined values' do
expect(counter.pos_old).to eq(1)
expect(counter.pos_new).to eq(1)
expect(counter.line_obj_index).to eq(0)
end
end
describe '#increase_pos_num' do
it 'increases old and new positions' do
expect { counter.increase_pos_num }.to change { counter.pos_old }.from(1).to(2)
.and change { counter.pos_new }.from(1).to(2)
end
end
describe '#increase_obj_index' do
it 'increases object index' do
expect { counter.increase_obj_index }.to change { counter.line_obj_index }.from(0).to(1)
end
end
describe '#set_pos_num' do
it 'sets old and new positions' do
expect { counter.set_pos_num(old: 10, new: 12) }.to change { counter.pos_old }.from(1).to(10)
.and change { counter.pos_new }.from(1).to(12)
end
end
end
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