require 'spec_helper' describe Uniquify do let(:uniquify) { described_class.new } describe "#string" do it 'returns the given string if it does not exist' do result = uniquify.string('test_string') { |s| false } expect(result).to eq('test_string') end it 'returns the given string with a counter attached if the string exists' do result = uniquify.string('test_string') { |s| s == 'test_string' } expect(result).to eq('test_string1') end it 'increments the counter for each candidate string that also exists' do result = uniquify.string('test_string') { |s| s == 'test_string' || s == 'test_string1' } expect(result).to eq('test_string2') end it 'allows passing in a base function that defines the location of the counter' do result = uniquify.string(-> (counter) { "test_#{counter}_string" }) do |s| s == 'test__string' end expect(result).to eq('test_1_string') end end end