44 lines
1.3 KiB
Ruby
44 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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describe Uniquify do
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let(:uniquify) { described_class.new }
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describe "#string" do
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it 'returns the given string if it does not exist' do
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result = uniquify.string('test_string') { |s| false }
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expect(result).to eq('test_string')
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end
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it 'returns the given string with a counter attached if the string exists' do
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result = uniquify.string('test_string') { |s| s == 'test_string' }
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expect(result).to eq('test_string1')
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end
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it 'increments the counter for each candidate string that also exists' do
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result = uniquify.string('test_string') { |s| s == 'test_string' || s == 'test_string1' }
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expect(result).to eq('test_string2')
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end
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it 'allows to pass an initial value for the counter' do
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start_counting_from = 2
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uniquify = described_class.new(start_counting_from)
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result = uniquify.string('test_string') { |s| s == 'test_string' }
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expect(result).to eq('test_string2')
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end
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it 'allows passing in a base function that defines the location of the counter' do
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result = uniquify.string(-> (counter) { "test_#{counter}_string" }) do |s|
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s == 'test__string'
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end
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expect(result).to eq('test_1_string')
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end
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end
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end
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