require 'spec_helper'

describe Stairs::Util::CLI do
  subject { described_class }

  describe '.get' do
    it 'outputs the prompt to screen' do
      output = follow_prompts('test') { subject.get('itefeffe') }
      expect(output).to include 'itefeffe'
    end

    it 'collects and returns trimmed input' do
      follow_prompts 'test' do
        expect(subject.get('it')).to eq 'test'
      end
    end

    it 'returns nil for empty input' do
      follow_prompts '' do
        expect(subject.get('it')).to eq nil
      end
    end
  end

  describe '.collect' do
    it 'returns the user provided input' do
      follow_prompts 'test' do
        expect(subject.collect('itefeffe')).to eq 'test'
      end
    end

    context 'required' do
      it 'repeatedly prompts until a non-empty value is received' do
        follow_prompts '', '', '', 'finally' do
          expect(subject.collect('a value')).to eq 'finally'
        end
      end
    end

    context 'not required' do
      it 'returns nil for empty input' do
        follow_prompts '' do
          expect(subject.collect('gimme', required: false)).to eq nil
        end
      end
    end

    context 'with custom validation block' do
      it 'repeatedly prompts until a valid value is received' do
        follow_prompts '', '', 'wrong', 'right' do
          response = subject.collect('a value') { |v, _i| v == 'right' }
          expect(response).to eq 'right'
        end
      end
    end
  end
end