title: Error - RSpec - expect method is escaping '\n'
body: <p>I would like to assert this expectation:</p>
  
  <pre><code>contas_csv = transacoes_decorator.converter_contas_para_csv
  expect(contas_csv).to eq('345,30000\n350,19500\n355,20000\n360,-31000\n')
  </code></pre>
  
  <p>I got this error:</p>
  
  <pre><code> expected: "345,30000\\n350,19500\\n355,20000\\n360,-31000\\n"
        got: "345,30000\n350,19500\n355,20000\n360,-31000\n"
  </code></pre>
  
  <p>I printed the <strong>contas_csv</strong> variable, and I got what I expected "345,30000\n350,19500\n355,20000\n360,-31000\n"</p>
  
  <p>But the RSpec is adding an extra '\' before the '\n'. Because of it, my test is failing.</p>
  
  <p>Someone can help me with that, please?</p>