title: Python binance client.create_test_order returning nothing with no error
body: <p>I'm trying to use the python-binance api to trade Ethereum, whilst developing the code I've been using the <code>create_test_order</code> function so that I'm not costing myself money to run tests.</p>
  <p>The issue I'm getting however is that the function doesn't seem to be returning anything at all:</p>
  <pre><code>try:
      avg_price = float(client.get_avg_price(symbol=&quot;ETHGBP&quot;)['price'])
      logging.info(f&quot;Test Buy at {avg_price}&quot;)
      order = client.create_test_order(
              symbol=&quot;ETHGBP&quot;,
              side=SIDE_BUY,
              type=ORDER_TYPE_LIMIT,
              timeInForce=TIME_IN_FORCE_GTC,
              quantity=100,
              price=&quot;{:.2f}&quot;.format(float(avg_price)))
      logging.info(order)
  except Exception as e:
      logging.error(f&quot;Exception occurred: {e}&quot;, exc_info=True)
      quit()
  </code></pre>
  <p>This is the output I'm getting:</p>
  <pre><code>travis_1  | 2021-05-27 15:08:02,617 - root - INFO - Test Buy at 2003.53136248
  travis_1  | 2021-05-27 15:08:02,852 - root - INFO - {}
  </code></pre>
  <p>I've been following this guide through, and I was expecting the returned order to have something in it, but it's not: <a href="https://algotrading101.com/learn/binance-python-api-guide/" rel="nofollow noreferrer">https://algotrading101.com/learn/binance-python-api-guide/</a></p>
  <p>I'm also confused that it's returning nothing, but no exception is being raised.</p>
  <p>Any ideas where I'm going wrong.</p>