code: def test_qa_eval():
      happy = HappyQuestionAnswering(
          "DISTILBERT", "distilbert-base-cased-distilled-squad"
      )
      result = happy.eval("../data/qa/train-eval.csv")
      assert result.loss == approx(0.11738169193267822, 0.01)
  
file_path: happy-transformer/tests/test_qa.py
imports: from happytransformer.happy_question_answering import HappyQuestionAnswering, QATrainArgs, QAEvalArgs, QATestArgs
  import pytest
  from pytest import approx
  from tests import happy_qa
label_desc: Use image node_id 3 for calling a global function with example usage: test_qa_eval() without return types