Pytest - 文件执行

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  简述

  在本章中，我们将学习如何执行单个测试文件和多个测试文件。我们已经有一个测试文件test_square.py创建的。创建一个新的测试文件test_compare.py使用以下代码 -

  
  def test_greater():
     num = 100
     assert num > 100
  def test_greater_equal():
     num = 100
     assert num >= 100
  def test_less():
     num = 100
     assert num < 200
  

  现在要从所有文件（这里有 2 个文件）运行所有测试，我们需要运行以下命令 -

  
  pytest -v
  

  上面的命令将从两者运行测试test_square.py和test_compare.py. 输出将按如下方式生成 -

  
  test_compare.py::test_greater FAILED
  test_compare.py::test_greater_equal PASSED
  test_compare.py::test_less PASSED
  test_square.py::test_sqrt PASSED
  test_square.py::testsquare FAILED
  ================================================ FAILURES 
  ================================================
  ______________________________________________ test_greater 
  ______________________________________________
     def test_greater():
     num = 100
  >  assert num > 100
  E  assert 100 > 100
  test_compare.py:3: AssertionError
  _______________________________________________ testsquare 
  _______________________________________________
     def testsquare():
     num = 7
  >  assert 7*7 == 40
  E  assert (7 * 7) == 40
  test_square.py:9: AssertionError
  =================================== 2 failed, 3 passed in 0.07 seconds 
  ===================================
  

  要从特定文件执行测试，请使用以下语法 -

  
  pytest <filename> -v
  

  现在，运行以下命令 -

  
  pytest test_compare.py -v
  

  上面的命令将只从文件中执行测试test_compare.py.我们的结果将是 -

  
  test_compare.py::test_greater FAILED
  test_compare.py::test_greater_equal PASSED
  test_compare.py::test_less PASSED
  ============================================== FAILURES 
  ==============================================
  ____________________________________________ test_greater 
  ____________________________________________
     def test_greater():
     num = 100
  >  assert num > 100
  E  assert 100 > 100
  test_compare.py:3: AssertionError
  ================================= 1 failed, 2 passed in 0.04 seconds 
  =================================