Pytest 简明教程

Pytest - File Execution

在本章中，我们将了解如何执行单个测试文件和多个测试文件。我们已经创建了测试文件 test_square.py 。使用以下代码创建一个新的测试文件 test_compare.py -

In this chapter, we will learn how to execute single test file and multiple test files. We already have a test file test_square.py created. Create a new test file test_compare.py with the following code −

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（此处为 2 个文件）运行所有测试，我们需要运行以下命令 -

Now to run all the tests from all the files (2 files here) we need to run the following command −

pytest -v

以上命令将从 test_square.py 和 test_compare.py 运行测试。输出将如下生成 -

The above command will run tests from both test_square.py and test_compare.py. The output will be generated as follows −

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 -

To execute the tests from a specific file, use the following syntax −

pytest <filename> -v

现在，运行以下命令 -

Now, run the following command −

pytest test_compare.py -v

以上命令将仅从文件 test_compare.py. 执行测试我们的结果将是 -

The above command will execute the tests only from file test_compare.py. Our result will be −

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
=================================