Pytest automated testing framework setup and teardown

Pytest - setup 和 teardown

• Executing use cases must require some preconditions or post operations, such as pre-user login, post-clearing data and other operations;

• unittest provides two pre-positions (setup, setupClass) and two post-positions (teardown, teardownClass);

• In contrast, pytest provides ten setup  sum  teardown methods:

  • Module level: setup_module, teardown_module

  • Function level: setup_function, teardown_function, methods not in the class

  • Class level: setup_class, teardown_class

  • Method level: setup_method, teardown_method

  • Use case level: setup, teardown

test_py.py

	import pytest
	def setup_module():
	print("\n！！！！ setup_module > 整个.py模块开始前只执行一次:打开浏览器/获取cookie ！！！！")
	def teardown_module():
	print("！！！！ teardown_module > 整个.py模块结束后只执行一次:关闭浏览器 ！！！！")
	def setup_function():
	print("\n### setup_function > 每个函数级别用例开始前都执行 ###")
	def teardown_function():
	print("### teardown_function > 每个函数级别用例结束后都执行 ###")
	def test_one():
	print("test case 1")
	def test_two():
	print("test case 2")
	class TestCase():
	def setup_class(self):
	print("\n^^^ setup_class > 整个测试类开始前只执行一次 ^^^")
	def teardown_class(self):
	print("^^^ teardown_class > 整个测试类结束后只执行一次 ^^^")
	def setup_method(self):
	print("\n=== setup_method > 类里面每个用例执行前都会执行 ===")
	def teardown_method(self):
	print("=== teardown_method > 类里面每个用例结束后都会执行 ===")
	def setup(self):
	print("--- setup > 类里面每个用例执行前都会执行 ---")
	def teardown(self):
	print("--- teardown > 类里面每个用例结束后都会执行 ---")
	def test_three(self):
	print("test case 3")
	def test_four(self):
	print("test case 4")
	if __name__ == '__main__':
	pytest.main(["-q", "-s", "-ra", "test_py.py"])

• The execution results are as shown in the figure for each level (the order of explanation is from top to bottom, and the level is from low to high):

  • Yellow box: use case level [setup, teardown]

  • Orange box: method level [setup_method, teardown_method]

  • Blue box: class level [setup_class, teardown_class]

  • Green box: function level [setup_function, teardown_function]

  • Red box: module level [setup_module, teardown_module]