# PyTest тип мануал
#### Для включения работы print внутри тестов необходимо добавить флаг -s

import pytest
from time import time

start: float

# тестирование в виде фукнций
def setup():
    global start
    start = time()
    print("\nbasic setup into module")


def teardown():
    global start
    print("Время выполнение теста: ", time() - start)
    print("\nbasic teardown into module")


def setup_module(module):
    print("\nmodule setup")


def teardown_module(module):
    print("\nmodule teardown")


def setup_function(function):
    print("\nfunction setup")


def teardown_function(function):
    print("\nfunction teardown")


def test_numbers_3_4():
    print("\ntest 3*4")
    assert 3 * 4 == 12


def test_strings_a_3():
    print("\ntest a*3")
    assert 'a' * 3 == 'aaa'

# тестирование в виде класса
class TestUM:
    def setup(self):
        print("\nbasic setup into class")

    def teardown(self):
        print("\nbasic teardown into class")

    def setup_class(cls):
        print("\nclass setup")

    def teardown_class(cls):
        print("\nclass teardown")

    def setup_method(self, method):
        print("\nmethod setup")

    def teardown_method(self, method):
        print("\nmethod teardown")

    def test_numbers_5_6(self):
        print("\ntest 5*6")
        assert 5 * 6 == 30

Output:

Testing started at 12:15 ...
C:\Users\rcsko\AppData\Local\Programs\Python\Python38-32\python.exe "C:\Program Files\JetBrains\PyCharm 2019.3.3\plugins\python\helpers\pycharm\_jb_pytest_runner.py" --path E:/DEV/python/sandbox/tests/test_classes.py -- -s
Launching pytest with arguments -s E:/DEV/python/sandbox/tests/test_classes.py in E:\DEV\python\sandbox\tests

============================= test session starts =============================
platform win32 -- Python 3.8.3, pytest-7.2.1, pluggy-1.0.0 -- C:\Users\rcsko\AppData\Local\Programs\Python\Python38-32\python.exe
cachedir: .pytest_cache
rootdir: E:\DEV\python\sandbox\tests
collecting ... collected 3 items

test_classes.py::test_numbers_3_4 
module setup

function setup

test 3*4
PASSED
function teardown

test_classes.py::test_strings_a_3 
function setup

test a*3
PASSED
function teardown

test_classes.py::TestUM::test_numbers_5_6 
class setup

method setup

test 5*6
PASSED
method teardown

class teardown

module teardown


============================== 3 passed in 0.01s ==============================

Process finished with exit code 0

### Фикстуры
Фикстуры набор методов расширяющих окружение PyTest (только моя интерпритация)

import pytest


@pytest.fixture()
def resource_setup(request):
    print("\nresource_setup")

    def resource_teardown():
        print("\nresource_teardown")

    request.addfinalizer(resource_teardown)


def test_1_that_needs_resource(resource_setup):
    print("\ntest_1_that_needs_resource")


def test_2_that_does_not():
    print("\ntest_2_that_does_not")


def test_3_that_does_again(resource_setup):
    print("\ntest_3_that_does_again")

output:

Testing started at 12:22 ...
C:\Users\rcsko\AppData\Local\Programs\Python\Python38-32\python.exe "C:\Program Files\JetBrains\PyCharm 2019.3.3\plugins\python\helpers\pycharm\_jb_pytest_runner.py" --path E:/DEV/python/sandbox/tests/test_fixture.py
Launching pytest with arguments E:/DEV/python/sandbox/tests/test_fixture.py in E:\DEV\python\sandbox\tests

============================= test session starts =============================
platform win32 -- Python 3.8.3, pytest-7.2.1, pluggy-1.0.0 -- C:\Users\rcsko\AppData\Local\Programs\Python\Python38-32\python.exe
cachedir: .pytest_cache
rootdir: E:\DEV\python\sandbox\tests
collecting ... collected 3 items

test_fixture.py::test_1_that_needs_resource 
resource_setup
PASSED                       [ 33%]
test_1_that_needs_resource

resource_teardown

test_fixture.py::test_2_that_does_not PASSED                             [ 66%]
test_2_that_does_not

test_fixture.py::test_3_that_does_again 
resource_setup
PASSED                           [100%]
test_3_that_does_again

resource_teardown


============================== 3 passed in 0.02s ==============================

Process finished with exit code 0