1import pytest
2
3
4x = 1
5
6
7@pytest.fixture()
8def f1():
9    global x
10    x = 2
11    yield 15
12    x = 3
13
14
15def test_1():
16    assert x == 1
17
18
19def test_2(f1):
20    assert x == 2
21    assert f1 == 15
22
23
24def test_3():
25    assert x == 3
26