python測試開發項目 --- 自動化測試框架pytest中文文檔

時間  2019-12-05
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自動化測試框架pytest教程python

項目簡介

這裏是python測試開發的平常記錄，主要涉及單元測試、安全測試、python基礎、性能測試等內容。mysql

項目地址：https://bitbucket.org/xurongzhong/small_python_daily_toolslinux

項目介紹

從oracle遷移數據到mysql

  • 代碼位置： db/oracle 文件：config.py transfer_db.pygit

  • 測試環境：CentOS release 6.6 (Final) 64 python2.7github

  • 運行依賴： python外部庫cx_Oracle、mysql-connector-pythonweb

  • 功能：遷移oracle數據到mysql，須要先行在mysql建立表。特別注意，有清空mysql表的動做。sql

python批量清空數據庫

  • 簡介：使用python批量清空數據庫，基於mysql python api和python標準庫configparser，實現可配置地批量清空mysql表。數據庫

  • 支持版本：python2.7/3.*api

  • 後期規劃：經過argparse支持指定配置文件，增長delete、truncate、rename等選項。

  • 代碼 db/mysql del_db.py db.conf

在oracle中插入假數據

  • 簡介：在oracle中插入假數據

  • 測試環境：CentOS release 6.6 (Final) 64 python2.7

  • 代碼 db/oracle oracle_add.py

簡介

pytest是強大的python單元測試框架。因爲python的膠水語言特性，實質上pytest在接口測試、自動化測試等方面也普遍使用。

  • 成熟全功能的Python測試工具

  • 靈活

    • 易學，有多種用法
    • assert語句斷言
    • traceback 和失敗斷言報告
    • 打印調試和測試執行期間能夠捕獲標準輸出

  • 適合簡單的單元測試到複雜的功能測試

    • 模塊化和參數化的平臺
    • 參數化的測試函數
    • 支持屬性
    • Skip和xfail處理失敗的用例
    • xdist插件分發測試給多個CPU
    • 不斷地從新運行失敗的測試
    • 靈活的Python測試發現

  • 集成

    • 多範式：能夠執行nose, unittest 和doctest風格的測試用例，甚至Django和trial。
    • 支持良好的集成實踐
    • 支持擴展的xUnit風格setup
    • 支持非python測試
    • 支持生成測試覆蓋率報告
    • 支持PEP8兼容的編碼風格

  • 擴展插件和定製系統：

    • 全部的收集，報告，運行方面都委派給hook函數
    • 定製能夠是每一個目錄，每一個項目或每一個PyPI上發佈的插件
    • 很容易添加命令行選項或定製現有的行爲
    • 很容易本身寫插件

    本節來源：http://pytest.org/latest/

交流：python開發自動化測試羣291184506 PythonJava單元白盒單元測試羣144081101 商務合做微信：pythontesting

英文原版書籍下載：https://bitbucket.org/xurongzhong/python-chinese-library/downloadss。

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python 2.7 中文教程及自動化測試介紹

使用Python學習selenium測試工具

性能測試藝術
Java單元測試之模擬利器-使用PowerMock進行Mock測試

入門基礎

使用和調用

  • python -m pytest調用：

    • python -m pytest [...] 效果和py.test [...] 同樣

  • 獲取版本，選項名，環境變量

    • py.test --version 看版本
    • py.test --fixtures 查看內置函數參數
    • py.test -h | --help 命令行和配置文件幫助

  • 失敗後中止執行

    • 首次失敗後中止執行：py.test -x
    • py.test --maxfail=2 兩次失敗以後中止執行

  • 執行選擇用例

    • py.test test_mod.py，執行模塊中的用例
    • py.test somepath，執行路徑中用例
    • py.test -k stringexpr，執行字符串表達式中的用例，好比"MyClass and not method""，選擇TestMyClass.test_something，排除了TestMyClass.test_method_simple。
    • py.test --pyargs pkg，導入pkg，使用其文件系統位置來查找和執行用例。執行pypkg目錄下的全部用例。
    • py.test test_mod.py::test_func  指定模塊和函數
    • py.test test_mod.py::TestClass::test_method 指定模塊和類及方法

  • 調試輸出：

    • py.test --showlocals 在traceback中顯示本地變量
    • py.test -l 在traceback中顯示本地變量（快捷方式）
    • py.test --tb=auto 默認格式，首尾爲long，其餘爲short
    • py.test --tb=long 詳細的traceback信息格式化形式
    • py.test --tb=native 標準庫格式化形式
    • py.test --tb=short 更短的traceback格式
    • py.test --tb=line 每一個錯誤一行
    • py.test --tb=no 無traceback
    • py.test --full-trace 最詳細的格式

  • 失敗時調用PDB (Python Debugger)：

Python帶有一個內置的Python調試器稱爲PDB。pytest能夠在命令行選項指定調用：

py.test --pdb

這將每次失敗時調用Python調試器。

py.test -x --pdb # 失敗時調用pdb，而後退出測試。 py.test --pdb - maxfail=3＃ 前3次失敗調用pdb。

異常信息保存在sys.last_value, sys.last_type和``sys.last_traceback，交互式狀況能夠調試：

>>> import sys
>>> sys.last_traceback.tb_lineno
42
>>> sys.last_value
AssertionError('assert result == "ok"',)
  • 設置斷點：
import pytest
def test_function():
    ...
    pytest.set_trace()    # invoke PDB debugger and tracing

2.0.0之前的版本中只有經過py.test-s禁用命令行捕捉才能夠進入pdb調試。2.0.0及之後版本在進入pdb調試時自動禁用輸出捕捉。

2.4.0 支持使用importpdb;pdb.set_trace()進入pdb。

  • Profiling測試執行時間：獲得最執行慢的10個測試：

py.test --durations=10

  • 建立JUnitXML格式的文件

建立Jenkins或其餘持續集成服務器的結果文件：

py.test --junitxml=path

  • record_xml_property

2.8新增

在xml文件中記錄額外信息

def test_function(record_xml_property):
    record_xml_property("example_key", 1)
    assert 0

效果以下：

<testcase classname="test_function" file="test_function.py" line="0" name="test_function" time="0.0009">
  <properties>
    <property name="example_key" value="1" />
  </properties>
</testcase>

試驗功能，與pytest-xdist不兼容，還有可能破壞模式驗證，與一些CI集成可能會有問題。

  • 建立resultlog格式的文件

要建立純文本的機器可讀的結果文件，用於PyPy-testweb展現等。

py.test --resultlog=path

  • 發送測試報告給在線pastebin服務

bpaste能夠爲你的文本生成url鏈接，下面爲建立每一個測試失敗建立一個url：

py.test --pastebin=failed

py.test --pastebin=all py.test --pastebin=failed -x　# 只發送一次

目前只支持：http://bpaste.net

  • 禁用插件

    py.test -p no:doctest

  • 在python代碼中調用pytest

    2.0新增　用exitcode代替了SystemExit。 pytest.main([’-x’, ’mytestdir’]) pytest.main("-x mytestdir")

    # 指定插件

    # content of myinvoke.py
import pytest
class MyPlugin:
    def pytest_sessionfinish(self):
        print("*** test run reporting finishing")

pytest.main("-qq", plugins=[MyPlugin()])

執行結果：

$ python myinvoke.py
*** test run reporting finishing

好的集成實踐

  • 使用虛擬環境

#virtualenv . New python executable in ./bin/python Installing setuptools, pip...done. root@AutoTest:[/data/code/python/pytest]#source bin/activate (pytest)root@AutoTest:[/data/code/python/pytest]#pip install pytest Downloading/unpacking pytest Downloading pytest-2.5.2.tar.gz (608kB): 608kB downloaded Running setup.py (path:/data/code/python/pytest/build/pytest/setup.py) egg_info for package pytest

Downloading/unpacking py>=1.4.20 (from pytest) Downloading py-1.4.22.tar.gz (189kB): 189kB downloaded Running setup.py (path:/data/code/python/pytest/build/py/setup.py) egg_info for package py

Installing collected packages: pytest, py Running setup.py install for pytest

Installing py.test-2.7 script to /data/code/python/pytest/bin
Installing py.test script to /data/code/python/pytest/bin

Running setup.py install for py

Successfully installed pytest py Cleaning up...

  • 測試佈局和導入規則

測試佈局的方法有2種。一爲放置在應用代碼以外，適用於有不少功能測試等狀況。

setup.py # your distutils/setuptools Python package metadata mypkg/ __init__.py appmodule.py tests/ test_app.py ...

二爲嵌入測試目錄到應用，當(單元)測試和應用之間的有直接關係，並想一塊兒發佈時有用：

setup.py # your distutils/setuptools Python package metadata mypkg/ __init__.py appmodule.py ... test/ test_app.py

部分使用pytest的項目

參見：Project examples

使用與實例

http://stackoverflow.com/search?q=pytest 上有不少例子。

斷言

簡單斷言

# content of test_assert1.py
def f():
    return 3

def test_function():
    assert f() == 4

執行結果：

$ py.test test_assert1.py
=================================================================================== test session starts ====================================================================================
platform linux -- Python 3.5.1+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /home/andrew/tmp, inifile: 
plugins: xdist-1.14
collected 1 items 

test_assert1.py F

========================================================================================= FAILURES =========================================================================================
______________________________________________________________________________________ test_function _______________________________________________________________________________________

    def test_function():
>       assert f() == 4
E       assert 3 == 4
E        +  where 3 = f()

test_assert1.py:6: AssertionError
================================================================================= 1 failed in 0.00 seconds =================================================================================
$

  • 異常斷言

import pytest

def test_zero_division():
    with pytest.raises(ZeroDivisionError):
        1 / 0

獲取異常信息：

def test_recursion_depth():
    with pytest.raises(RuntimeError) as excinfo:
        def f():
            f()
        f()
    assert 'maximum recursion' in str(excinfo.value)

xfail中也能夠指定異常類型：

import pytest

@pytest.mark.xfail(raises=NameError)
def test_f():
    f()

pytest.raises適用於故意產生異常，@pytest.mark.xfail適用於處理bug。

上下文比較

# content of test_assert2.py def test_set_comparison(): set1 = set("1308") set2 = set("8035") assert set1 == set2

執行結果：

# py.test test_assert2.py ================================================================================================= test session starts ========================================================================= platform linux2 -- Python 2.7.5 -- py-1.4.23 -- pytest-2.6.1 collected 1 items

test_assert2.py F

============================================================================== FAILURES ============================================================================== ________________________________________________________________________ test_set_comparison _________________________________________________________________________

def test\_set\_comparison():
    set1 = set("1308")
    set2 = set("8035")

> assert set1 == set2 E assert set(['0', '1', '3', '8']) == set(['0', '3', '5', '8']) E Extra items in the left set: E '1' E Extra items in the right set: E '5'

test_assert2.py:5: AssertionError ====================================================================== 1 failed in 0.01 seconds ======================================================================

自定義斷言比較

conftest.py

# content of conftest.py from test_foocompare import Foo def pytest_assertrepr_compare(op, left, right): if isinstance(left, Foo) and isinstance(right, Foo) and op == "==": return ['Comparing Foo instances:', 'vals: %s != %s' % (left.val, right.val)]

test_foocompare.py

# content of test_foocompare.py class Foo: def __init__(self, val): self.val = val

def test_compare(): f1 = Foo(1) f2 = Foo(2) assert f1 == f2

執行結果：

# py.test -q test_foocompare.py F ================================================================================================================ FAILURES ================================================================================================================= ______________________________________________________________________________________________________________ test_compare _______________________________________________________________________________________________________________

def test_compare():
    f1 = Foo(1)
    f2 = Foo(2)

> assert f1 == f2 E assert Comparing Foo instances: E vals: 1 != 2

test_foocompare.py:9: AssertionError 1 failed in 0.01 seconds

高級內省斷言

暫略，後面補上

failure_demo.py 結合斷言的使用，展現了多種錯誤報告：

https://github.com/alfredodeza/pytest/blob/master/doc/en/example/assertion/failure_demo.py

from py.test import raises
import py

def otherfunc(a,b):
    assert a==b

def somefunc(x,y):
    otherfunc(x,y)

def otherfunc_multi(a,b):
    assert (a ==
            b)

def test_generative(param1, param2):
    assert param1 * 2 < param2

def pytest_generate_tests(metafunc):
    if 'param1' in metafunc.fixturenames:
        metafunc.addcall(funcargs=dict(param1=3, param2=6))

class TestFailing(object):
    def test_simple(self):
        def f():
            return 42
        def g():
            return 43

        assert f() == g()

    def test_simple_multiline(self):
        otherfunc_multi(
                  42,
                  6*9)

    def test_not(self):
        def f():
            return 42
        assert not f()

class TestSpecialisedExplanations(object):
    def test_eq_text(self):
        assert 'spam' == 'eggs'

    def test_eq_similar_text(self):
        assert 'foo 1 bar' == 'foo 2 bar'

    def test_eq_multiline_text(self):
        assert 'foo\nspam\nbar' == 'foo\neggs\nbar'

    def test_eq_long_text(self):
        a = '1'*100 + 'a' + '2'*100
        b = '1'*100 + 'b' + '2'*100
        assert a == b

    def test_eq_long_text_multiline(self):
        a = '1\n'*100 + 'a' + '2\n'*100
        b = '1\n'*100 + 'b' + '2\n'*100
        assert a == b

    def test_eq_list(self):
        assert [0, 1, 2] == [0, 1, 3]

    def test_eq_list_long(self):
        a = [0]*100 + [1] + [3]*100
        b = [0]*100 + [2] + [3]*100
        assert a == b

    def test_eq_dict(self):
        assert {'a': 0, 'b': 1, 'c': 0} == {'a': 0, 'b': 2, 'd': 0}

    def test_eq_set(self):
        assert set([0, 10, 11, 12]) == set([0, 20, 21])

    def test_eq_longer_list(self):
        assert [1,2] == [1,2,3]

    def test_in_list(self):
        assert 1 in [0, 2, 3, 4, 5]

    def test_not_in_text_multiline(self):
        text = 'some multiline\ntext\nwhich\nincludes foo\nand a\ntail'
        assert 'foo' not in text

    def test_not_in_text_single(self):
        text = 'single foo line'
        assert 'foo' not in text

    def test_not_in_text_single_long(self):
        text = 'head ' * 50 + 'foo ' + 'tail ' * 20
        assert 'foo' not in text

    def test_not_in_text_single_long_term(self):
        text = 'head ' * 50 + 'f'*70 + 'tail ' * 20
        assert 'f'*70 not in text


def test_attribute():
    class Foo(object):
        b = 1
    i = Foo()
    assert i.b == 2


def test_attribute_instance():
    class Foo(object):
        b = 1
    assert Foo().b == 2


def test_attribute_failure():
    class Foo(object):
        def _get_b(self):
            raise Exception('Failed to get attrib')
        b = property(_get_b)
    i = Foo()
    assert i.b == 2


def test_attribute_multiple():
    class Foo(object):
        b = 1
    class Bar(object):
        b = 2
    assert Foo().b == Bar().b


def globf(x):
    return x+1

class TestRaises:
    def test_raises(self):
        s = 'qwe'
        raises(TypeError, "int(s)")

    def test_raises_doesnt(self):
        raises(IOError, "int('3')")

    def test_raise(self):
        raise ValueError("demo error")

    def test_tupleerror(self):
        a,b = [1]

    def test_reinterpret_fails_with_print_for_the_fun_of_it(self):
        l = [1,2,3]
        print ("l is %r" % l)
        a,b = l.pop()

    def test_some_error(self):
        if namenotexi:
            pass

    def func1(self):
        assert 41 == 42


# thanks to Matthew Scott for this test
def test_dynamic_compile_shows_nicely():
    src = 'def foo():\n assert 1 == 0\n'
    name = 'abc-123'
    module = py.std.imp.new_module(name)
    code = py.code.compile(src, name, 'exec')
    py.builtin.exec_(code, module.__dict__)
    py.std.sys.modules[name] = module
    module.foo()



class TestMoreErrors:
    def test_complex_error(self):
        def f():
            return 44
        def g():
            return 43
        somefunc(f(), g())

    def test_z1_unpack_error(self):
        l = []
        a,b  = l

    def test_z2_type_error(self):
        l = 3
        a,b  = l

    def test_startswith(self):
        s = "123"
        g = "456"
        assert s.startswith(g)

    def test_startswith_nested(self):
        def f():
            return "123"
        def g():
            return "456"
        assert f().startswith(g())

    def test_global_func(self):
        assert isinstance(globf(42), float)

    def test_instance(self):
        self.x = 6*7
        assert self.x != 42

    def test_compare(self):
        assert globf(10) < 5

    def test_try_finally(self):
        x = 1
        try:
            assert x == 0
        finally:
            x = 0

執行：

$ py.test test_failures.py 
=================================================================================== test session starts ====================================================================================
platform linux -- Python 3.5.1, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /iscsi_data1/data/code/python/pytest/doc/en, inifile: pytest.ini
collected 1 items 

test_failures.py .

================================================================================= 1 passed in 0.56 seconds =================================================================================
[root@public01 assertion]# py.test failure_demo.py 
=================================================================================== test session starts ====================================================================================
platform linux -- Python 3.5.1, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /iscsi_data1/data/code/python/pytest/doc/en, inifile: pytest.ini
collected 39 items 

failure_demo.py FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

========================================================================================= FAILURES =========================================================================================
____________________________________________________________________________________ test_generative[0] ____________________________________________________________________________________

param1 = 3, param2 = 6

    def test_generative(param1, param2):
>       assert param1 * 2 < param2
E       assert (3 * 2) < 6

failure_demo.py:15: AssertionError

餘下部分不作介紹，請以實際執行結果爲準。

基本模式和實例

命令行傳參數

下面函數中的cmdopt，須要從命令行讀取：

# content of test_sample.py
def test_answer(cmdopt):
    if cmdopt == "type1":
        print ("first")
    elif cmdopt == "type2":
        print ("second")
    assert 0 # to see what was printed

設置_conftest.py_

# content of conftest.py
import pytest

def pytest_addoption(parser):
    parser.addoption("--cmdopt", action="store", default="type1",
        help="my option: type1 or type2")

@pytest.fixture
def cmdopt(request):
    return request.config.getoption("--cmdopt")

執行：

$ py.test -q --cmdopt=type2
F
========================================================================================= FAILURES =========================================================================================
_______________________________________________________________________________________ test_answer ________________________________________________________________________________________

cmdopt = 'type2'

    def test_answer(cmdopt):
        if cmdopt == "type1":
            print ("first")
        elif cmdopt == "type2":
            print ("second")
>       assert 0 # to see what was printed
E       assert 0

test_sample.py:7: AssertionError
----------------------------------------------------------------------------------- Captured stdout call -----------------------------------------------------------------------------------
second
1 failed in 0.00 seconds

動態參數

# content of conftest.py
import sys
def pytest_cmdline_preparse(args):
    if 'xdist' in sys.modules: # pytest-xdist plugin
        import multiprocessing
        num = max(multiprocessing.cpu_count() / 2, 1)
        args[:] = ["-n", str(num)] + args

命令行忽略測試

下面用例，若是打了slow標籤，則會須要添加選項--runslow才能執行。

配置

# content of conftest.py

import pytest
def pytest_addoption(parser):
    parser.addoption("--runslow", action="store_true",
        help="run slow tests")

用例：

# content of test_module.py

import pytest


slow = pytest.mark.skipif(
    not pytest.config.getoption("--runslow"),
    reason="need --runslow option to run"
)


def test_func_fast():
    pass


@slow
def test_func_slow():
    pass

默認執行：

$ py.test -rs
=================================================================================== test session starts ====================================================================================
platform linux -- Python 3.5.1+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /home/andrew/tmp, inifile: 
plugins: xdist-1.14
collected 2 items 

test_module.py .s
================================================================================= short test summary info ==================================================================================
SKIP [1] test_module.py:15: need --runslow option to run

=========================================================================== 1 passed, 1 skipped in 0.01 seconds ============================================================================
$

指定標籤執行

$ py.test --runslow
=================================================================================== test session starts ====================================================================================
platform linux -- Python 3.5.1+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /home/andrew/tmp, inifile: 
plugins: xdist-1.14
collected 2 items 

test_module.py ..

================================================================================= 2 passed in 0.01 seconds =================================================================================
$

標籤

Fixture

python中經典的xunit風格的setup是2005年首先出如今pytest，後面被nose和unittest採用。建議優先使用fixture，由於它有依賴注入，更強大。

  • 模塊級別
def setup_module(module):
    """ setup any state specific to the execution of the given module."""

def teardown_module(module):
    """ teardown any state that was previously setup with a setup_module
    method.
    """
  • 類級別

​

@classmethod
def setup_class(cls):
    """ setup any state specific to the execution of the given class (which
    usually contains tests).
    """

@classmethod
def teardown_class(cls):
    """ teardown any state that was previously setup with a call to
    setup_class.
    """

​

  • 方法和函數級別

​

@classmethod
def setup_class(cls):
    """ setup any state specific to the execution of the given class (which
    usually contains tests).
    """

@classmethod
def teardown_class(cls):
    """ teardown any state that was previously setup with a call to
    setup_class.
    """

​ ​

def setup_function(function):
    """ setup any state tied to the execution of the given function.
    Invoked for every test function in the module.
    """

def teardown_function(function):
    """ teardown any state that was previously setup with a setup_function
    call.
    """

​

臨時目錄和文件

tmpdir fixture

tmpdir是py.path.local對象，提供了os.path等的方法。

test_tmpdir.py

# content of test_tmpdir.py
import os
def test_create_file(tmpdir):
    p = tmpdir.mkdir("sub").join("hello.txt")
    p.write("content")
    assert p.read() == "content"
    assert len(tmpdir.listdir()) == 1
    assert 0

執行結果：

$ py.test test_tmpdir.py
======================================================================= test session starts =======================================================================
platform linux -- Python 3.5.1+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /home/andrew/tmp/py_test, inifile: 
collected 1 items 

test_tmpdir.py F

============================================================================ FAILURES =============================================================================
________________________________________________________________________ test_create_file _________________________________________________________________________

tmpdir = local('/tmp/pytest-of-andrew/pytest-0/test_create_file0')

    def test_create_file(tmpdir):
        p = tmpdir.mkdir("sub").join("hello.txt")
        p.write("content")
        assert p.read() == "content"
        assert len(tmpdir.listdir()) == 1
>       assert 0
E       assert 0

test_tmpdir.py:8: AssertionError
==================================================================== 1 failed in 0.06 seconds =====================================================================
$

生成的目錄通常在系統臨時目錄下面，格式爲pytest-NUM，好比/tmp/pytest-of-andrew/pytest-0/test_create_file0，每次測試執行時NUM會增長，3個之前的目錄會清除。以下方式會指定爲其餘目錄：py.test --basetemp=mydir。

tmpdir_factory fixture

2.8新增

tmpdir_factory基於session，可建立任意臨時目錄。

例如，假設test suite須要大文件：

# contents of conftest.py
import pytest

@pytest.fixture(scope='session')
def image_file(tmpdir_factory):
    img = compute_expensive_image()
    fn = tmpdir_factory.mktemp('data').join('img.png')
    img.save(str(fn))
    return fn

# contents of test_image.py
def test_histogram(image_file):
    img = load_image(image_file)
    # compute and test histogram

相關方法：

TempdirFactory.``mktemp(basename, numbered=True)[source]

TempdirFactory.``getbasetemp()[source]

捕捉輸出

默認stdout/stderr/stdin捕捉行爲

默認捕捉stdout/stderr，若是test或者setup方法失敗，traceback會打印相關內容。

stdin爲null，讀取會報錯，由於自動化測試鮮有交互式輸入。

默認捕捉爲寫入到底層文件，能夠捕捉print語言輸出到test中的subprocess輸出。

設置捕捉

默認捕捉方式爲file descriptor (FD)級捕捉。捕捉全部到操做系統的1,2輸出。

syslevel級捕捉只捕捉python的sys.stdout和sys.stderr。

py.test -s            # disable all capturing
py.test --capture=sys # replace sys.stdout/stderr with in-mem files
py.test --capture=fd  # also point filedescriptors 1 and 2 to temp file

使用print進行調試　

默認捕捉stdout/stderr：

# content of test_module.py

def setup_function(function):
    print ("setting up %s" % function)

def test_func1():
    assert True

def test_func2():
    assert False

執行結果：

$ py.test test_module.py 
======================================================================= test session starts =======================================================================
platform linux -- Python 3.5.1+, pytest-2.9.2, py-1.4.31, pluggy-0.3.1
rootdir: /home/andrew/tmp/py_test, inifile: 
collected 2 items 

test_module.py .F

============================================================================ FAILURES =============================================================================
___________________________________________________________________________ test_func2 ____________________________________________________________________________

    def test_func2():
>       assert False
E       assert False

test_module.py:10: AssertionError
---------------------------------------------------------------------- Captured stdout setup ----------------------------------------------------------------------
setting up <function test_func2 at 0x7fdc31ed6048>
=============================================================== 1 failed, 1 passed in 0.11 seconds ================================================================
$
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