pytest Quick Start Guide

Other Books You May Enjoy

Final summary

Next steps

2016 Sprint

Getting involved

The pytest community

Converting unittest suites to pytest

Plugins

Fixtures

Marks and parametrization

Writing and running tests

Introduction

Overview of what we have learned

Wrapping Up

Summary

Migration strategy

Refactoring test utilities

Reusing test code with fixtures

Managing test hierarchies

Handling setup/teardown

Converting asserts with unitest2pytest

Pytest features in unittest subclasses

Using pytest as a test runner

Converting unittest suites to pytest

Summary

Honorable mentions

pytest-regressions

pytest-datadir

pytest-randomly

pytest-qt

pytest-annotate

pytest-timeout

pytest-cpp

pytest-html

pytest-selenium

docker-services

pytest-postgresql

pytest-tornado

pytest-trio

pytest-asyncio

pytest-flakes

pytest-django

pytest-mock

pytest-faulthandler

pytest-cov

pytest-xdist

An overview of assorted plugins

Installing plugins

Finding plugins

Finding and installing plugins

Plugins

Summary

Fixtures as test-supporting code

Prefer local imports in conftest files

Renaming fixtures

When to use fixtures as opposed to simple functions

Tips/discussion

request

Binary mode

capsys/capfd

How and where to patch

monkeypatch

tmpdir_factory

tmpdir

An overview of built-in fixtures

Using marks from fixtures

Parametrizing fixtures

@pytest.mark.usefixtures

Autouse

Scopes in action

Scopes

Sharing fixtures with conftest.py files

Composability

Setup/teardown

Enter fixtures

Introducing fixtures

Fixtures

Summary

Testing multiple implementations

Customizing test IDs

Applying marks to value sets

Enter @pytest.mark.parametrize

Parametrization

pytest.xfail

@pytest.mark.xfail

pytest.importorskip

pytest.skip

@pytest.mark.skipif

Built-in marks

Custom marks and pytest.ini

Applying marks to modules

Applying marks to classes

Running tests based on marks

Creating marks

Mark basics

Markers and Parametrization

Summary

Override options with -o/--override

Pick the right place by default: testpaths

Avoid recursing into directories: norecursedirs

Cache directory: cache_dir

Customizing a collection

Additional command-line: addopts

Configuration: pytest.ini

Extra test summary: -ra

Slow tests with --durations

--showlocals (-l)

--tb=no

--tb=line

--tb=native

--tb=short

--tb=long

Traceback modes and locals: --tb --showlocals

Capture methods with --capture

Disabling capturing with -s

Output capturing: -s and --capture

Last failed failed first: --lf --ff

Stop soon: -x --maxfail

Keyword expressions: -k

Useful command-line options

Tests separate from your code

Tests that accompany your code

Organizing files and packages

Comparing floating point numbers: pytest.approx

Checking warnings: pytest.warns

Checking exception messages

Checking exceptions: pytest.raises

How does pytest do it?

Dictionaries and sets

Lists

Text differences

Powerful asserts

Running tests

Writing and running tests

pip and virtualenv

Installing pytest

Writing and Running Tests

Summary

Why pytest?

A quick look at the unittest module

Why spend time writing tests?

Introducing pytest

Reviews

Get in touch

Conventions used

Download the example code files

To get the most out of this book

What this book covers

Who this book is for

Preface

Packt is searching for authors like you

About the reviewers

About the author

Contributors

Foreword

PacktPub.com

Why subscribe?

Packt Upsell

pytest Quick Start Guide

Copyright and Credits

Title Page

封面

封面

Title Page

Copyright and Credits

pytest Quick Start Guide

Packt Upsell

Why subscribe?

PacktPub.com

Foreword

Contributors

About the author

About the reviewers

Packt is searching for authors like you

Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Conventions used

Get in touch

Reviews

Introducing pytest

Why spend time writing tests?

A quick look at the unittest module

Why pytest?

Summary

Writing and Running Tests

Installing pytest

pip and virtualenv

Writing and running tests

Running tests

Powerful asserts

Text differences

Lists

Dictionaries and sets

How does pytest do it?

Checking exceptions: pytest.raises

Checking exception messages

Checking warnings: pytest.warns

Comparing floating point numbers: pytest.approx

Organizing files and packages

Tests that accompany your code

Tests separate from your code

Useful command-line options

Keyword expressions: -k

Stop soon: -x --maxfail

Last failed failed first: --lf --ff

Output capturing: -s and --capture

Disabling capturing with -s

Capture methods with --capture

Traceback modes and locals: --tb --showlocals

--tb=long

--tb=short

--tb=native

--tb=line

--tb=no

--showlocals (-l)

Slow tests with --durations

Extra test summary: -ra

Configuration: pytest.ini

Additional command-line: addopts

Customizing a collection

Cache directory: cache_dir

Avoid recursing into directories: norecursedirs

Pick the right place by default: testpaths

Override options with -o/--override

Summary

Markers and Parametrization

Mark basics

Creating marks

Running tests based on marks

Applying marks to classes

Applying marks to modules

Custom marks and pytest.ini

Built-in marks

@pytest.mark.skipif

pytest.skip

pytest.importorskip

@pytest.mark.xfail

pytest.xfail

Parametrization

Enter @pytest.mark.parametrize

Applying marks to value sets

Customizing test IDs

Testing multiple implementations

Summary

Fixtures

Introducing fixtures

Enter fixtures

Setup/teardown

Composability

Sharing fixtures with conftest.py files

Scopes

Scopes in action

Autouse

@pytest.mark.usefixtures

Parametrizing fixtures

Using marks from fixtures

An overview of built-in fixtures

tmpdir

tmpdir_factory

monkeypatch

How and where to patch

capsys/capfd

Binary mode

request

Tips/discussion

When to use fixtures as opposed to simple functions

Renaming fixtures

Prefer local imports in conftest files

Fixtures as test-supporting code

Summary

Plugins

Finding and installing plugins

Finding plugins

Installing plugins

An overview of assorted plugins

pytest-xdist

pytest-cov

pytest-faulthandler

pytest-mock

pytest-django

pytest-flakes

pytest-asyncio

pytest-trio

pytest-tornado

pytest-postgresql

docker-services

pytest-selenium

pytest-html

pytest-cpp

pytest-timeout

pytest-annotate

pytest-qt

pytest-randomly

pytest-datadir

pytest-regressions

Honorable mentions

Summary

Converting unittest suites to pytest

Using pytest as a test runner

Pytest features in unittest subclasses

Converting asserts with unitest2pytest

Handling setup/teardown

Managing test hierarchies

Reusing test code with fixtures

Refactoring test utilities

Migration strategy

Summary

Wrapping Up

Overview of what we have learned

Introduction

Writing and running tests

Marks and parametrization

Fixtures

Plugins

Converting unittest suites to pytest

The pytest community

Getting involved

2016 Sprint

Next steps

Final summary

Other Books You May Enjoy