Test & Code - Python Testing & Development

The Travis Foundation. Interview with Laura GaetanoLinks and things we talked about:Travis FoundationOpen Source GrantsThe Foundation's support of Katrina Owen from exercism.ioExercism.ioRails Girls summer of codeDiversity TicketsConference supportSpeakerinnenPrompt

This is a small episode. I'm changing the name from the "Python Test Podcast" to "Test & Code". I just want to discuss the reasons behind this change, and take a peek at what's coming up in the future for this podcast. Links The Waterfall Model and "Managing the Development of Large Software Systems" Josh Kalderimis from Travis CI

An introduction to Lean Software Development This is a quick intro to the concepts of Lean Software Development. I'm starting a journey of trying to figure out how to apply lean principles to software development in the context of 2016/2017. Links Lean Software Development book by Mary & Tom Poppendieck wikipedia entry for Lean Software Development Patreon supporters of the show Talk Python to Me Podcast Python Jumpstart by Building 10 Apps - video course pytest sprint pytest.org pytest/tox indiegogo campaign

Interview with Josh Kalderimis from Travis CI. Josh is a co-founder and Chief Post-It Officer at Travis CI. Topics What is Continuous Integration, CI What is Travis CI Some history of the company travis-ci.org vs travis-ci.com and merging the two Enterprise and the importance of security Feature questions Travis vs Jenkins Travis notification through Slack Reporting history of Travis results Dealing with pytest results status other than pass/fail Capturing std out and stderr logging from tests Build artifacts Tox and Travis Using Selenium What does a Chief Post-It Officer do Differentiation between Travis and other CI options Using Slack to keep remote teams communicating well Travis team Funding open source projects Travis Foundation Rails Girls Summer of Code Open source grants Mustaches and beards Shite shirts New Zealand What does Team Periwinkle do Links Jeff Knupp's Open Sourcing a Python Project the Right Way Sven's blog post when Travis started Sven's mustache and Josh's beard Travis CI fo

Testing apps that use requests without using mock. Interview with Ian Cordasco (@sigmavirus24) Topics: Betamax - python library for replaying requests interactions for use in testing. requests github3.py Pycon 2015 talk: Ian Cordasco - Cutting Off the Internet: Testing Applications that Use Requests - PyCon 2015 Pytest and using Betamax with pytest fixtures The utility (or uselessness) of teaching programming with Java (My own rant mainly) Rackspace and Ian’s role at Rackspace and OpenStack Python Code Quality Authority: flake8, pep8, mccabe, pylint, astroid, … Static code analysis and what to use which tool when. Raymond Hettinger - Beyond PEP 8 -- Best practices for beautiful intelligible code - PyCon 2015 Links: Testing Python-Requests with Betamax Cutting Off the Internet: Testing Applications that Use Requests - PyCon 2015 github3.py requests Rackspace Openstack Python Code Quality Authority and documentation GitLab Raymond Hettinger - Beyond PEP 8 -- Best practices for beautiful intelligible cod

In this episode I interview Ned Batchelder. I know that coverage.py is very important to a lot of people to understand how much of their code is being covered by their test suites. Since I'm far from an expert on coverage, I asked Ned to discuss it on the show. I'm also quite a fan of Ned's 2014 PyCon talk "Getting Started Testing", so I definitely asked him about that. We also discuss edX, Python user groups, PyCon talks, and more. Some of what's covered (pun intended) in this episode: coverage.py types of coverage Line coverage branch coverage Behavior coverage Data coverage How Ned became the owner of coverage.py Running tests from coverage.py vs running coverage from test runner. edX what is it what Ned's role is Ned's blog Ned's PyCon 2014 talk "Getting Started Testing" Teaching testing and the difficulty of the classes being part of unittest fixtures package some of the difficulties of teaching unittest because of it's class based system. the history of classes in unittest coming from

How pytest, unittest, and nose deal with assertions. The job of the test framework to tell developers how and why their tests failed is a difficult job. In this episode I talk about assert helper functions and the 3 methods pytest uses to get around having users need to use assert helper functions.

Given-When-Then is borrowed from BDD and is my favorite structure for test case design. It doesn’t matter if you are using pytest, unittest, nose, or something completely different, this episode will help you write better tests. The Given-When-Then structure for test method/function development. How and why to utilize fixtures for your given or precondition code. Similarities with other structure discriptions. Setup-Test-Teardown Setup-Excercise-Verify-Teardown. Arrange-Act-Assert Preconditions-Trigger-Postconditions. Benefits Communicate the purpose of your test more clearly Focus your thinking while writing the test Make test writing faster Make it easier to re-use parts of your test Highlight the assumptions you are making about the test preconditions Highlight what outcomes you are expecting and testing against. Links discussed in the show: Mechanics of pytest, unittest, nose unittest fixture reference nose fixture reference pytest fixtures (series of posts starting here) pytest style fixture

Intro to Harry Percival, his background and story of how he got into TDD and ended up writing a bookComparing using unittest and pytest with applicability to testing django projects. Functional end to end testing with selenium.The django test client for middle level tests.test isolationdjango and isolated unit testsunit tests vs integration testsTesting done by the development team without an external QADouble loop TDD: Functional test first, then unit testsSpikes: investigations without testsHarry's experience with having a freely available web version of a book that is also intended to be sold.Update: Comment from Harry Percival on 19-Jan-2014 I might have been a bit down on unit tests vs functional tests in that "unit tests never fail comment". Not true at all, particularly as we've just been thru upgrading django on our core system, and the unit tests really saved our bacon on that one...LinksTest-Driven Development with PythonObey the Testing Goat - Harry's site dedicated to the book and related posts.Py

In today's podcast, I dodge the question of "What do you think of Agile?" by reading an essay from Dave Thomas

The waterfall model has been used and modified and changed and rebelled against since before I started programming. Waterfall such an important character in the story of software development that we should get to know it a better.

My experience with writing software comes from my experience: where I grew up, what eras I lived through, what my economical and geographical experiences have been, when I learned to code, and what projects I've worked on.

Setup and Teardown Benefits of Test Fixtures code reuse cleanup of resources errors vs failures focusing your thinking on what you are testing and what you are not scoping for efficiency Brief look at pytest named fixtures References pytest fixtures series pytest fixtures nuts & bolts pytest session scoped fixtures unittest fixtures nose fixtures mentioned in introduction nose fixture reference post how to run a single class

Setup and Teardown Benefits of Test Fixtures code reuse cleanup of resources errors vs failures focusing your thinking on what you are testing and what you are not scoping for efficiency Brief look at pytest named fixtures References pytest fixtures series pytest fixtures nuts & bolts pytest session scoped fixtures unittest fixtures nose fixtures mentioned in introduction nose fixture reference post

Answering a listener question. Why testing? What are the benefits? Why automated testing over manual testing? Why test first? Why do automated testing during development? Why test to the user level API? After describing my ideal test strategy and project, I list: Business related, practical benefits of testing Personal reasons to embrace testing Pragmatic, day to day, developer benefits of testing

I list my requirements for a framework and discuss how Pytest, Unittest, and Nose measure up to those requirements. Mentioned: pytest unittest nose delayed assert pytest-expect doctest I did the audio processing differently for this episode. Please let me know how it sounds, if there are any problems, etc.