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Alex Bilbie:
Setup Jenkins and test a PHP project
April 20, 2015 @ 10:14:32

Alex Bilbie has posted a new tutorial to his site showing you how to set up Jenkins to test a PHP project. Jenkins is a popular automated build tool that can be used to do helpful things like automatically run unit tests and execute other tasks when code changes happen (or on an automated schedule).

After a chat with some other developers on Twitter the other day I offered to write a tutorial on how to setup Jenkins from scratch and create a job to test a PHP project. For this tutorial I'm going to use a Digital Ocean droplet (get $10 free credit with this link) but you can use a server from anywhere. Once I've installed and setup Jenkins I'm going to create a job to test my Proton framework.

He walks you through the setup of the server (Ubuntu running on a Digital Ocean instance) and the commands you'll need to get the required tools installed, including Jenkins. He configures Nginx to work as a proxy for the Jenkins installation (config included) and how to secure the installation. This is done via a GitHub OAuth connection and plugin. He helps you get Composer installed, an SSH in place for committing back to GitHub and creating a first job. He also includes a listing of several helpful tools that can be used to test your scripts and applications to provide more detail and better quality to the resulting code.

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jenkins test setup project tutorial digitalocean ubuntu

Link: http://alexbilbie.com/2015/04/setting-up-jenkins/

SitePoint PHP Blog:
Integrate Elasticsearch with Silex
April 13, 2015 @ 08:38:55

The SitePoint PHP blog has continued their look at integrating Elasticsearch into a simple Silex-based PHP application. In this latest part of the series (part two) they move away from the full Drupal example in part one and go a bit more simple and create a basic site to show a node's detail (content and title).

In the previous article I started exploring the integration between Drupal 7 and the Elasticsearch engine. The goal was to see how we can combine these open source technologies to achieve a high performance application that uses the best of both worlds. [...] We'll now create a small Silex application that reads data straight from Elasticsearch and returns it to the user.

Using Silex and the same Elasticsearch PHP SDK they create this simple site. The tutorial walks you through the installation of both tools, the configuration of the Elasticsearch client and creating the controllers to respond to the view requests. They also show how to use the Twig templating engine to render the results as a simple page containing the node title, any images attached to it and the body content. The tutorial ends with a brief mention of how this same data could also be rendered as JSON output with a different view handler.

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silex tutorial elasticsearch simple twig template json node drupal

Link: http://www.sitepoint.com/integrate-elasticsearch-silex/

Full Stack Radio:
13 Phil Sturgeon - Designing and Testing APIs, Go and PHP 7
April 06, 2015 @ 08:58:54

The Full Stack radio podcast has posted their thirteenth episode with guest Phil Sturgeon. In this latest show they talk about designing APIs, Go and PHP 7.

n this episode, Adam talks to Philip J. Sturgeon about designing and testing APIs at Ride. They also talk about building microservices with Go, and some of the new features coming in PHP 7.

You can listen to this latest episode either through the audio player in the post or by downloading the mp3 of the episode for listening at your leisure. Be sure to subscribe to their feed if you enjoy the episode too!

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fullstackradio philsturgeon api go php7 podcast deign test

Link: http://fullstackradio.com/episodes/13/

Evert Pot:
An XML library for PHP you may not hate.
April 02, 2015 @ 11:13:55

Evert Pot has posted about an XML library you may not hate, the sabre/xml library.

If you are writing or consuming API's in PHP, chances are that you need to work with XML. In some cases you may even prefer it. You may have started with SimpleXML and after a while switched to using the DOM after realizing SimpleXML is really not that simple if you strictly use xml namespaces everywhere.

For writing XML, you may have found that using the DOM requires far too much code, or you may simply generate your XML by echoing strings, knowing that it may not be the best idea. sabre/xml hopes to solve your issues, by wrapping XMLReader and XMLWriter, and providing standard design patterns.

He includes some example code showing how it works, extending the XMLReader/Writer functionality with a simplified interface. He includes examples of both writing a new XML file or reading in and working with the contents of a given one. He does point out one issue, though - the library cannot really read in XML contents, modify it and send it back out (it's a "single pass" system). He wraps up the post talking about the various interfaces and elements in the library and some of the overall benefits it provides.

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xml library xmlreader xmlwriter interface simple

Link: http://evertpot.com/an-xml-library-you-may-not-hate/

Cody Kennedy-Darby:
Testing Your Current Code Against PHP7 Or HHVM
April 01, 2015 @ 08:49:11

On Medium.com Cory Kennedy-Darby has a quick post showing you how you can test your current code against the latest versions of PHP 7 with the help of DUnit.

DUnit (dee-unit) makes your life easier by allowing you to run your unit tests on different versions of PHP or HHVM. Different versions are possible by using Docker containers. Thanks to @danbruce each of the Docker containers are only, ~35 MB in size. [...] PHP7 isn't that far away. In fact, it is scheduled for release in ~8 months in November. Now is the perfect time to start testing your code against PHP7 nightly.

He starts with a few reasons you might want to test your code and things you can do to start "thinking forward" to when it is released. He then shows you how to install DUnit (more detail here) and use it to test on both PHP 7 and HHVM builds.

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nightly test unittest build dunit docker container php7 hhvm

Link: https://medium.com/@ckdarby/testing-your-current-code-against-php7-or-hhvm-2f0ab059af78

Rob Allen:
Building and testing the upcoming PHP7
March 30, 2015 @ 10:14:08

Rob Allen has posted a guide to building and testing PHP 7, the next upcoming major build of the PHP language (released sometime later this year).

The GoPHP7-ext project aims to ensure that all the known PHP extensions out there work with the upcoming PHP 7. This is non-trivial as some significant changes have occurred in the core PHP engine (related to performance) that mean that extensions need to be updated. In order to help out (and prepare my own PHP code for PHP 7!), I needed the latest version of PHP7 working in a vagrant VM. Fortunately Rasmus has created a such a VM called php7dev, so let's start there.

He walks you through the process of grabbing the latest version of the virtual machine and set it up as a Vagrant VM instance. He talks about the different PHP versions contained in the VM and how to update PHP 7 to the latest pre-release version. Finally he talks about building an extension on the VM (he uses the apfd extension) and how to configure the VM to be able to test your own code too.

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Link: http://akrabat.com/building-and-testing-php7/

Freek Lijten:
Testing PHP extensions - what makes a good test
March 23, 2015 @ 09:52:58

Freek Lijten has a new post today continuing his look at the world of PHP extensions and focusing in on testing this time. He hopes to answer the question of what makes a good, effective set of tests to help increase the stability and quality of the extensions you write.

In my previous blog I took you through the process of getting PHP and extensions compiled, generating code coverage and running tests. What I did not talk about was what makes a good test. I hope to correct on this by adding this post and going into more detail on the actual writing of tests itself.

Using the same extension as before (enchant) he goes through the addition of a test for the enchant_dict_add_to_session function. He start by showing how much the function is currently tested (hint: none) and code coverage. He points out that 100% coverage is just one metric in a set that should be considered and not the final goal. He shares a simple test for the function that checks to see if a certain word exists in a dictionary. The coverage report shows all lines being executed, but there's a lot not tested, at least conceptually. He shows how to test "the spirit" of the function with additional tests for non-existent words, spell checking and if a word is not in the dictionary at all. PHP example code shows these tests kinds of tests to illustrate the steps he's talking about.

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test extension phpt spirit codecoverage metric goal

Link: http://www.freeklijten.nl/home/2015/03/22/Testing-PHP-extensions-what-makes-a-good-test

Stephan Hochdörfer:
Running PHPUnit via Phing on HHVM
February 26, 2015 @ 09:16:58

Stephan Hochdörfer has a quick post showing how he has PHPunit up and working on an HHVM instance. His problem was that the tests were actually executing using the "php" binary, not the HHVM one.

For quite some time we run the unit tests for our libs and tools against PHP and HHVM, at least that is what I thought up to now. As it turns out I missed a minor detail. [...] What happens now is that Phing is executed via HHVM but PHPUnit will still be executed via the PHP binary because the PHPUnit shell script will look for the php binary in the PATH configuration. Since we run HHVM side-by-side with PHP on our Jenkins build nodes I was not able to point /usr/bin/php to /usr/bin/hhvm - which would be the easiest and cleanest solution. I

He shares the workaround he created, creating a symbolic link between the hhvm and php binaries and then executing the Phing task to run the tests. This is being run via Jenkins and uses it's "WORKSPACE" as a container so the main "php" binary isn't overwritten.

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hhvm phpunit test unittest execute binary path jenkins phing task

Link: https://blog.bitexpert.de/blog/running-phpunit-via-phing-on-hhvm/

NetTuts.com:
Design Patterns The Simple Factory Pattern
January 27, 2015 @ 11:53:20

NetTuts.com has posted the next part of their series focusing on design patterns (and more specifically implementing them in PHP). In this latest post they look at a simple version of the Factory design pattern.

When you think of a factory, what comes to mind? For me, it's a place where things are created - that is, it's a centralized placed where things are produced. Later, the delivery of said products are done by the factory based on an order. Let's say that you're requesting a car. A factory will create one based on the specifications of the work order and will then deliver it once it's complete. Just as their real world counterparts, a software factory (that is, software that implements the factory design pattern), is an object that is responsible for creating and delivering other objects based on incoming parameters.

They mention the three different versions of the factory pattern but focus in on the simplest one (hence the "simple" in the title). They continue on with the car example, showing how to use a simple factory (a "carFactory") to build an instance of the "Car" class based on different classes of car types. The object is constructed when a "build" method is called with the type.

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designpattern simple factory car type example tutorial introduction

Link: http://code.tutsplus.com/tutorials/design-patterns-the-simple-factory-pattern--cms-22345

Dave Marshall:
Probing Test Suite Quality with Mutation Testing
January 08, 2015 @ 12:09:42

In this recent post to his site Dave Marshall looks at a method for evaluating the overall quality of your suite of unit tests with help from mutation testing.

100% code coverage should never really be a goal. [...] I feel pursuing 100% coverage in a PHP project is a particularly poor idea as our tooling generally only provides Line Coverage. [...] There are more reasonable coverage metrics to use to measure the quality of a test suite. Sebastian Bergmann and Derick Rethans are working hard on bringing some of these options to us, but for now we're limited to line coverage.

He talks about the difference between line, branch and condition coverage types (with code examples) and which allows for more effective and quality tests to be written. He then talks about the results of an experiment to achieve 100% coverage on the Router component in the Aura project. He found the problem using mutation testing - changing values in the production code to make sure the tests break. He also links over to a new mutation testing tool that's been released to help with this kind of thing, humbug, and some of the results it can report.

Mutation testing is a great thing to have a grasp of in theory, but it's not particularly easy to practice. The tools are very hard to write and then their output is often hard to understand or interpret effectively. I wouldn't recommend practicing with mutation testing on a regular basis, but it's certainly worth considering on the odd occasion.
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test suite quality mutation testing unittest coverage

Link: http://davedevelopment.co.uk/2015/01/07/probing-test-suite-quality-with-mutation-testing.html


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