Perl Maven

Perl tutorials and courses

Modern Perl Web Frameworks

  • Mojolicious light-weight web framework with rainbows and unicorns.
  • Perl Dancer light-weight web framework to rock.
  • Catalyst The MVC web framework of Perl.
  • PSGI/Plack, the low-level superglue between Perl web application frameworks and web servers.
  • CGI, the Common Gateway Interface, for old-school web applications.

Object Oriented Perl

  • OOP, the classic way to write Object Oriented Perl code.
  • Moo, the Minimalist Object Oriented system for Perl.
  • Moose, the 'post modern' Object Oriented system for Perl.

Other Series

Projects and Collections

Code-Maven series

If you are a beginner, or would like to refresh your Perl programming knowledge, you can go over the Perl tutorial or watch the Beginner Perl Maven video course.

If you need to maintain a large piece of software written in Perl by other people in the last 5-10-15 years, that's a challenge. Especially if you did not get proper training in Perl. You are probably limited to a specific and old version of Perl. Check out, the Perl tutorial! You can probably skip the part about installing Perl, but the rest of the tutorial will be relevant for you.

Perl is often used in Test Automation. If you work in this field, or if you'd like to work in this field (it is much more fun to find bugs in other people's code than in yours :), then you can read the Perl tutorial and the series on Test Automation using Perl.

If you build new web applications - either privately or inside a company - you can start by reading the article comparing CGI, mod_perl and PSGI. From there you can go on reading the generic Perl tutorial or the articles on Mojolicious, Perl Dancer, Catalyst, PSGI/Plack, or even CGI, the Common Gateway Interface, for old-school web applications.

In the off chance you are interested in topics other than Perl, especially related to Test Automation, Continuous Integration, Continuous Deployment, DevOps, then you are welcome to check out the list of DevOps related training courses.

Recent Articles

Generate test expectations for the Markua parser

In every earlier test-case we created the Markua input file manually and then we created the expected DOM in JSON representation also manually.

When we implemented the parsing and testing of Markua resources we ran the tests first and then took the dump of the error message and used that to create the JSON representation of both the DOM and the error report. It was a bit of unnecessary manual work. After all we could convert the generated DOM to JSON. Look at it to verify that we really want that to be the expected results and then save it as the expected JSON.

How can we make this easier?

Generate test expectations for the Markua parser

Test coverage report with Devel::Cover for the Markua Parser

Coveralls indicates a test coverage of 96.88%, but it does not seem to take in account the branch and conditional coverage cases.

Let's see what does Devel::Cover on its own can tell us.

Test coverage report with Devel::Cover for the Markua Parser

Markua resources: Include files

The next Markua element we'd like to be able to parse are used to include files. The same format can be used to include text files in various format (e.g. Perl, Python, YAML, etc.) or images. They are all called resources.

The format looks like this.


Markua resources: Include files