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What is a Development Manager?

In a previous posting on Agile, I discussed the 3 main roles in Scrum: Scrum Master, Product Owner and the dev team. However, there is also an additional role that is not always considered core, but which is increasingly an integral part of Agile, and that is the Development Manager.


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What Is Agile?

Agile software development is an approach to developing and delivering working software into production in incremental, iterative work cadences, known as sprints.

Being ‘agile’ is more of a philosophy than a set of rules. It is a mindset to continually improve; to embrace new ideas and implement the best ones, testing in the wild all the while to find what really works. Collaboration, feedback and iteration are key.

In this post, I will briefly touch on the Agile Manifesto where it all started, before looking at some basic concepts (feedback) and alternatives (waterfall), before the main bulk of the article, which is the flavors of Agile, including XP, Kanban and, primarily, Scrum.


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A brief introduction to SAML


SAML, or Security Assertion Markup Language, is an protocol used to exchange authentication and authorization data. It is XML based and allows the sharing of identity between multiple organizations and applications.

SAML is one of the fundamental cloud identity security standards.

The primary use case of SAML is Internet Single Sign On (SSO).


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Running an individual unit test with maven

Individual tests can be run from maven. This must be done from within the folder that contains the source (as in the folder that contains src/test/java), which will likely be either be the root of your maven project, or in one of your modules.

For surefire (unit tests), this will be something like:

mvn -Dtest=com.your.package.YourTest test

For failsafe (integration tests), it will be something like:

mvn -Dit.test=com.your.package.YourIT verify

This is covered in the maven surefire plugin docs and maven failesafe plugin docs respectively, but those examples don’t mention packages names, which are required.

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Git rebase

Git rebase can be intimidating for newcomers, but it’s a powerful and versatile tool when you understand it.

Like git merge, rebase allows you to bring the changes from one branch into another. However instead of all those noisy commit merges you get with the merge command, rebase allows a tidier, linear commit history.

Technically, rebasing is the process of moving a branch to a new base commit, but if that isn’t clear, hopefully the diagrams and explanations below will illuminate.

Before we even start looking at rebase though, we will start with a quick review of merging.


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Getting rid of IntelliJ warning: Local variable is redundant

When dealing with a piece of code like this

    String id = "abc";
    return id;

IntelliJ may give a warning message:

    Local variable 'id' is redundant

I can see IntelliJ’s point. The code could be rewritten as follows:

    return "abc";

However, sometimes it can be useful to use a variable name as a form of documentation.
Also, and more often, I don’t want to see this warning pop up for other people’s code! If they wish to use a “redundant” variable, who am I to argue? I certainly don’t want to be warned about it every time I do a commit.

To disable this warning, deselect the following:

Preferences -> Editor -> Inspections (-> Java) -> Data flow issues -> Redundant local variable -> Ignore immediately returned or thrown variables

Or you can setup custom handling for tests (e.g. weak warnings) under Severity by Scope.
(Based on IntelliJ 15)


Chrome Keyboard Shortcuts

I typically use Chrome as my browser of choice, and it comes with a plethora of keyboard shortcuts that I find incredibly useful and use constantly. However there are ways to add to those shortcuts too, including a tool called Vimium…


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Running tests in IntelliJ for a multi module maven project

This post shows how to run all the tests in IntelliJ for a multi module maven project.


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Unit Testing – the Hard Parts @ NYC Code Camp

Thanks to everyone who came to my “Unit Testing – the Hard Parts” presentation @ New York Code Camp. I really enjoyed it! Great crowd, lots of follow up questions. And cool Microsoft office space in Times Square. Thank you to all who attended. My slides are here:

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Test Doubles: mocks, dummies and stubs

Most classes have collaborators. When unit testing, you usually want to avoid using real implementations of those collaborators to avoid test brittleness and binding/coupling, and instead use Test Doubles: Mocks, Stubs and Doubles.

This article references two existing articles on the subject: Mocks Aren’t Stubs, by Martin Fowler and The Little Mocker, by “Uncle” Bob Martin. I recommend them both.



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