Ah, requirements. Gathering requirements is really hard. I’m not a BA, but like most developers, we’ve had to gather requirements at some point. You have to meet with users who might not have enough time for you or might not be able to make up their mind. Then you have to take their ideas and understand the business problem enough so that you can write up requirements. You have to try and find the balance between giving the users what they’re asking for and giving the users what they really need but don’t know it yet. It’s a fine line for sure.

I’m not going to sit here and bash BAs for lousy requirements. I’ve been the one who wrote the requirements only to have a developer mock the requirements (they probably didn’t know that I wrote them or that I was listening, but that’s neither here nor there). I tried really hard and I thought I did a good job. But nevertheless, there were things that I didn’t really think of that the other developers thought of.

Since we know that requirements gathering is hard, what can we do to make sure that we don’t end up with ambiguous requirements, we make it easy to test, and we make sure that we actually give the users what they want?

The key is that we need to find common language that people in different roles can agree on so that we can all be on the same page. Users, BAs, QAs, and developers all think differently and speak different languages. So we need to find a better way to communicate and a better way to write requirements.

The way that we do this is using the Gherkin language, or Given/When/Then format. This goes something like this:

Feature: Transfer money between accounts
    As a user
    I want to be able to transfer money between active checking accounts
    So that I don't overdraw my account
    And I don't have to go to the bank to make the transfer

Scenario: Transfer positive amount
    Given a checking account "A" that has $100
    And a checking account "B" that has $50
    When I transfer $10 from account "A" to account "B"
    Then the transfer should be successful
    Then account "A" should have $90 
    And account "B" should have $60

At the top of the file we have background information about what the user wants to do and why they want to do it. Then we go step by step and identify all of the scenarios in the Given/When/Then syntax.

So what’s the big deal? Aren’t I just writing the same thing in another format? Yes, but the good thing about the Given/When/Then format is that it helps you find the holes in your requirements and think of all the details and edge cases. If you’re requirements are more in paragraph form with some bullet points, it’s really easy to miss things, even if you’re smart and trying to do a good job.

Essentially what we’re doing here is writing test scripts. As a developer, I want to know how QA is going to test my code. Not only that, I can take these scenarios and automate these tests with acceptance testing tools like SpecFlow or Cucumber or with plain old integration tests or unit tests.

What we did here was establish a common language between everyone involved. This will help BAs think in a detailed, logical way that ensures that they don’t miss things in the requirements. This will help developers because they won’t have to write code to hit a moving target or get stuck waiting for answers to requirements questions. This will help testers because all of their test plans get written up front before the development happens, so they don’t get stuck trying to figure everything out on their own after it’s been developed (and the BAs do a lot of their work because they write their test plans for them). Not only that, this gives the development team the chance to automate the tests. This will help users because once we get the Given/When/Thens done, we can take that to the user and ask them to confirm that we’re building the right thing. We’re still using their terminology, and the syntax will help them think of cases that maybe they hadn’t thought of initially.

If you write your requirements this way, if you get everyone involved up front, and if you write your code to make the tests pass, you should be completely done when you finish development. Because you wrote code against detailed requirements that were written without ambiguity in a manner that makes it easy to write tests for it, you should have no bugs (or at least very very few bugs). QA won’t have to spend lots of time afterwards trying to figure out how to test the feature. And hopefully the users are getting what they want.

In my last post, I talked about how acceptance tests can be more important than unit tests. But clearly there is another side of the coin.

The conventional wisdom is that you should have more unit tests than acceptance tests. This is how I’ve done it in the past (on pretty much every project other than my current one).

A common scenario is a web application that uses an ORM for data access with as few stored procedures as possible. Because I’m using an ORM, my data layer has very little code. I’ll probably write a few basic unit tests and integration tests to test what data layer I have, and I’ll write integration tests to test the stored procs that I have (usually only for queries that need custom SQL).

My data layer primarily contains a really simple repository class that lets me do CRUD operations and get sort of IQueryable so that I can write LINQ queries. (If you’re using Rails, you don’t have to build any of that because it’s all there for you out of the box.) I don’t want my repository methods to have any concept of business logic or specific LINQ queries. Those belong in the business layer. The exception would be any stored procs that I have to have. I’m want to have a really thin data access layer and a fat business layer (yet another reason to use an ORM instead of having lots of SQL code in stored procs).

The business layer is going to contain the meat of the code. This is where I’m going to have a lot of unit tests. Because I kept my data layer so simple, I’m not going to have as many classes to stub out, and when I do, I’m stubbing out simple methods like Save() and Get(), which have no business logic in them.

I also have controllers, which take information from the business layer and return some sort of view model. I’ll write unit tests that verify that that translation happens correctly.

If I have some hardcore JavaScript, I’ll write unit tests for that. If it’s really simple stuff like, “when this radio button is clicked, disable this text box”, I don’t write tests for that. But when you build something that has more logic, you’ll want to test it.

At this point, I’ve tested pretty much everything very extensively. I could add some acceptance tests, which could help me communicate with the business and automate some QA testing. But at the same time, I’ve been on projects where I had excellent unit test coverage and no acceptance tests and it came out just fine. Now, that project was a two-person project with no QA team, so we just trusted our coding abilities and accepted the risk and things came out just fine. The point of saying this is not to say that you should fire your QA team, it just an example of how you can structure your code in a way that will allow you to unit test the code and get it right pretty much all the time.

This is just one example of one project. Your project might be different, with a different architecture, a different team, and a different business. You need to figure out what works best for you.

The conventional wisdom on TDD and testing is that unit tests are the preferred kind of tests to write. They help you design your code, and they run fast. Integration tests and acceptance tests are important too, but you should have far fewer of these. They exist so that you can have some end to end tests and to help test things that you can’t easily test with a unit test.

You may have also seen the automated testing triangle diagram, which illustrates how you should have more unit tests than the other kinds of tests and how the unit tests are the foundation of your test suite.

The implication of all of these diagrams and ideas is that this is the best way to do it on every project. But is that true?

I would argue that there are situations where integration tests and acceptance tests are more important than unit tests.

But wait, you say, aren’t you the guy who is always speaking about TDD and the value of unit tests?!? Was that all a lie?

Once again, the correct answer is… it depends!

Take my current project for example. We are writing web services that do back end transaction processing. Our system is very configurable, so we can make the system work very differently based on some configuration tables in the database, and different configurations are used for different types of transactions.

We have a very well defined framework. Even before I start coding a feature, I know what classes I need to create because they were defined up front with a systems analyst. So I’m not really going to get any benefit from TDD designing my code because the design work is already done.

Because the system is so configurable, we can handle new kinds of transactions by inserting new configurations into the database. There is very little coding involved. Sure, I could write unit tests for the configurable components of the application, but unit tests can’t tell me if the system works correctly for my new configuration. The best way to do that is with acceptance tests.

Not only is our framework well defined, we follow the SOLID principles and have lots of small classes that work together. I could write unit tests for all of the small classes, and in some cases I do, but in
most cases I find that the unit tests aren’t testing very much. Not only that, they tend to have lots of stubs and mocks, which makes the unit tests very brittle. Usually the integration tests and acceptance tests are more brittle, in our case, it seems to be the other way around. Nothing seems like a waste of time more than updating an existing unit test that broke because you refactored a seemingly unrelated class, especially when you have a nice acceptance test that is working just fine.

I’ve just shot down many of the positive arguments for unit tests on our project. Because it’s very important for us to test that our system is configured correctly, acceptance tests become very
important.

Well, if I already have a big suite of acceptance tests, do I really need unit tests to test things that are well covered by acceptance tests? Maybe if I have some class that has many different permutations, but if there’s only a couple paths through a class and I’ve covered it with acceptance tests, then I’m just going to skip the unit tests.

We also use stored procedures to do most of our data access. You can’t easily unit test a stored procedure, so we need more acceptance tests and integration tests to take care of that.

We still have about twice as many unit tests as acceptance tests, but that tide is turning. In a couple months, we will probably have twice as many acceptance tests as unit tests.

It honestly took us awhile to convince ourselves that we weren’t doing it wrong based on the conventional wisdom. But when we thought about it it just made sense to do it the way we’re doing it.

The moral of the story is that there are always exceptions to the so-called “best practices”.

A few of us have been talking and have decided to start the Columbus ATDD Developers Group. If you’re in the Central Ohio area and you use tools like Cucumber and SpecFlow, believe that testing is not just for QA people, or if acceptance test driven development sounds interesting to you, then this group may be for you. This is a developer-focused group, so expect to learn things about how to write code using BDD testing tools, design patterns and practices, how acceptance tests mesh with your unit tests, and other developer topics. QA people are always welcome too, especially the technical-minded ones! Absolutely no experience is required, just come ready to learn.

Testing is not just for QA people, and BDD testing tools like Cucumber and SpecFlow have really helped me speak to business people, BAs, and testers with a common language and automate acceptance testing for my features. This hasn’t all been easy, and I’ve had to learn a new set of workflows, tools, and patterns. I found that I’ve asked a lot of questions about agile testing and BDD tools on Twitter and I’ve called people up when I’ve had questions on how to do things, and having those connections have really helped me out as I work through the learning process.

We are going to meet on the 1st Thursday of the month from 11:30-12:30 at various locations around Columbus. We’ll probably move the group around so that the same people don’t get stuck with the drive every month. This is an informal group so we’ll have open discussions as well as presentations and people showing their code. We want to hear everyone’s questions and ideas.

Our first meeting will be Thursday, March 1 from 11:30-12:30 at IGS Energy in Dublin. We will have an open space style discussion about Adopting ATDD in Your Organization. Some of us are far along down this path and some are just starting out, and we can all learn a lot from each other’s experiences. So come with your questions and ideas to share. And because IGS Energy is awesome, they will hook you up with free pizza and pop.

If you want to keep up with the group, we are in all the usual places:

• Blog (we’ll post meeting announcements as well as guest posts about ATDD topics!) – http://columbusatdd.wordpress.com
• Twitter – @ColumbusATDD
• Google group

I probably won’t post meeting announcements on my blog, so go follow the RSS feed on the blog.

Hope to see some of you there!

When I write unit tests, I use the BDD-style GIven/When/Then format so that the tests are descriptive and explain the business functionality that is being implemented. But I’ve recently changed the way that I do it.

Let’s say that I’m implementing bank account functionality and I am writing code to implement the following:

Given a bank account
When I deposit money into the account
Then the balance should increase by the amount of the deposit

The old way

I used to write them like this:

[TestFixture]
public class When_I_deposit_money_into_the_account : Specification
{
    private Account _account;

    public void Establish_context()
    {
        _account = Given_a_bank_account();
    }

    public void Because_of()
    {
        _account.Deposit(10m);
    }

    [Test]
    public void Then_the_balance_should_increase_by_the_amount_of_the_deposit()
    {
        _account.Balance.ShouldEqual(10m);
    }

    private Account Given_a_bank_account()
    {
        return new Account();
    }
}

This style is used by RSpec and many people in the .NET community. I’ve had a lot of success doing it this way, but I’ve always had some complaints.

• The Given/When/Then phrases are spread out and aren’t in order.
• We have the Specification base class, which isn’t bad but I think it might confuse new people who know NUnit but don’t know my special base class.
• If you have a lot of “given” statements, you’re tempted to use inheritance or nested contexts, each with their own level of setup, virtual properties and methods, etc. This is very unreadable and gets unwieldy very quickly.

The new way

This isn’t really a new way, but it’s new to me. I’ve seen it before over the years but I didn’t really start doing it until I joined my current team where they did it this way and I’ve come to like it a lot better than the old way.

[TestFixture]
public class Bank_account_tests
{
    [Test]
    public void Deposit()
    {
        Given_a_bank_account();
        When_I_deposit_money_into_the_account();
        Then_the_balance_should_increase_by_the_amount_of_the_deposit();
    }

#region Helper methods  

    private void Given_a_bank_account()
    {
        _account = new Account();
    }

    private void When_I_deposit_money_into_the_account()
    {
        _account.Deposit(10m);
    }

    private void Then_the_balance_should_increase_by_the_amount_of_the_deposit()
    {
        _account.Balance.ShouldEqual(10m);
    }

#endregion
}

The best thing about doing it this way is that the business functionality is clearly specified at the top of the class and the Given/When/Then statements aren’t spread out all over the place. There are no crazy inheritance hierarchies, base classes, or big setup methods. When I write tests, I just write out the Given/When/Then scenarios in plain text and then use Specs2Tests to generate the test code for me. Then all I have to do is fill in the private helper methods. This is really easy, like filling in the blanks.

Also, I typically hate regions but in this case I find that they work quite well because they hide the helper methods that I typically don’t want to see when I open the class file.

It depends

Obviously there are situations where this is all overkill and you can just write simple tests without Given/When/Then methods all over the place. Just do whatever makes sense. I’ve found that this new-to-me way leads to very readable and easy to maintain tests.

I came across this post the other day that went on and on railing on things that the author found unacceptable in today’s web frameworks, specifically Rails and ASP.NET MVC. It covered the whole gamut of issues, from abstract base classes in ASP.NET MVC to mega-controllers in MVC frameworks.

I’ve thought a lot of the same things too, to various extents. For example, I’ve never understood why controllers existed. Why can’t we just define routes that are handled by route handler classes that use conventions and REST and things like that? Yet I continue to use controllers in web apps. It made me think, at what point is something bad enough to do something about it and when do I just live with it?

This is the kind of question that makes software development so difficult, but at the same time a lot of fun. Today we were looking at a piece of code that needed to be refactored. We couldn’t figure out what the right way was to implement it, nor could we decide if it was worth the time to even do anything about it.

How do you decide what to do in this situation? The way I see it, you have to look at the return on investment on everything you do. In my controller example, I could invest the time to implement some non-controller solution. On a large enough project, I would probably get a good return on investment compared to using controllers.

But then again, you could argue that since controllers are towards the outer layers of the stack, maybe you can live with it. I care much more about the sanctity of the domain model because that’s the heart of my application. So is it really worth the time or not?

But it gets more complicated than that. Let’s say it takes me a week to implement the non-controller solution. During that time I’m not delivering any client facing features, and that might not sit too well with the people paying for your project. I was in this situation once, and the project almost got cancelled. Thankfully I pulled it out and was on the project for a year and a half and my framework investments more than paid off. But those first few weeks were nerve racking.

So what’s the answer to my original question? I guess it depends. As does pretty much everything else in software development. Which means that you don’t get an easy way out and you are going to have to use your head.

I still think I’m right about the return on investment thing. But at the same time you need to be shrewd about it.

Part of being a developer is taking requirements that are written by business analysts and understanding the business problem and the requirements enough to develop a working software solution to solve the problem. In most environments, BAs will work with the developers to help them understand the feature. Once the developers are done, the QA team has to try to understand all of the requirements that the BAs and developers already covered extensively.

You can run into multiple problems here. First, many business analysts write requirements in a format that are not detailed enough to outline all of the edge cases. This is not a knock on business analysts, but they often think in terms of use cases and how the business will use the functionality. But this is why we have a team. Business analysts are better at thinking about the needs of the business and how the app will solve business problems. Developers and testers are good at thinking about the details but sometimes don’t always see the big picture.

This is why it’s so important to bring all of the team members together so that we can take advantage of all of our strengths. We do this in a meeting we call the “three amigos”.

How It Works

A three amigos meeting consists of a business analyst, a QA tester, and a developer. If it’s a larger feature that might involve more than one developer or more than one tester, then you might have more people in the meeting. The BA has written up all of the requirements beforehand, and ideally everyone in the meeting will have read through them before the meeting so that people can have a basic understanding of the feature and can come with their questions.

Once we all have a basic understanding of what we need to develop, we read through the requirements together and someone starts writing all of the test scenarios on a whiteboard. We’re not writing out the complete test plans, we’re just covering the scenarios that need to be tested and maybe some of the things that each scenario will check for. The primary goal is here to figure out what needs to be tested and how we’re going to test each scenario (unit tests, acceptance tests, or manual tests).

Outcomes

The primary outcome of the three amigos are acceptance tests written in Given/When/Then format. Actually writing these out can take a little time, so we don’t do that with everyone sitting in a room. Typically a developer or a tester will work on it outside of the meeting, and once they have the scenarios all written out, then we do a quick review with everyone else that was involved in the original three amigos meeting to make sure that we all agree with what was produced.

Benefits

When you get everyone involved up front, you spread the understanding of what’s being developed across multiple team members. On most teams, BAs and developers have a good understanding of what’s being built, but QA people are left in the dark until you’re most of the way through the process. This way, QA people know what’s going on and they can add their valuable input before a line of code is written. As a developer, this will also help you because the QA people helped you agree on the acceptance criteria that you’ll need in order to complete the feature. No more guessing about what QA is going to test or whether you’ve built everything that needs to be built.

Automating acceptance tests becomes much easier when QA people have helped you come up with the tests and have agreed on them. This is also a good chance to talk to the QA team about what you’re going to automate so that they know that they don’t have to spend as much time manually testing scenarios that the developers have fully automated. Remember, we’re all on the same team, and we’re all responsible for quality. It shouldn’t matter who is testing something as long as it gets tested.

In the end, you end up with fewer bugs because developers know what they need to build and they have everything they need to build it with no coding errors. Certainly this works much better if you’re writing automated unit tests and acceptance tests, but even if you aren’t, at least you will know what you need to build and what it needs to be able to do in order to pass all of the QA tests.

Exceptions

As with everything in software development, it helps to use common sense. We typically don’t do three amigos meetings for really simple features. There’s no hard and fast rule about this, so you have to use your head. If it doesn’t make sense to have a meeting with a bunch of people to review something that you can handle with simple hallway conversations, then go with that.

We don’t always do three amigos on bugs either. If it’s a coding error, there isn’t much to discuss, it just doesn’t work correctly. If we missed something in the requirements, it might require a bigger discussion about the new requirement.

I think that it’s dangerous to make blanket policies that say that you must have a meeting or a certain amount of documentation before you start development on something. The goal is to develop working software that meets the needs of the business with a sufficient level of testing and documentation. You have to decide what that is and how you get there.

On my current project, we release every 2 weeks. We do the push to production on Saturday, so we set a deadline of Wednesday night for everything to be developed and tested so that we can have two days for demos and UAT.

I remember a certain Wednesday a couple of months ago where things were chaotic to say the least. We looked at the board on Wednesday in the early afternoon and there were 20 items where testing was not complete. We were running around trying to make sure that everything got tested. The entire development team was helping out with testing. Many people stayed past dinnertime to get everything done.

This past Wednesday was much different. Everyone was very relaxed. There was only one item on the board that was still being tested. We were all working on getting stuff ready for the next iteration. And oh by the way, one of the QA testers was out on vacation and another one had been moved to another project.

I immediately thought back to that chaotic Wednesday a few months ago and thought about everything that has happened since then. We certainly had come a long way to get to the point where things were much more relaxed. So what happened?

The Three Amigos

Before development can start on a feature, we have a “three amigos” meeting where developers, business analysts, and QA people get together and decide on the acceptance criteria for the feature. This helps us all get on the same page and make sure that we know what we’re building. It also gets the QA team involved very early in the process, so when it comes time for them to manually test the feature, they already know it inside out.

Automating acceptance tests

The outcome of the three amigos meeting is acceptance criteria. Developers take these and automate them whenever possible (we use a combination of unit tests and acceptance tests using SpecFlow). The development workflow now looks something like this:

• Work with the QA team to write out the acceptance tests in SpecFlow
• Develop all of the components needed to make the feature work, writing unit tests along the way
• Try and get the acceptance tests to pass, fixing any problems we find along the way

When I’m working on the “try and get the acceptance tests to pass” phase, I’m going to find pretty much all of the coding errors that we made during development. The development ticket is still marked as “In Development” at this point, which is very important. We all take quality seriously, both QA testers and developers. I’m not going to hand it over to be tested by the QA team until I can get all of the acceptance tests to pass.

Almost no bugs

Because we knew what we were building up front and because we automated pretty much all of the testing, the QA team is finding very few bugs in the new features that we’re developing. One of our testers brought this up in our retrospective this past week and mentioned how they got everything tested so much faster because they weren’t finding bugs, writing up bugs, waiting for bugs to be fixed, and retesting bug fixes.

We had looked at the schedule earlier in the week and we had thought that developers might have to help out with testing because one of the testers was on vacation and they had some items to test that we thought would take a long time. In the end, no developers had to help with testing and testing got done ahead of schedule!

Everyone talks about how bugs are a waste of time, how they slow you down, etc., but it was really cool to see it play out. Yeah, getting those acceptance tests to pass takes a little extra time, but now I can hand a completed feature over to QA and have a good chance of not having any bugs. We had two developers working for a week on the feature that we completed, and we did it with no bugs. Not only that, we have automated acceptance tests that will do our regression testing for us.

Recap

A lot of the changes that we’ve made seem to be relatively minor, but they’ve produced huge dividends. Much of it comes down to discipline, not cutting corners, communicating effectively, and taking pride in your work. I’m really excited about what we’re going to be able to do from here and I expect to have even more stories to tell in the near future.

A recent post on a local user group message board set off a firestorm of reaction. The gist of the post was that developers in Columbus “seem to focus on life in their work/life balance”, aren’t interested in working long hours, “check out at 5pm”, and that “the drive to put a dent in the universe doesn’t seem as strong here.”

Steve Jobs is the poster child for the startup/work hard lifestyle. Steve Jobs worked really hard, made a lot of money, and invented technology that changed the way that many of us doing things. When he died, scores of people were proclaiming his greatness and praising him for his contributions to society. According to many people, Steve Jobs made a large dent in the universe.

I hope I’m making a dent in the universe. But if I am, it’s not going to be because I write code. I’m thankful that I get paid to do something that I really enjoy doing. But at the end of the day, what difference does it make if I write some code that helps a company make more money?

I really love software development. I enjoy hacking on Ruby code at night and talking with people about which JavaScript framework is going to win. But while I sit here and watch my plasma TV and type on my high-end MacBook Pro while my iPhone beeps at me, people out there are struggling to get food for their kids to eat tonight, living in fear of disease or wars or corrupt governments, or sitting at home alone feeling lonely.

Obviously I’m not living in Africa running an orphanage and digging wells for poor people, but doesn’t mean that my time spent writing software is meaningless. I’m reminded of the scene in Chariots of Fire when Eric Liddell is talking about how he feels when he runs.

I believe God made me for a purpose, but he also made me fast. And when I run I feel His pleasure.

Eric was a missionary to China at times in his life, but he also found a lot of meaning in training and running in the Olympics. Some people said that running wasn’t as important as being a missionary, but running was a means to an end for him, that end being finding God’s pleasure in whatever he was doing.

We’ve all been given talents, and many of us use them every day at work. I hope that my ability to write software will give me opportunities to make a difference in lives of people that I encounter in the process. I hope that I can instill confidence in the people I work with and that we can build camaraderie while we work together towards a common goal. I hope that people are energized and excited to come to work and that we can experience that good feeling that comes with working together to be successful. And while we’re at it, we’ll develop some software that will help a business be more profitable.

While I enjoy what I do at work, to me there’s a lot more out there for me than my job. I’m just not willing to line up for 80 hour weeks, multiple side projects, and lots of weekends away from home. I have a wife and two kids and to me, those things are much more important than software development. This doesn’t mean that I’m not dedicated or that I don’t care about my craft or that I’m any less of a developer than the hero programmer working 80 hours. I just have some other priorities in life that I also find important.

Many people out there work long hours (particularly people who are single). Many doing it willingly because they enjoy doing it or they find it challenging and exciting. I don’t really have a problem with that, because we’re all entitled to spend our time doing what we want.

If you could promise me that if I worked as hard as Steve Jobs that I would have the level of success that he had, I wouldn’t take you up on it. I guess I just have a different view of what success is. I would rather be a good husband, father, and friend to other people and try to use my job and career to further those goals. I may not appear to be as “driven” or “motivated” to people in the startup world, but I beg to differ. I have a passion for what I do, and software development is just one piece of that puzzle. Go on vacation away from your computer and your job for a week and you’ll notice how it doesn’t seem so important by the end of the week.

We are fortunate as developers to work in a fun and exciting industry where we get paid to do something that many of us would enjoy doing for free. My challenge to you is to look past that and see the big picture. Some day my working days will be done and when that time comes, I have a feeling that I will care more about the friendships I made and the people I helped than I will about whether I followed the Single Responsibility Principle or how many user groups I spoke at. But that day is still a long way off, so for the time being I’m going to use all the passions and abilities that I’ve been given to make the world a better place.

UPDATE: Apparently someone else was thinking the same as me… and it’s worth the read.

I’m a huge fan of TDD, and one thing that is really frustrating is when I’m working with people who either don’t know how to write unit tests or don’t agree with the idea of writing unit tests. This is especially true in a static language because those people will design the code in a way that prevents me from writing tests.

Why is it that so many developers don’t care about testing? Most developers that I’ve worked with, whether I agree with their ideas or not, take pride in their work and generally care about their job.

I think that this goes back to the traditional divide between development teams and QA teams. On most teams, there is always pressure to get things done faster. In order to get things done faster, you have to either cut something out or get better at what you do. It’s much easier to cut something out, so inevitably the team will do what they can to cut development time. This means cutting out unit testing (or not taking the time to do it in the first place). Once you cut out unit testing, the next thing you throw out is good design principles and just get it done as fast as possible.

We all know that if you don’t write unit tests and you just throw in spaghetti code to get something done that you’re going to have a lot more bugs. It takes time for QA people to find bugs, reproduce bugs, write up bugs, and retest bugs. But why should the development team care? They were just told to go faster. Who cares how long it takes the QA team to test the application? Why does the development team care if it takes an inordinate amount of time to regression test the application?

The QA team knows what is going on, so they don’t trust the developers. They know that the developers are likely to write bugs, so they will need to be more thorough. The problem is that sometimes this means doing an inordinate amount of manual testing (which may or may not be possible).

This is what happens when development and QA are separate teams that don’t work closely together. Each one is only looking out for their own interests, not the interest of the project as a whole. In my opinion, it makes no sense to do it this way, but this how it’s done in many companies.

On my current project, we have broken down the walls. The QA team and the development team report to the same manager. The developers, BAs, and QAs sit together in the same area. Before we work on a feature, we all sit down together and decide what will be tested with unit tests, what will be tested with automated acceptance tests, and what will be manually tested. Because we’re all on the same team, I (as a developer) care about testing just as much as anyone else on the team. There’s no reason for me to not care about testing. Don’t I want the app to work too? If I write crappy code, it’s going to take longer for the team to get things done. If I don’t help automate regression testing, it’s going to take the team longer to manually test everything. I don’t want either of these, so I’m going to help out. The QA team is starting to realize that they can trust our automated tests (which they’re not used to), and we all agree that in the future they will do much less manual testing.

Because we’re on the same team, we’ve enabled developers to care about testing. If we want to get things done faster, I want to make sure that I automate as many tests as possible so that QA doesn’t have to manually test them. I might even pitch in to help with manual testing when that time comes. In the end, we end up with high quality software delivered in less time because we have very few bugs and we will test things in the most efficient way possible.