Martin Fowler

DECEMBER 11, 2023

Test-Driven Development (TDD) is a technique for building software that guides software development by writing tests. In essence we follow three simple steps repeatedly: Write a test for the next bit of functionality you want to add. Write the functional code until the test passes.

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Software Review TDD Test-Driven Development Testing 270

Henrik Warne

JUNE 19, 2022

I recently finished Effective Software Testing – A Developer’s Guide by Maurício Aniche , and I really liked it. I have been coding for a long time and I think I have been writing pretty good tests for the features I have implemented. Specification-Based Testing. Most Interesting Chapters.

Software Review 220

Software Review Testing Systems Review Technical Review 220

Henrik Warne

SEPTEMBER 29, 2019

I like to use Test-Driven Development (TDD) when coding. However, in some circumstances, TDD is more of a hinderance than a help. Writing tests only makes sense after the solution is viable. Last week, I came across examples of where I developed new functionality without using TDD. Avoiding Premature Tests.

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Software Review Systems Review TDD Test-Driven Development 178

Coding Dojo

JANUARY 9, 2023

It’s inevitable for mistakes to happen during the software development lifecycle – developers are human and everybody makes mistakes. While you may not be able to completely … What Is Test-Driven Development? TDD Guide For Beginners Read More ». TDD Guide For Beginners Read More ».

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Test-Driven Development Software Review Technical Review TDD 52

The Programmer's Paradox

MARCH 16, 2023

It all has to be very reactive; you keep fiddling with the code until it gets traction. Under those conditions, it doesn’t make sense to cross all the t’s and dot the i’s as the life expectancy of the code is weeks or months. We see the same kinda thing with unit testing. So you build, pivot, build, pivot, etc. But it got worse.

Software Review 40

Software Review Systems Review TDD Agile 40

Habitable Code

AUGUST 19, 2022

Back in 2014 I wrote a blog post listing three mistakes often made by folks who are new to test-driven development (TDD). Writing tests for invented requirements. Writing a dozen or more lines of code to get to GREEN. How shall we test it?”

Software Review 52

Software Review TDD Test-Driven Development Testing 52

Habitable Code

AUGUST 12, 2022

Back in 2014 I wrote a blog post listing three mistakes often made by folks who are new to test-driven development (TDD). Each time I visit a team that is relatively new to TDD I find the same basic mistakes cropping up every time. Writing tests for invented requirements. This is part 1.

Software Review 52

Software Review TDD Test-Driven Development Testing 52

DevOps.com

OCTOBER 3, 2019

Unit testing is like exercise: Companies know it’s good for you and you should do it, but given their druthers, they’d rather avoid the effort and just get to the benefit. After all, making unit testing a standard practice in a company’s software development process is probably the […]. I wish I could say it’s otherwise.

Software Review 87

Software Review TDD Testing Exercises 87

Habitable Code

AUGUST 26, 2022

Back in 2014 I wrote a blog post listing three mistakes often made by folks who are new to test-driven development (TDD). Writing tests for invented requirements. Writing a dozen or more lines of code to get to GREEN. It is also not TDD. So, what did you find when you tried to get the test above to GREEN?

Software Review 52

Software Review TDD Testing Test-Driven Development 52

CircleCI

APRIL 25, 2019

In my previous post we talked about mocks and stubs: what they are, and how to use them in various testing scenarios to give yourself more flexibility, speed up your tests, and get more determinism out of your test suite.

Software Review 85

Software Review TDD Testing Test-Driven Development 85

Agile Alliance

FEBRUARY 23, 2019

This session shows how to use TDD to drive the design of a multithreaded code. If you've confronted test driving for thread-safety this session is for you.

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Software Review Testing Technical Review TDD 183

OverOps

MARCH 30, 2020

The move to innovate at speed and scale is stressing software quality and exposing the limitations of testing. Don’t get me wrong – testing in all its forms is inseparable from the software delivery supply chain. Testing is no longer enough. The Red Queen Hypothesis (and What it Means for Testing).

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Software Review Testing Software Technical Review 318

Xebia

JANUARY 27, 2024

Without a clear design, we use pair programming and test-driven development (TDD) until we are satisfied, focusing on the desired API first. This typically concludes with the removal of the original code. We each tend to review changes of interest asynchronously from the pull request.

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Software Review Systems Review Tools Development 130

James Shore

APRIL 13, 2022

Test-Driven Development is one of the few truly new Agile ideas. Originally created by Kent Beck as part of Extreme Programming, it’s a fantastic way of making sure your code does what you intended it to do. It’s not perfect, but it’s a powerful tool for creating robust and reliable software. Test-Driven Development. ??

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Test-Driven Development Software Review TDD Agile 111

Net Objectives

MAY 16, 2019

TDD is a powerful way to develop new code. However, most organizations have significant existing code that was not developed this way. This “legacy code” is often difficult to test because it was not designed to be testable in the first place.

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Xebia

APRIL 5, 2022

In many organizations, automated testing lags behind and becomes a bottleneck for successful continuous delivery. Either tests do not provide enough confidence or companies take a very traditional approach, resulting in releases either introducing substantial risks or becoming costly. These principles tell us our tests should be: Fast.

Software Review 130

Software Review Testing Systems Review Technical Review 130

Net Objectives

APRIL 26, 2019

In TDD and Code Coverage, we established that code coverage tools do not provide useful project metrics, in and of themselves. In TDD, we don’t use code coverage tools for this purpose because we don’t need to. Continue reading "TDD and Code Coverage Tools". .

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Software Review TDD Tools Metrics 40

Apiumhub

SEPTEMBER 19, 2018

Last month we talked about TDD example in software development ( part 1 ) and TDD first cycle ( part 2 ). In this new TDD and primitive obsession article, we will focus on removing duplication and reinforcing the constructors of our entities, something key to have a robust system. TDD: primitive obsession.

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Software Review Systems Review TDD Testing 67

Apiumhub

AUGUST 30, 2018

Let’s continue with our series of TDD articles, in the first part we looked at the theory behind the TDD and Unit Testing. In this second part, TDD First Cycle , we begin to develop our application, an application of notes where a user can write notes and everything that comes to our mind. TDD First Cycle.

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Software Review TDD Testing Case Study 56

StubHub

NOVEMBER 2, 2020

During my years as developer, I have faced several troubles in production due to bugs. For me, this is a huge problem because I love to sleep, and I cannot sleep well if I have doubts about the quality of my code. Because of this, I started some years ago to study how to sleep well, which came down to learning about testing my code.

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TechBeacon

JUNE 8, 2021

Most developers believe in the value of unit tests, even if they don't always like writing them. Most of them are okay with writing unit tests while doing new development work or practicing test-driven development (TDD), but it's easy to be disciplined with greenfield development.

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Net Objectives

APRIL 22, 2019

Part of the TDD process consists of writing failing tests before the code that will eventually make them pass. Test-first alone is not TDD per se, but it is a part of it. When tests are written before production code, this has several beneficial effects.

Software Review 40

Software Review TDD Testing 40

Net Objectives

FEBRUARY 15, 2019

It’s not unusual these days for development organizations to adopt a code coverage requirement. This is usually expressed as a percentage: at least X% of all code developed must be covered by tests.

Software Review 40

Software Review TDD Testing Tools 40

Net Objectives

JANUARY 22, 2019

I am heartened by the surge in TDD training. To me TDD is the 2nd most important thing for devs to learn-ATDD being the 1st TDD’s not just the automation of unit testing. TDD’s formulation of tests, prior to code, drives design.

Software Review 40

Software Review Technical Review TDD Sustainability 40

Net Objectives

APRIL 4, 2019

Developers often remark that the tests may contain the same algorithms that the production code does. This feels like redundancy and makes them wonder if TDD is promoting bad practices. The code would contain something like this: return (F - 32) * 5/9; The test might contain … Continue reading "TDD Replicating Algorithms".

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Apiumhub

AUGUST 16, 2018

After a while thinking about what type of TDD article to write about and, since there are many of them and very good theoretical ones (written by influencers in the world of software development), I have chosen to develop a mini-project while explaining the key points of the development of the application, basically giving you a TDD example.

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Software Review TDD Software Development Examples 42

Net Objectives

APRIL 2, 2019

When TDD was first suggested, there were many who were dubious about the wisdom of having developers write tests of their own code. Among the objections raised was that developers will slow down if you burden them with new tasks, namely writing the tests as well as the code. This seems logical.

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James Shore

FEBRUARY 1, 2019

If you're using test-driven development, don't measure unit test code coverage. To improve code and test practices. If waiting for defects to escape is too risky for you, have experienced QA testers conduct exploratory testing and conduct root-cause analysis on the results. Code coverage won't tell you.

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Dzone - DevOps

OCTOBER 7, 2019

Without knowing the solution, is TDD worth it? I like to use Test-Driven Development (TDD) when coding. However, in some circumstances, TDD is more of a hinderance than a help. Writing tests only makes sense after the solution is viable. Writing tests only makes sense after the solution is viable.

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Software Review TDD Test-Driven Development Testing 42

James Shore

MARCH 29, 2021

To share your thoughts, join the AoAD2 open review mailing list. Test-Driven Development. We produce high-quality code in small, verifiable steps. At best, mistakes lead to code that won’t compile. No wonder, then, that software is buggy. It’s test-driven development, and it actually delivers these results.

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James Shore

MARCH 17, 2022

Fast, Reliable Tests. Our tests don’t get in our way. Test-Driven Development. Teams who embrace test-driven development accumulate thousands of tests. The more tests you have, the more important speed and reliability become. With TDD, you run the tests as often as one or two times every minute.

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Software Review Testing Systems Review Technical Review 114

Net Objectives

MARCH 8, 2019

“Refactoring” refers to the discipline of improving the design of existing code without changing its behavior. It is usually thought of as a way to deal with old legacy code that is functional but poorly designed and thus hard to work with.

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Honeycomb

JUNE 23, 2020

The most successful software development movement of my lifetime is probably test-driven development or TDD. With TDD, requirements are turned into very specific test cases, then the code is improved so the tests pass. Using TDD to Drive Better Code.

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Test-Driven Development Software Review Systems Review Technical Review 98

Net Objectives

JANUARY 10, 2019

With a name like TEST-driven development you’d expect TDD is mostly about testing. Especially when the end result is tests. In our book Design Patterns Explained we discussed how testability (how easily code can be tested) is an intrinsic property of software and is highly correlated with good design.

Software Review 40

Software Review Technical Review TDD Sustainability 40

DevOps.com

DECEMBER 17, 2019

At John Hancock, we use Test-Driven Design (TDD) for all our new initiatives. TDD has three simple steps: Before you write functional code, write a test that proves if the implementation works or fails. Write the code and watch the test pass.

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Net Objectives

FEBRUARY 25, 2019

I mentioned earlier that TDD offers qualitative measurements about production code, namely that a large average fixture size can be used to measure relative coupling in a system. Similarly, tests can reveal whether, and to the extent, that the Single Responsibility Principle has been adhered to.

Software Review 40

Software Review Systems Review TDD Testing 40

Net Objectives

MARCH 15, 2019

When organizations adopt TDD as their development paradigm, early results can be quite good once the teams get over the initial learning curve. Code quality goes up, defect rate goes down, and the team gains confidence which allows them to be aggressive in pursuing business value.

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