Questions tagged [tdd]
TDD stands for Test-Driven Development, or Test-Driven Design. It is the practice of writing a unit test before writing code to satisfy it, in what is known as the Red-Green-Refactor cycle.
678 questions
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How should I design a password reset flow when the PasswordService depends on UserRepository (email vs ID)?
I’m working on a three layers architecture backend (Laravel).
Here’s the context:
I have a PasswordService responsible for updating a user’s
password.
and a Otpservice responsible for verifying/...
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Modeling superstate and substate combinations in DDD
I am designing an analytics application using domain driven design and test driven development.
I am having difficulty modeling the following requirement:
The application shows a workitem's state. ...
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Ensuring unit test data stays accurate
Say I have a method that expects data to be in some form to perform accurately. In the actual service/application flow, that data is formed upstream in other methods or services. How can I ensure the ...
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How to unit test private method that is used by many public methods under a common API without duping the tests
This question is a more specific version of the one I posted last week.
Let's say I have a complex data structure that is posted into a bunch of different services.
The interface of all services looks ...
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Avoid Test duplication if a function created via TDD has an implementation detail that is later used in other functions
Lets say I have an API with two functions:
CreateNewMachine(CreateMachineCommand createMachine);
EditExistingMachine(EditMachineCommand editMachine);
The internal logic of both functions should be ...
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How to know the expected result in Test Driven Development when using Constrained Non-Determinism without duplicating Logic
I am currently reading the (not yet completed) ebook "Test Driven Developlment - Extensive Tutorial" by Grzegorz Gałęzowski. There is a chapter featuring Mark Seeman's idea of constrained ...
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NUnit testOf attribute usage
What are the use cases of TestOf? I'm new to NUnit testing and from what I have seen, most people don't use this attribute that much.
From my experience, TestOf helped me to quickly identify what ...
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How to follow Outside-In TDD with Micro-services and Micro-frontends?
I was exploring TDD, specifically the Outside-In TDD pattern, where we need to write the acceptance (integration) test and then jump on to granular unit tests to implement the feature and make the ...
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TDD and code reusability
Let's say that I've been iterating over my feature A with TDD. After several red-green-refactor cycles, I ended up with a nicely polished implementation with a part of the SUT encapsulated into some ...
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How do you square TDD with non-testable requirements?
I admire Bob Martin's Clean Code. Lately, however, I realized an apparent contradiction.
One of the three rules of TDD, which Bob Martin advocates for in his book, is to never write more code that is ...
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Setting up private properties for unit testing
I'm doing some TDD practice for my own learning.
I'm trying to figure out how to transparently set up private properties of an object to support testing.
I have a binary tree node:
internal class Node ...
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TDD when removing long lived feature
Suppose I had some Manager class that I need to change in regards to existing functionality by removing code.
The Manager always sends an initial message after a connection was established to do an ...
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How do unit tests facilitate refactoring without introducing regressions?
We all know the standard TDD cycle: I first write a unit test, the smallest unit test that fails; then I write some production code, again the smallest amount of production code that is sufficient to ...
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Would you test this piece of configuration code? How do I determine which code is worth testing?
We have a piece of code that decorates an interface to transparently add retry logic.
Inversion of Control configuration
service.AddOurRestApiClient()
.AddResilienceHandler("Retry", ...
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Should you define acceptance tests for vital yet simple behavior?
I'm trying to practice BDD by applying it to a simple problem—in this case, the flocking algorithm, better known as "boids".
Before any of the rules (cohesion, alignment, etc.) comes the ...
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