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Results tagged with tdd
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user 1204
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.
18
votes
Accepted
How to get initial API right using TDD?
https://hanselminutes.com/171/return-of-uncle-bob#
I think it would be more sensible to approach TDD from a perspective of validating your structural design. …
- 200k
4
votes
Accepted
How would one implement a data structure with test-driven development in mind?
A common misconception about TDD is that TDD drives the entire design of a software project, that a complete software architecture naturally emerges from writing tests and getting them to pass. … That's not how TDD works. You still have to design your software. …
- 200k
13
votes
Accepted
Building complex algorithms with TDD
TDD is not a substitute for design.
This is a common misconception about TDD, that you can somehow "grow" a coherent design from red-green-refactor. You can't. …
- 200k
11
votes
Accepted
Which GOF design patterns work well with TDD, and which do not?
Any pattern that promotes a functional approach (i.e. you pass it some value(s), it returns a value, and doesn't cause side effects) is going to be straightforward to test. Any pattern that causes si …
- 200k
26
votes
What is the difference between writing test cases for BDD and TDD?
Within the confines of the requirements and testing dictated by BDD, you will use "ordinary" TDD to develop the software. …
- 200k
17
votes
Accepted
Can I start with a passing unit test?
No, because it is possible to write a test that inadvertently passes when it should actually fail.
That's why you must make it fail first, so that you can demonstrate transitioning from a failed st …
- 200k
10
votes
TDD - is it just about unit tests?
Practicing TDD (which should really be called Test-Driven Design, not Test-driven Development) forces you to think about your code and write it in ways that make it more unit-testable. … Short answer: The practice of unit testing (of which TDD is a subset) can greatly improve the quality of the code you write. But, like most things in computing, it is not a silver bullet. …
- 200k
4
votes
Test driven vs Business requirements constant changing
Your question seems to suggest that TDD is bound by development life cycles. I'm not sure I agree.
The answer to flexible, changing requirements is iterative development. … TDD has nothing to say about this, or about software schedules; it is a tool for developing software within whatever requirements and schedule you do have. …
- 200k
3
votes
On which abstraction level would you do TDD?
TDD involves Unit Testing; that is, it tests methods. You have methods at all three levels of your project, not just level A. … Writing tests at level A to test functionality through levels B and C isn't TDD; it's integration testing. …
- 200k
2
votes
BDD/TDD - exhaustively testing details which are low-level, but still behaviour
Massively tedious repetition of millions of tests, as on the low-level methods, but higher up.
That's a straw man... Naturally, you're testing the same functionality higher up, but at a different …
- 200k
21
votes
How do you write unit tests for code with difficult to predict results?
The same way you write unit tests for any other kind of code:
Find some representative test cases, and test those.
Find edge cases, and test those.
Find error conditions, and test those.
Unless yo …
- 200k
11
votes
How do integration tests criticize design?
He means that good software design is better informed by unit tests than integration tests.
Here's why. Writing unit tests forces you to write code that is unit-testable. Unit-testable code tends t …
- 200k
17
votes
Whats the real overhead of TDD once the entire team is used to it?
This is especially true of TDD, where the unit test specifies the functionality of the method. …
- 200k
140
votes
Accepted
Why isn't TDD more popular in universities?
So where does TDD fit into all of this? I honestly don't know. … In your question, you appear to present TDD as a "problem solving device;" I see TDD mostly as a way to improve the design and testability of code. …
- 200k
26
votes
Writing the minimum code to pass a unit test - without cheating!
TDD is not a magic bullet for design; you still have to know how to solve problems using code, and you still have to know how to do that at a level higher than a few lines of code to make a test pass. … I do not favor reductionist TDD philosophies that claim you can grow an application by simply writing the smallest amount of code to pass a test. …
- 200k