4
votes
1answer
76 views

Keep or discard tests that use methods now private [duplicate]

When writing object-oriented code from scratch, I try to follow these steps: Write a test that fails. Write a function that makes the test pass. When enough tests and functions are complete, ...
2
votes
2answers
176 views

Relationship between TDD and Software Architecture/Design

I'm new to TDD and have been reading the theory since applying it is more complicated than it sounds when you're learning by yourself. As far as I know, the objective is to write test cases for each ...
9
votes
3answers
379 views

Designing unit tests for a stateful system

Background Test Driven Development was popularized after I already finished school and in the industry. I am trying to learn it, but some major things still escape me. TDD proponents say lots of ...
4
votes
1answer
271 views

If TDD is design, how do you know your TDD is well designed? [duplicate]

Given a large group (50+) of programmers: All given the same problem, All using Test-Driven Development (TDD), All pair programming, All doing group-based code review, I have personally seen the ...
1
vote
1answer
138 views

Which to implement first: GUI or backend? [closed]

So, I can code both, but which should I use a base for development? In terms of TDD, should minimal aspects in the GUI be used as the seed from which to grow towards backend logic? or should the ...
6
votes
3answers
414 views

Are “Stocks” a TDD/Unit testing anti pattern?

From Martin Fowler's Mocks Aren't Stubs he states that Stubs provide canned answers to calls made during the test while Mocks objects pre-programmed with expectations which form a specification of the ...
37
votes
9answers
4k views

Do we need Logging when doing TDD?

When doing the Red, Green & Refactor cycle we should always write the minimum code to pass the test. This is the way I have been taught about TDD and the way almost all books describe the process. ...
2
votes
2answers
259 views

On which abstraction level would you do TDD?

Problem I find myself nailing the class structure down by having too many unit tests which makes making changes hard. Example Assume we have a class A which uses classes B1 and B2. Class B1 uses ...
4
votes
1answer
255 views

Inheritance in test classes

I have an interface Serializer with methods serialize and isSerializerFor. I created a first implementation of this using TDD, and ended up with a nice clean test case fully covering a nice clean ...
2
votes
4answers
665 views

How to practice ATDD if design is not yet emerged from TDD?

Despite being very stakeholders friendly, ATDD aimed to provide a "stop" line when a feature has just been done. This avoids wasting time to add non-focused (and sometimes useless) code. That's why ...
2
votes
1answer
239 views

TDD / one test representing the whole scenario ? or should I split it? [duplicate]

While practicing TDD, I came across this specification: A user should be created with its password hashed, be persisted and an activation token should be returned. Should my first unit test, (aiming ...
0
votes
1answer
300 views

Is it worth writing a unit test for a DTO with the most basic getter/setters? [duplicate]

The advantage is it protects your DTO against future "enhancements" ?
1
vote
1answer
95 views

Production or Custom Test Data for Unit Testing?

I've recently had a little disagreement with fellow developers. We're transforming various ontologies from the original source format (Pica+, RDF, etc) into our data format and have several converters ...
18
votes
3answers
2k views

Does TDD lead to the good design? [duplicate]

I'm in transition from "writing unit tests" state to TDD. I saw as Johannes Brodwall creates quite acceptable design from avoiding any of architecture phase before. I'll ask him soon if it was real ...
6
votes
1answer
703 views

Is wrapping a third party code the only solution to unit test its consumers?

I'm doing unit testing and in one of my classes I need to send a mail from one of the methods, so using constructor injection I inject an instance of Zend_Mail class which is in Zend framework. Now ...
2
votes
2answers
226 views

Returning a mock object from a mock object

I'm trying to return an object when mocking a parser class. This is the test code using PHPUnit 3.7 //set up the result object that I want to be returned from the call to parse method ...
4
votes
4answers
178 views

How to implement isValid correctly?

I'm trying to provide a mechanism for validating my object like this: class SomeObject { private $_inputString; private $_errors=array(); public function __construct($inputString) { ...
3
votes
5answers
727 views

“TDD is about design, not verification”; concretely, what does that mean?

I've been wondering about this. What do we exactly mean by design and verification. Should I just apply TDD to make sure my code is SOLID and not check if it's external behaviour is correct? Should ...
23
votes
4answers
3k views

TDD - Outside In vs Inside Out

What is the difference between building an application Outside In vs building it Inside Out using TDD? These are the books I read about TDD and unit testing: Test Driven Development: By Example ...
9
votes
4answers
814 views

How to unit test a function that is refactored to strategy pattern?

If I have a function in my code that goes like: class Employee{ public string calculateTax(string name, int salary) { switch (name) { case "Chris": ...
2
votes
2answers
381 views

How do you end up with event-sourcing if you use a xDD approach?

When working in a TDD or BDD manner your unit tests are supposed to drive your design. But how do you end up with event-sourcing using a xDD techniques? As I see it event sourcing is something you ...
14
votes
6answers
971 views

TDD: What happens before the first unit test?

I mostly understand the theory of TDD, but I can't figure out how to get started. I sit down to write a unit test for a personal project and realize . . . I have no idea what I am testing. What ...
4
votes
6answers
299 views

Newbie worried about CASE tool

I'm looking for some guidance on CASE tools and whether my concerns are valid. Recently I was in a meeting between my employer and an external software company which have a CASE tool currently in ...
6
votes
2answers
940 views

How would you TDD the functionality of getting the corresponding process of a running windows service?

Purpose Over the last year or more I've been learning unit testing via books I've read recently like The Art of Unit Testing, Working Effectively with Legacy Code, and others. I've also been using ...