BDD stands for "Behavior-Driven Development," a software development style that encourages cooperation between developers and stakeholders through identifying and exploring different examples of how a system or smaller element of code might work from a user's perspective.

learn more… | top users | synonyms

0
votes
1answer
668 views

Jasmine BDD vs Integration Tests

Let's say I need to write a test for the front end, in the following BDD style: A user visits buysomething.com, saves something to their wishlist, and a saved item count is updated. The result ...
1
vote
2answers
36 views

Which style to use for features that are not directly driven by humans when using BDD Gherkin language?

Should they be written same way as human workflows, first person "I have entered..." style language etc.? Is the user effectively a gender-less "AI"?
1
vote
1answer
26 views

Behat/Mink: best practice for testing strings in a web application's GUI

I'm writing acceptance tests for a web application using Behat/Mink. I want to know best practice for testing strings in the GUI. For example: say I want to test that a link exists on the homepage ...
1
vote
2answers
214 views

BDD, Cucumber best practices

I'm trying to understand some best practices when it comes to BDD and Cucumber. I've only recently started to use it, and the first feature I have written a test for is testing a search feature, more ...
3
votes
2answers
60 views

Gherkin: What is a reasonable number of scenarios per feature?

I'm keen to get thoughts on a reasonable number of scenarios per feature in Gherkin. At what point do you start to thing about re-organising the feature to keep the number of scenarios at a ...
23
votes
4answers
1k views

Is BDD actually writable by non-programmers?

Behavior-Driven Development with its emblematic “Given-When-Then” scenarios syntax has lately been quite hyped for its possible uses as a boundary object for software functionality assessment. I ...
2
votes
1answer
82 views

Javascript unit testing - mocks or fixtures?

Interested in some opnion... I'm introducing unit testing of JS into a team, it'll largely be testing modules with many dom interactions and updates. Traditionally I've always used mocks and spys ...
173
votes
8answers
99k views

What is the difference between writing test cases for BDD and TDD?

I have been learning writing test cases for BDD (Behavior Driven Development) using specflow. If I write comprehensive tests with BDD, is it necessary to write TDD (Test Driven Development) test ...
1
vote
1answer
149 views

BDD: Is it wrong to call it “Behaviour Driven *Design*”?

I learned the concept of BDD in this nice book, where the authors continuously refer to it as Behavior Driven Design, rather than using the term "Development". I've been using this definition since ...
1
vote
2answers
69 views

Git Workflow for BDD?

Recently I was working with Behavior Driven Development approach in Rails using RSpec and Capybara. Everything looks okay and it even can speed up whole planning-development bridge in my work (by ...
5
votes
4answers
3k views

Behavior Driven Development and Unit Testing in Python [closed]

We might be interested in starting to incorporate a unit test suite to our project, which is coded in Python (and it uses Redis, PostgreSQL and some third-party libraries, if that bears into the ...
17
votes
10answers
3k views

Is 100% code coverage a pipe dream?

Is it feasible to expect 100% code coverage in heavy jquery/backbonejs web applications? Is it reasonable to fail a sprint due to 100% coverage not being met when actual code coverage hovers around ...
6
votes
3answers
580 views

How to use unit tests when using BDD?

I am trying to understand BDD. I've read some articles and as I understood BDD is "the next step" from TDD. I say that because I find both to be very similar, and as I could read in this article, BDD ...
2
votes
3answers
329 views

Is TDD the best software development philosophy? [closed]

Question: Why not just use BDD-style acceptance tests and do away with unit tests, integration tests, functional tests and all other tests? I have been doing some research into the differences ...
1
vote
4answers
117 views

How handle a chain of Whens or Thens in a Scenario?

I am trying to figure out how to write BDD scenario where it seems like I need a chain of "Then" conditions. How do I write it? As one scenario? As two scenarios? Here is how I've written as one ...
3
votes
1answer
76 views

How specify acceptance criteria for randomness?

How would I express a Behavior Driven Development (BDD) acceptance criteria/story/scenario that indicates items should be random to some degree on a Home screen of an app like Instagram? Here's what ...
4
votes
3answers
405 views

Working with legacy code - introducing an external BDD integration test harness

Here's the scenario. There's a large, organically grown application written in some language and manner that makes it difficult to test. It works but is hard to maintain. Specifications are ...
3
votes
1answer
176 views

How use same Behavior Drive Development (BDD) stories across platforms?

I'm writing an app that has a client for iOS, Android, and the web. The server is hosted on Google App Engine (Java). REST is used for the communication between clients and server. In order to ensure ...
2
votes
1answer
116 views

What TDD/BDD tests should be writen to test an ORM

So I'm writing an ORM for NodeJS and using Mocha + Chai to test it. What I want to know is, what tests I should write to it, insertion tests should also have a querying test so I can check if the ...
3
votes
2answers
132 views

Can BDD and Lean methodologies be used together?

I was chatting with my product manager last week and he was bemoaning the lack of progress on our product. It's a fair criticism, too. So we got to talking about to describe the writing of ...
1
vote
1answer
187 views

Unit test approaches other than test-first and test-last? And what about variants of them? [closed]

I'm wondering if there are other approaches, old or new, to writing unit tests, and how viable they are, other than the traditional and tdd unit testing approaches. I know there is behavior-driven ...
9
votes
6answers
2k views

What is the role of QA in a BDD-driven project?

If running a project using BDD with 100% coverage of user stories with automated acceptance tests, what would be the role of a tester / quality assurance person? I guess I am imagining that ...
0
votes
1answer
62 views

Scenarios for library that will be used by developers

I've started learning BDD but I think I have some misunderstanding of how to use it correctly. Currently I'm writing an API for a product. This API will be used by other developers only. Is it ok to ...
5
votes
5answers
638 views

If we have TDD and BDD why do we need QA for? [duplicate]

If we have TDD and BDD why do we need QA for? Isn't the job of the developer to write bugs or failing tests? If this is true how a QA fit in? Thanks.
1
vote
2answers
137 views

In the BDD paradigm why should the “ubiquitous language” be merely semi-formal and not completely formal?

Here's the relevant quote: A common risk with software development includes communication breakdowns between Developers and Business Stakeholders. BDD uses the specification of desired behavior as ...
1
vote
2answers
255 views

BDD/TDD - exhaustively testing details which are low-level, but still behaviour

We're looking to concentrate more on testing behaviour (as opposed to every class/method individually) in all our automated tests, as espoused by various high-profile online discussions recently. I ...
0
votes
2answers
85 views

How to manage client expectations when working with a BDD type framework? [closed]

I've recently been investigating SpecFlow and can see the value of it for writing client/stateholder specs which can show a feature's progress however I'm nervous of introducing them to a client... ...
3
votes
2answers
161 views

BDD based on 1-liner requirements

In our team, the product owner only gives us a 1-liner summary. The developers then come up with a PoC, which the product owner reviews and the cycle repeats. The challenge here is 2-fold: Time: ...
3
votes
1answer
151 views

In BDD, going from feature to user story how does it works?

My background is the book BDD in action. How one goes from Feature to Stories? More specifically I would like to understand the following: 1- When does one provide the decomposition into stories? Do ...
4
votes
1answer
200 views

Testing gap between unit and integration: Integration in the Small, Component, Unit Integration Tests

Over the past few weeks I've been mulling and researching how to fill a gap in our testing methodology. In simplified terms unit tests are too small and traditional integration tests are too big. A ...
0
votes
1answer
251 views

In an enterprise setting, does one apply BDD principles alongside of, or instead of, “traditional” unit testing?

I have a problem visualising how the gap is closed between coarse-grained, n-tier boundary, high level, automated acceptance testing and lower level, task/sub-task scope Unit Testing. My motivation ...
2
votes
1answer
845 views

acceptance test driven development in c++

Was put on hold at stack overflow: hopefully it has value here. I want to use a BDD / TDD / ATDD approach in c++. However I really want to emphasize vertical slices of end to end functionality rather ...
1
vote
0answers
105 views

automated acceptance testing / BDD & workflow for designing a system

Recently, I started reading the book Specification by Example, which relates to automated functional testing and BDD (from what I've understood till now). I've tried using Concordion (.Net), and ...
0
votes
1answer
478 views

The user interface in a clean architecture with client / server model [closed]

I have been reading (and watching presentations) about subjects like: DDD, TDD, BDD, SOLID (principles), design patterns, clean code, clean architecture, agile project methodologies. All in all I ...
38
votes
7answers
5k views

Is it sufficient to use acceptance and integration tests instead of unit test?

Short introduction to this question. I have used now TDD and lately BDD for over one year now. I use techniques like mocking to make writing my tests more efficiently. Lately I have started a ...
6
votes
3answers
4k views

How do you unit test a User Interface? [closed]

I use JavaScript with JQuery for a Rails application. I have some dynamic behaviour in this one. As a Ruby developper, I like TDD/BDD, specialy with RSpec. For the moment, I test my JavaScript ...
3
votes
3answers
295 views

Should selenium tests be written in imperative style?

Is an automation tester supposed to know concepts of OOPS and design patterns to write Tests in a way where changes & code re-use are possible? For example, I pick up Java to write cucumber step ...
7
votes
1answer
365 views

How to use BDD to unit test a compiler?

My team is writing a compiler for a domain-specific language (DSL) which will be integrated into an IDE. Right now, we are focused on the analysis phase of the compiler. We are not using any existing ...
2
votes
2answers
837 views

What are examples of automating BDD specifications through the UI layer?

I understand it is better to automate BDD specifications below the user interface whenever possible. For example and quoting from Gojko Adzic's book: Specification by Example: Don't check ...
3
votes
1answer
125 views

BDD and behavior based on complex state

I'm wondering how to write BDD test cases for a real system. All examples I can find are trivial and do not answer the question. Sample use case/story basically goes like that: User is on the main ...
3
votes
3answers
217 views

When to write tests for a new class using BDD?

I've been practicing behaviour driven development (BDD). I understand that you have to write tests that test the behaviour of the code, and this will allow the design of your code to evolve and take ...
4
votes
1answer
209 views

Using NSpec at various architectural layers

Having read the quick start at nspec.org, I realized that NSpec might be a useful tool in a scenario which was becoming a bit cumbersome with NUnit alone. I'm adding an OAuth (or, DotNetOpenAuth) to ...
69
votes
11answers
6k views

Is there a reason that tests aren't written inline with the code that they test?

I've been reading a bit about Literate Programming recently, and it got me thinking... Well-written tests, especially BDD-style specs can do a better job at explaining what code does than prose does, ...
1
vote
0answers
537 views

atlassian confluence as source for bdd stories

I want to start using BDD in our company. The best place to keep stories from my point of view is the Atlassian Wiki pages. Obviously I expected some existing techniques for retrieving stories from ...
21
votes
10answers
2k views

Automated Testing: Explaining its Business Value

To start I don't think this is a repeat of other questions on unit testing. What I'm looking for help with is articulating its value to a team of programmers, analysts, managers and testers. By ...
4
votes
2answers
1k views

Is the difference between BDD and TDD nothing more than a vocabulary shift? [duplicate]

I recently made a start on learning BDD (Behaviour Driven Development) after watching a Google tech talk presented by David Astels. He made a very interesting case for using BDD and some of the ...
0
votes
2answers
522 views

Should I use TDD and BDD if my project is changing fast?

I have my own little project I am creating using RoR, I plan it to have small-medium load. With no doubt I started with BDD and TDD (Cucumber and RSpec to be exact, but I am also experienced with ...
4
votes
1answer
157 views

How to develop a Delete command through Behavior Driven Development?

I am trying to develop a Delete command through BDD that will simply delete an user from the database, given user_id as a parameter. What can be some possible behavioral tests that will drive me to ...
19
votes
4answers
2k views

Is BDD scalable for medium to large projects?

In every Website you read about BDD (Behaviour Driven Development) you find a very simple nice example showing you how obvious and easy is it to define your requirements. But trying to implement this ...
3
votes
2answers
1k views

Functional testing and Acceptance testing leading to redundant code

What I know is: A Functional test aims to test a single component (like a WebApp's Controller) from the point of view of the developer. => Did I achieve all the requirements to make it work well? ...