BDD frameworks for .NET / C#

What BDD frameworks for .NET / C# are actively maintained? Let’s try some of them out!

What #BDD frameworks for #dotnet / #csharp are missing from @dwozn list at https://t.co/Ad1i9bU2Zs
— Henrik Lau Eriksson (@hlaueriksson) July 25, 2016

I will try actively maintained projects that:

Is open source
Is available on NuGet
Has published a release this year

I group the frameworks into two categories:

Behavior-driven development (BDD)
- Specifications written and read by developers.
Specification by example (SBE)
- Specifications written and read by developers, testers and business analysts (Three Amigos).

Frameworks for Behavior-driven development:

LightBDD
Machine.Specifications (MSpec)
NSpec
SpecsFor
xBehave.net

Frameworks for Specification by example:

Concordion.NET
SpecFlow

I’ll use ReSharper as my testrunner when it’s possible.

You can view the code at https://github.com/hlaueriksson/ConductOfCode

The subject

The stack, a last-in-first-out (LIFO) collection:

Stack<T>

The specifications will test the behavior of:

Empty vs nonempty stack
Peek() and Pop() methods
InvalidOperationException

Stack

Now I will let the code speak for itself…

LightBDD

Dependencies: NUnit | MbUnit | MsTest | xUnit
NuGet: https://www.nuget.org/packages/LightBDD/
Source: https://github.com/Suremaker/LightBDD

LightBDD

Console output during test execution:

FEATURE: [LIFO] Stack feature
  In order to support last-in-first-out (LIFO) operations
  As a developer
  I want to use a stack

SCENARIO: [Empty] Empty stack
  STEP 1/4: GIVEN an empty stack...
  STEP 1/4: GIVEN an empty stack (Passed after <1ms)
  STEP 2/4: THEN it has no elements...
  STEP 2/4: THEN it has no elements (Passed after 1ms)
  STEP 3/4: AND it throws an exception when calling pop...
  STEP 3/4: AND it throws an exception when calling pop (Passed after 2ms)
  STEP 4/4: AND it throws an exception when calling peek...
  STEP 4/4: AND it throws an exception when calling peek (Passed after <1ms)
  SCENARIO RESULT: Passed after 17ms

SCENARIO: [Not empty] Non empty stack
  STEP 1/7: GIVEN a non empty stack...
  STEP 1/7: GIVEN a non empty stack (Passed after 1ms)
  STEP 2/7: WHEN calling peek...
  STEP 2/7: WHEN calling peek (Passed after <1ms)
  STEP 3/7: THEN it returns the top element...
  STEP 3/7: THEN it returns the top element (Passed after 5ms)
  STEP 4/7: BUT it does not remove the top element...
  STEP 4/7: BUT it does not remove the top element (Passed after <1ms)
  STEP 5/7: WHEN calling pop...
  STEP 5/7: WHEN calling pop (Passed after <1ms)
  STEP 6/7: THEN it returns the top element...
  STEP 6/7: THEN it returns the top element (Passed after <1ms)
  STEP 7/7: AND it removes the top element...
  STEP 7/7: AND it removes the top element (Passed after <1ms)
  SCENARIO RESULT: Passed after 17ms

View the commit on GitHub: 513f0fce52ce63073fe662f9a1279b879399d99d

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