Introducing TDD

Introducing TDD
Bălan Vlad
Romsoft S.R.L.

First Unit Test
DEMO - Calculator

Red Green Refactor
Read and understand requirements
Write test that follows requirements
Watch it fail
Write code that makes test pass
Refactor
Repeat

AAA
Arrange
Act
Assert

What we used
Nunit (http://nunit.org)
ReSharper(http://jetbrains.org)
TestDriven.Net (http://www.testdriven.net)

Work 
Create a CurrencyConventorclass that knows how to exchange a currency into another currency using an exchange rate.(for example EUR to RON at exchange rate 4.3)
Only two tests:
When exchange rate is 1.5 and the sum that is going to be changed is 100
When exchange rate is 2 and sum is 300

Testing the untestable
DEMO

What’s next
Mocking frameworks(RhinoMocks, NMock)
Dependency injection frameworks(StructureMap,Unity)
Other testing frameworks(xUnit, MBUnit, MSUnit)

Questions

Introducing TDD

by Vlad Balan on Dec 03, 2009

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