The document discusses unit testing with NUnit in C#. It defines what a unit test is and describes NUnit as an open source unit testing framework for .NET similar to JUnit. It provides information on how to do unit testing in C# with NUnit including assertions, attributes, best practices, advantages like isolation and flexibility, and disadvantages like maintenance cost. Finally, it lists similar unit testing tools for other programming languages.

1. Dinuka Malinda Peiris Malalanayake
Associate QA Engineer -Excel Technology Lanka

2. BACKGROUND
 What is an Unit testing?
 About Nunit.
“Any Unit Test is better than none”
 How to do the Unit testing with C#?
 Nunit Assertion.
 Nunit Attributes.
 Best Practice
 Advantages
 Disadvantages
 Similar Products.

3. WHAT IS AN UNIT TESTING?
 A unit test is a procedure used to verify that a
particular module of source code is working
“Any Unit Test is better than none”
properly
 Company wants to achieve three related goals
 Faster time-to-market
 Higher quality
 More flexibility

4. ABOUT NUNIT.
 NUnit is an open source unit testing
framework for Microsoft.NET.
“Any Unit Test is better than none”
 It serves the same purpose as JUnit does in
the Java world, and is one of many in
the xUnit family
 Provide both GUI and Console

5. HOW TO DO THE UNIT TESTING WITH C#?
“Any Unit Test is better than none”

6. NUNIT ASSERTION
 Equality
 Identity
“Any Unit Test is better than none”
 Comparison
 Condition
 String

7. NUNIT ATTRIBUTES
 Test Fixture
 Test
“Any Unit Test is better than none”
 Setup
 Teardown
 Test Fixture Setup/ Teardown
 Expected Exception
 Platform
 Category
 Explicit
 Suite
 Ignore

8. BEST PRACTICE
 No conditional logic – Switch, if
 No loops
“Any Unit Test is better than none”
 No exception catching
 Use appropriate method names
 Informative assertion message
 Separation per type

9. ADVANTAGES
 Fast
 Test Isolation
“Any Unit Test is better than none”
 Environment Isolation – Use Mock Objects
 Unit testing gives you a safety net when
programmers refactor or add functionality
 Unit tests can be used as documentation for other
programmers
 Development process becomes more flexible

10. DISADVANTAGES
 Unnecessary Unit Tests can lead to considerably
high maintenance cost to your overall project
“Any Unit Test is better than none”

11. SIMILAR PRODUCTS
Programming Language Unit Testing Tool
Java – J2SE / J2EE Junit
Java – J2ME
“Any Unit Test is better than none”
JMUnit
C CUnit
C++ CppUnit
php PHPUnit
Python PyUnit / py.test