by: taylor helsper. introduction test driven development junit testing private methods tdd...
Post on 23-Dec-2015
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What is this lecture?◦ Part of a CSE 4000 Independent Study Course
◦ “Practical Issues in Software Engineering”
What’s the point?◦ To provide practical information to students in
Software Engineering topics
Introduction
Note: The products discussed in this presentation are examples used for teaching purposes and are not endorsements of the products.
What is it?
◦ Development/Testing process where tests are generated before the development
◦ Development is completed based on the tests
Test Driven Development
Why is it useful?
◦ Distinct Steps
◦ Good Metrics
◦ Ensures Completion Based on Requirements/Design
Test Driven Development
Why is it useful?
◦ Only necessary features are implemented
◦ Short Development Lifecycle
◦ Easy to Accommodate Changes
Test Driven Development
Steps
◦ Write tests based on design / requirements
◦ Write code
◦ Run tests
◦ Repeat until all tests pass
Test Driven Development
Test Driven Development
http://en.wikipedia.org/wiki/Test-driven_development
What is it?
◦ JUnit is a testing framework for Java
◦ It allows programmers to write test cases for Java classes
JUnit
Why?
◦ Better Tests
◦ Higher Probability Errors are Found
◦ Meet Regulations
Testing Standards
Code Coverage
Testing Private Methods
How?
◦ Use Reflection
◦ Java classes know info about themselves
Functions
Variables
Testing Private Methods
Test Driven Development is important to understand
TDD is useful in many circumstances
TDD◦ Saves Money◦ Is Agile◦ Offers Good Metrics
Conclusion
Junit - http://www.junit.org/
Netbeans – http://netbeans.org/
JUnit Examples - http://junit.sourceforge.net/doc/cookbook/cookbook.htm
MSU Classes and work experience
Stack Overflow for Reflection Code - http://stackoverflow.com/questions/34571/whats-the-best-way-of-unit-testing-private-methods
Real’s How To for Reflection Code - http://www.rgagnon.com/javadetails/java-0031.html
“Subverting Java Access Protection for Unit Testing” by Ross Burton. 11/12/2003. onjava.com.
References
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