1 / 14

Introduction to Eclipse, Unit Testing and JUnit

Introduction to Eclipse, Unit Testing and JUnit. Amit Shabtay. Eclipse. Eclipse is a kind of universal tool platform - an open extensible IDE for anything and nothing in particular. plugins JDT CDT UML Many many more. Working with Eclipse – Live Demonstration. Project Views Code Assist

amil
Télécharger la présentation

Introduction to Eclipse, Unit Testing and JUnit

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction to Eclipse, Unit Testing and JUnit Amit Shabtay

  2. Eclipse • Eclipse is a kind of universal tool platform - an open extensible IDE for anything and nothing in particular. • plugins • JDT • CDT • UML • Many many more Object Oriented Design Course

  3. Working with Eclipse – Live Demonstration • Project • Views • Code Assist • Errors • Debugging • JUnit • UML Object Oriented Design Course

  4. Unit Tests • First level of testing • Done by the programmer • Part of the coding process • Delivered with the code • Part of the build process Object Oriented Design Course

  5. What’s a Unit? • Unit tests should be written in test classes, that replace ‘drivers’ • For example, class Stack • Class Stack Has push, pop, count, … • Class TestStack Has testPush, testPop • Tests are per-functionality • Not per method (testPushNull) • Not per class (testIterators) • Unit testing can have several levels Object Oriented Design Course

  6. What’s a Unit Test? • Call methods, and assert conditions void testPush() { s = new Stack(); s.push(new Integer(10)); assertEquals(s.count() == 1); } • Tests check themselves • Only output if a test fails • Write tests after writing interface • Run all tests after each change Object Oriented Design Course

  7. Running Unit Tests • A main() is required to run tests • There are better options • JUnit for Java • CppUnit for C++ • Unit Testing Frameworks • Graphical user interface • Easily choose which tests to run • Elegantly support for test suites Object Oriented Design Course

  8. Coding with Unit Tests • Part of the design process • Design for testability --> Modularity • Part of the coding process • Test-first coding • Run tests after each build • Part of the build process • Build = compile + link + pass unit tests • A.k.a. “smoke tests” Object Oriented Design Course

  9. Benefits of Unit Tests • Regression Testing • For your own code • Daily build: for others’ work • Part of the usual work • Replaces work done anyway • Causes tests to be written • Validates the design before impl Object Oriented Design Course

  10. Top 12 Reasons to Write Unit Tests Part I • Tests Reduce Bugs in New Features • Tests Reduce Bugs in Existing Features • Tests Are Good Documentation • Tests Reduce the Cost of Change Object Oriented Design Course

  11. Top 12 Reasons to Write Unit Tests Part II • Tests Improve Design • Tests Allow Refactoring • Tests Constrain Features • Tests Defend Against Other Programmers Object Oriented Design Course

  12. Top 12 Reasons to Write Unit Tests Part III • Testing Is Fun • Testing Forces You to Slow Down and Think • Testing Makes Development Faster • Tests Reduce Fear Object Oriented Design Course

  13. JUnit • Unit testing framework for Java • Open Source • Integrated into Eclipse • TestCase • setUp(), tearDown() • Test<TestName>() • TestSuite • TestRunner Object Oriented Design Course

  14. Resources • Eclipse • http://www.eclipse.org/ • http://www.eclipse-plugins.info/ • Top 12 Reasons to Write Unit Tests • http://www.onjava.com/pub/a/onjava/2003/04/02/javaxpckbk.html • JUnit • http://www.junit.org/ Object Oriented Design Course

More Related