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jDefend: One Configuration File for All Your Test Scenarios  : Page 2

How would you like to have a test driver that you don't need to recompile every time input parameters change?


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Test the StudentManager Class with jDefend
To test the functionality of the StudentManager class, you ordinarily would take one of the following three approaches:

  • Hard code the test data inside your test driver. That is, create the Student object by hard coding all the data fields.
  • Write a test driver class that accepts command line parameters.
  • Read the data from a file.

    Not only do all these approaches require a good bit of coding, they also are inflexible. If you added a new attribute to the Student class, you'd have to re-code and re-compile the test driver to accommodate the new change.

    To see how jDefend offers a better solution for this situation, add a new attribute called Address (see Listing 3: Address.java below) to the Student class. Address is another java class, which has the address details of the Student object.



    
    Listing 3: Address.java
    package example; public class Address { String street; String state; String city; String zip; public void setStreet(String val) { street = val; } public void setState(String val) { state = val; } public void setCity(String val) { city = val; } public void setZip(String val) { zip = val; } }

    With jDefend, you need to change only the XML-formatted configuration file to accommodate this new class. You set all your input values, method participation attributes, etc. in this one file.

    Implement a test driver class called StdMgrTestDriver to test the StudentManager class. To write your test driver class, just extend it from the jDefend.TestDriver.

    
    StdMgrTestDriver.java
    package example; import testSuite.*; public class StdMgrTestDriver extends TestDriver { StudentManager mgr = new StudentManager(); public boolean testAdd(Student s) { mgr.add(s); return true; } public boolean testRemove(Student s) { mgr.remove(s); return true; } public boolean testFindStudent(String name) { Student std = mgr.findStudent(name); if (std == null) { return false; } return true; } }


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