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Java Source Code / Java Documentation » Development » Javolution » javolution.testing 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   javolution.testing.TestCase

TestCase
abstract public class TestCase (Code)

This class represents a test case which can be used for validation, performance and regression tests.

The structure of a test case is as follow:[code] class MyTestCase extends TestCase { // Prepares data/state in which to run the test. public void prepare() { ... } // Optional // Executes the test (it may exercise the test case several times). public void execute() { ... } // Mandatory. // Returns the number of times the test case has been exercised (default 1). public int count() { ... } // Optional // Validates the results. public void validate() { ... } // Optional. // Cleanups after execution (e.g. release resources). public void cleanup() { ... } // Optional }[/code] It should be noted that some testing contexts (e.g. TimeContext ) may run the sequence (prepare, execute, validate, cleanup) multiple times to calculate for example the average execution time ( TestCase.validate validation in that case is performed only once after the last run). Here is an example of test case implementation for the HashMap.put(key, value) method:[code] class HashMap_put extends TestCase { private HashMap _map; private int _size; public HashMap_put(int n) { _size = 0; Index.setMinimumRange(0, n); // Preallocates. } public void prepare() { _map = new HashMap(); } public void execute() { for (int i=0; i < _size;) { _map.put(Index.valueOf(i), Index.valueOf(i++)); } } public int count() { // Number of put operations performed. return _size; } public void validate() { TestContext.assertTrue("Wrong size", _size == _map.size()); for (int i=0; i < _size;) { if (!TestContext.assertEquals(_map.get(Index.valueOf(i)), Index.valueOf(i++))) break; // Error, no need to continue. } // Asserts performance. long avgTime = TimeContext.getAverageTime("ns"); TestContext.assertTrue(avgTime + "ns too slow!", avgTime < 100); } public CharSequence getDescription() { return "java.util.HashMap.put(key, value) - " + n + " entries added"; } };[/code] Test cases are typically grouped into a TestSuite :[code] public HashMapTests extends TestSuite { public void run() { TestContext.info("Test put(key, value) for various size"); TestContext.test(new HashMap_put(10)); TestContext.test(new HashMap_put(100)); TestContext.test(new HashMap_put(1000)); ... } } TimeContext.enter(); // To measure execution time. try { new HashMapTests().run(); } finally { TimeContext.exit(); }[/code]


author:
   Jean-Marie Dautelle
version:
   5.2, August 5, 2007
See Also:   TestContext



Constructor Summary
protected  TestCase()
     Default constructor.

Method Summary
public  voidcleanup()
     Cleanup once test is complete (the default implementation does nothing).
public  intcount()
     The number of times the test case is exercised (default 1).
abstract public  voidexecute()
     Executes this test case (possibly multiple times in which case the TestCase.count() method should be overriden).
public  CharSequencegetDescription()
     Returns the description of this test case or null if none.
public  voidprepare()
     Prepares the test case execution (the default implementation does nothing).
public  StringtoString()
     Returns the String representation of this test case (the description or the class name by default). the string representation of this test case.
public  voidvalidate()
     Validates the test results (the default implementation does nothing).


Constructor Detail
TestCase
protected TestCase()(Code)
Default constructor.




Method Detail
cleanup
public void cleanup()(Code)
Cleanup once test is complete (the default implementation does nothing).



count
public int count()(Code)
The number of times the test case is exercised (default 1). the number of test case occurences in TestCase.execute.



execute
abstract public void execute()(Code)
Executes this test case (possibly multiple times in which case the TestCase.count() method should be overriden).



getDescription
public CharSequence getDescription()(Code)
Returns the description of this test case or null if none. the description or null



prepare
public void prepare()(Code)
Prepares the test case execution (the default implementation does nothing).



toString
public String toString()(Code)
Returns the String representation of this test case (the description or the class name by default). the string representation of this test case.



validate
public void validate()(Code)
Validates the test results (the default implementation does nothing).



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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