junit.runner
Class TestCaseClassLoader

java.lang.Object
  java.lang.ClassLoader
      junit.runner.TestCaseClassLoader

public class TestCaseClassLoader
extends ClassLoader

A custom class loader which enables the reloading of classes for each test run. The class loader can be configured with a list of package paths that should be excluded from loading. The loading of these packages is delegated to the system class loader. They will be shared across test runs.

The list of excluded package paths is specified in a properties file "excluded.properties" that is located in the same place as the TestCaseClassLoader class.

Known limitation: the TestCaseClassLoader cannot load classes from jar files. - Not needed for 1.0 SDK

Field Summary

(package private) static String

EXCLUDED_FILE name of excluded properties file

Constructor Summary

TestCaseClassLoader()
Constructs a TestCaseLoader.

TestCaseClassLoader(String classPath)
Constructs a TestCaseLoader.

Method Summary

URL	getResource(String name) Returns an URL which can be used to access the resource described by resName, using the class loader's resource lookup algorithm.
InputStream	getResourceAsStream(String name) Returns a stream on a resource found by looking up resName using the class loader's resource lookup algorithm.
boolean	isExcluded(String name)
(package private) boolean	isJar(String pathEntry)
Class	loadClass(String name, boolean resolve) Loads the class with the specified name, optionally linking the class after load.

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXCLUDED_FILE

static final String EXCLUDED_FILE

name of excluded properties file

See Also:

Constant Field Values

Constructor Detail

TestCaseClassLoader

public TestCaseClassLoader()

Constructs a TestCaseLoader. It scans the class path and the excluded package paths

TestCaseClassLoader

public TestCaseClassLoader(String classPath)

Constructs a TestCaseLoader. It scans the class path and the excluded package paths

Method Detail

getResource

public URL getResource(String name)

Description copied from class: ClassLoader

Returns an URL which can be used to access the resource described by resName, using the class loader's resource lookup algorithm. The default behavior is just to return null.

Overrides:

getResource in class ClassLoader

Parameters:

name - String the name of the resource to find.

Returns:

The location of the resource.

See Also:

Class.getResource(java.lang.String)

getResourceAsStream

public InputStream getResourceAsStream(String name)

Description copied from class: ClassLoader

Returns a stream on a resource found by looking up resName using the class loader's resource lookup algorithm. The default behavior is just to return null.

Overrides:

getResourceAsStream in class ClassLoader

Parameters:

name - String the name of the resource to find.

Returns:

A stream on the resource or null.

See Also:

Class.getResourceAsStream(java.lang.String)

isExcluded

public boolean isExcluded(String name)

loadClass

public Class loadClass(String name,
                       boolean resolve)
                throws ClassNotFoundException

Description copied from class: ClassLoader

Loads the class with the specified name, optionally linking the class after load. Steps are: 1) Call findLoadedClass(className) to determine if class is loaded 2) Call loadClass(className, resolveClass) on the parent loader. 3) Call findClass(className) to find the class

Overrides:

loadClass in class ClassLoader

Parameters:

name - The name of the class to search for.

resolve - Indicates if class should be resolved after loading. Note: On the android reference implementation this parameter does not have any effect.

Returns:

The Class object.

Throws:

ClassNotFoundException - if the class could not be found.

isJar

boolean isJar(String pathEntry)