Package dk.netarkivet.testutils

Class ReflectUtils

java.lang.Object

dk.netarkivet.testutils.ReflectUtils

public class ReflectUtils
extends Object

Methods that help in doing common reflection tasks.

Constructor Summary

Constructors

Constructor	Description
ReflectUtils()

Method Summary

Modifier and Type	Method	Description
static <T> Constructor<T>	getPrivateConstructor(Class<T> c, Class<?>... args)	Look up a private constructor and make it accessible for testing.
static <T> Field	getPrivateField(Class<?> c, String fieldName)	Look up a private field and make it accessible for testing.
static Method	getPrivateMethod(Class<?> c, String name, Class<?>... args)	Look up a private method and make it accessible for testing.
static void	testUtilityConstructor(Class c)	Method for testing the constructor of a utility class (the constructor should be private).

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectUtils

public ReflectUtils()

Method Detail

getPrivateMethod

public static Method getPrivateMethod(Class<?> c,
                                      String name,
                                      Class<?>... args)
                               throws NoSuchMethodException

Look up a private method and make it accessible for testing.

Parameters:

c - Class to look in.

name - Name of the method.

args - Arguments for the method. Note that primitive types are found using XXX.TYPE.

Returns:

Method object, accessible for calling.

Throws:

NoSuchMethodException

getPrivateField

public static <T> Field getPrivateField(Class<?> c,
                                        String fieldName)
                                 throws NoSuchFieldException

Look up a private field and make it accessible for testing.

Parameters:

c - The class that declares the field.

fieldName - The name of the field.

Returns:

The field, which can now be set.

Throws:

NoSuchFieldException - If there is no such field declared in the class.

getPrivateConstructor

public static <T> Constructor<T> getPrivateConstructor(Class<T> c,
                                                       Class<?>... args)
                                                throws NoSuchMethodException

Look up a private constructor and make it accessible for testing.

Parameters:

c - Class to look in.

args - Arguments for the constructor. Note that primitive types are found using XXX.TYPE.

Returns:

Constructor object, accessible for calling.

Throws:

NoSuchMethodException

testUtilityConstructor

public static void testUtilityConstructor(Class c)

Method for testing the constructor of a utility class (the constructor should be private).