Package org.onlab.junit

Class TestUtils

java.lang.Object

org.onlab.junit.TestUtils

public final class TestUtils
extends Object

Utilities for testing.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TestUtils.TestUtilsException	Exception that can be thrown if problems are encountered while executing the utility method.

Method Summary

Modifier and Type	Method	Description
static <T> T	callConstructor(Constructor<T> constructor)	Triggers an allocation of an object of type T and forces a call to the private constructor.
static <T,U> U	callMethod(T subject, String methodName, Class<?>[] paramTypes, Object... args)	Calls the method, bypassing scope restriction.
static <T,U> U	callMethod(T subject, String methodName, Class<?> paramType, Object arg)	Calls the method, bypassing scope restriction.
static <T,U> U	getField(T subject, String fieldName)	Gets the field, bypassing scope restriction.
static <T,U> void	setField(T subject, String fieldName, U value)	Sets the field, bypassing scope restriction.

Methods inherited from class java.lang.Object

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

Method Detail

setField

public static <T,U> void setField(T subject,
                                        String fieldName,
                                        U value)
                                 throws TestUtils.TestUtilsException

Sets the field, bypassing scope restriction.

Type Parameters:

T - subject type

U - value type

Parameters:

subject - Object where the field belongs

fieldName - name of the field to set

value - value to set to the field.

Throws:

TestUtils.TestUtilsException - if there are reflection errors while setting the field

getField

public static <T,U> U getField(T subject,
                                     String fieldName)
                              throws TestUtils.TestUtilsException

Gets the field, bypassing scope restriction.

Type Parameters:

T - subject type

U - fieldO value type

Parameters:

subject - Object where the field belongs

fieldName - name of the field to get

Returns:

value of the field.

Throws:

TestUtils.TestUtilsException - if there are reflection errors while getting the field

callMethod

public static <T,U> U callMethod(T subject,
                                       String methodName,
                                       Class<?>[] paramTypes,
                                       Object... args)
                                throws TestUtils.TestUtilsException

Calls the method, bypassing scope restriction.

Type Parameters:

T - subject type

U - return value type

Parameters:

subject - Object where the method belongs

methodName - name of the method to call

paramTypes - formal parameter type array

args - arguments

Returns:

return value or null if void

Throws:

TestUtils.TestUtilsException - if there are reflection errors while calling the method

callMethod

public static <T,U> U callMethod(T subject,
                                       String methodName,
                                       Class<?> paramType,
                                       Object arg)
                                throws TestUtils.TestUtilsException

Calls the method, bypassing scope restriction.

Type Parameters:

T - subject type

U - return value type

Parameters:

subject - Object where the method belongs

methodName - name of the method to call

paramType - formal parameter type

arg - argument

Returns:

return value or null if void

Throws:

TestUtils.TestUtilsException - if there are reflection errors while calling the method

callConstructor

public static <T> T callConstructor(Constructor<T> constructor)
                             throws TestUtils.TestUtilsException

Triggers an allocation of an object of type T and forces a call to the private constructor.

Type Parameters:

T - type of the object to create

Parameters:

constructor - Constructor to call

Returns:

created object of type T

Throws:

TestUtils.TestUtilsException - if there are reflection errors while calling the constructor