org.onlab.junit

Class UtilityClassChecker

java.lang.Object

org.onlab.junit.UtilityClassChecker

public class UtilityClassChecker
extends Object

Hamcrest style class for verifying that a class follows the accepted rules for utility classes. The rules that are enforced for utility classes: - the class must be declared final - the class must have only one constructor - the constructor must be private and inaccessible to callers - the class must have only static methods

Constructor Summary

Constructors

Constructor and Description
UtilityClassChecker()

Method Summary

Modifier and Type	Method and Description
static void	assertThatClassIsUtility(Class<?> clazz) Assert that the given class adheres to the utility class rules.
void	describeMismatch(org.hamcrest.Description description) Describe why an error was reported.
void	describeTo(org.hamcrest.Description description) Describe the source object that caused an error, using a Hamcrest Matcher style interface.

Methods inherited from class java.lang.Object

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

Constructor Detail

UtilityClassChecker

public UtilityClassChecker()

Method Detail

describeMismatch

public void describeMismatch(org.hamcrest.Description description)

Describe why an error was reported. Uses Hamcrest style Description interfaces.

Parameters:

description - the Description object to use for reporting the mismatch

describeTo

public void describeTo(org.hamcrest.Description description)

Describe the source object that caused an error, using a Hamcrest Matcher style interface. In this case, it always returns that we are looking for a properly defined utility class.

Parameters:

description - the Description object to use to report the "to" object

assertThatClassIsUtility

public static void assertThatClassIsUtility(Class<?> clazz)

Assert that the given class adheres to the utility class rules.

Parameters:

clazz - the class to check

Throws:

AssertionError - if the class is not a valid utility class