org.jmock.core.constraint
Class IsInstanceOf

java.lang.Object
  extended by org.jmock.core.constraint.IsInstanceOf
All Implemented Interfaces:
Constraint, SelfDescribing

public class IsInstanceOf
extends Object
implements Constraint

Tests whether the value is an instance of a class.


Constructor Summary
IsInstanceOf(Class theClass)
          Creates a new instance of IsInstanceOf
 
Method Summary
 StringBuffer describeTo(StringBuffer buffer)
          Appends the description of this object to the buffer.
 boolean eval(Object arg)
          Evaluates the constraint for argument o.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

IsInstanceOf

public IsInstanceOf(Class theClass)
Creates a new instance of IsInstanceOf

Parameters:
theClass - The predicate evaluates to true for instances of this class or one of its subclasses.
Method Detail

eval

public boolean eval(Object arg)
Description copied from interface: Constraint
Evaluates the constraint for argument o.

Specified by:
eval in interface Constraint
Parameters:
arg - the object against which the constraint is evaluated.
Returns:
true if o meets the constraint, false if it does not.

describeTo

public StringBuffer describeTo(StringBuffer buffer)
Description copied from interface: SelfDescribing
Appends the description of this object to the buffer.

Specified by:
describeTo in interface SelfDescribing
Parameters:
buffer - The buffer that the description is appended to.
Returns:
The buffer passed to the invokedMethod.