IsEventFrom (jMock API Documentation)

java.lang.Object
- org.jmock.core.constraint.IsEventFrom

All Implemented Interfaces:

Constraint, SelfDescribing
```
public class IsEventFrom
extends java.lang.Object
implements Constraint
```
Tests if the value is an event announced by a specific object.

Constructor Summary

Constructors
Constructor	Description
`IsEventFrom(java.lang.Class eventClass, java.lang.Object source)`	Constructs an IsEventFrom predicate that returns true for any object derived from `event_class` announced by `source`.
`IsEventFrom(java.lang.Object source)`	Constructs an IsEventFrom predicate that returns true for any object derived from `EventObject`announced by `source`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.StringBuffer`	`describeTo(java.lang.StringBuffer buffer)`	Appends the description of this object to the buffer.
`boolean`	`eval(java.lang.Object o)`	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
  - IsEventFrom
```
public IsEventFrom(java.lang.Object source)
```
    Constructs an IsEventFrom predicate that returns true for any object derived from EventObjectannounced by source.
  - IsEventFrom
```
public IsEventFrom(java.lang.Class eventClass,
                   java.lang.Object source)
```
    Constructs an IsEventFrom predicate that returns true for any object derived from event_class announced by source.
- Method Detail
  - eval
```
public boolean eval(java.lang.Object o)
```
    Description copied from interface: Constraint
    
    Evaluates the constraint for argument o.
    
    Specified by:
    
    eval in interface Constraint
    
    Parameters:
    
    o - the object against which the constraint is evaluated.
    
    Returns:
    
    true if o meets the constraint, false if it does not.
  - describeTo
```
public java.lang.StringBuffer describeTo(java.lang.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.