Expectation (Vert.x Stack - Docs 4.5.11 API)

All Known Subinterfaces:

HttpResponseExpectation

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface Expectation<V>
```
An expectation, very much like a predicate with the ability to provide a meaningful description of the failure.
Expectation can be used with Future.expecting(Expectation).

Author:

Julien Viet

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default Expectation<V>`	`and(Expectation<? super V> other)` Returned an expectation succeeding when this expectation and the `other` expectation succeeds.
`default Throwable`	`describe(V value)` Turn an invalid `value` into an exception describing the failure, the default implementation returns a generic exception.
`default Expectation<V>`	`or(Expectation<? super V> other)` Returned an expectation succeeding when this expectation or the `other` expectation succeeds.
`boolean`	`test(V value)` Check the `value`, this should be side effect free, the expectation should either succeed returning `true` or fail returning `false`.
`default Expectation<V>`	`wrappingFailure(java.util.function.BiFunction<V,Throwable,Throwable> descriptor)` Returns a new expectation with the same predicate and a customized error `descriptor`.

- Method Detail
  - test
```
boolean test(V value)
```
    Check the value, this should be side effect free, the expectation should either succeed returning true or fail returning false.
    
    Parameters:
    
    value - the checked value
  - and
```
default Expectation<V> and(Expectation<? super V> other)
```
    Returned an expectation succeeding when this expectation and the other expectation succeeds.
    
    Parameters:
    
    other - the other expectation
    
    Returns:
    
    an expectation that is a logical and of this and other
  - or
```
default Expectation<V> or(Expectation<? super V> other)
```
    Returned an expectation succeeding when this expectation or the other expectation succeeds.
    
    Parameters:
    
    other - the other expectation
    
    Returns:
    
    an expectation that is a logical or of this and other
  - describe
```
default Throwable describe(V value)
```
    Turn an invalid value into an exception describing the failure, the default implementation returns a generic exception.
    
    Parameters:
    
    value - the value to describe
    
    Returns:
    
    a meaningful exception
  - wrappingFailure
```
default Expectation<V> wrappingFailure(java.util.function.BiFunction<V,Throwable,Throwable> descriptor)
```
    Returns a new expectation with the same predicate and a customized error descriptor.
    
    Parameters:
    
    descriptor - the function describing the error
    
    Returns:
    
    a new expectation describing the error with descriptor

Interface Expectation<V>

Method Summary

Method Detail

test

and

or

describe

wrappingFailure