New resource asserter

[jubianchi]

See atoum/atoum#535

$this
    ->resource($variable)
        ->isOfType('stream')
        ->isStream()
        ->type
            ->isEqualTo('stream')
;

Both assertions are equivalent here. To sum-up:

• the phpResource asserter is aliased to resource
• phpResource:: isOfType() will compare the type of the given resource against a string (->isOfType('stream'))
• phpResource:: is*() will match the type of the stream against a pattern computed from the method name: ->isFooBar() will try to match a stream with type foo bar, fooBar, foo_bar, ...
• phpResource::$type is an helper providing a string asserter on the stream type so that the user can do things like ->type->matches('/foo.*bar/')

[Hywan]

Yup, ->type fallbacks to the string asserters.

[Grummfy]

not sure to understand this. you speak about stream but it's resource, not stream...

ping @jubianchi & @Hywan