expector

expector
========
node, test, emitter
#####Expector
``
var e = new require('expector').Expector();
e.expect( 'a' );
e.expect( 'b' );
e.emit( 'b' );
e.check(); // => fails, missing 'a' event
`
#####SeqExpector
`
var e = new require('expector').SeqExpector();
e.expect( 'first' );
e.expect( 'second' );
e.emit( 'second' ); // => fails, expecting first
`
#####Custom asserter
`
var e = new SeqExpector(DIY.assert);
e.check(); // => fails, no expectations
``