/
prepend.js
58 lines (44 loc) · 1.42 KB
/
prepend.js
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var simpleEvents = require('nodeunit').testCase;
var file = '../../lib/eventemitter2';
var EventEmitter2;
if(typeof require !== 'undefined') {
EventEmitter2 = require(file).EventEmitter2;
}
else {
EventEmitter2 = window.EventEmitter2;
}
module.exports = simpleEvents({
'1. Add a listener before another one on a single event.': function (test) {
var emitter = new EventEmitter2({ verbose: true });
var raised = false;
var second = function () {
test.ok(raised, 'The event was raised in incorrect order');
test.done();
};
emitter.on('test1', second);
var first = function () {
test.ok(!raised, 'The event was raised in incorrect order');
raised = true;
};
emitter.prependListener('test1', first);
test.equal(emitter.listeners('test1').length, 2);
test.equal(emitter.listeners('test1')[0], first);
test.equal(emitter.listeners('test1')[1], second);
emitter.emit('test1');
},
'2. prepend listener for any event' : function (test) {
var emitter = new EventEmitter2({ verbose: true });
var raised = false;
var second = function () {
test.ok(raised, 'The event was raised in incorrect order');
test.done();
};
emitter.onAny(second);
var first = function () {
test.ok(!raised, 'The event was raised in incorrect order');
raised = true;
};
emitter.prependAny(first);
emitter.emit('random');
}
});