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ttl.js
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ttl.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. A listener added with `once` should only listen once and then be removed.': function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
emitter.once(type, function () {
test.ok(true, 'The event was raised once');
});
emitter.emit(type);
emitter.emit(type);
test.expect(1);
test.done();
},
'2. A listener with a TTL of 4 should only listen 4 times.': function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
emitter.many(type, 4, function (value1) {
test.ok(true, 'The event was raised 4 times.');
});
emitter.emit(type, 1);
emitter.emit(type, 2);
emitter.emit(type, 3);
emitter.emit(type, 4);
emitter.emit(type, 5);
test.expect(4);
test.done();
},
'3. A listener with a TTL of 4 should only listen 4 times and pass parameters.': function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
emitter.many(type, 4, function (value1, value2, value3) {
test.ok(typeof value1 !== 'undefined', 'got value 1');
test.ok(typeof value2 !== 'undefined', 'got value 2');
test.ok(typeof value3 !== 'undefined', 'got value 3');
});
emitter.emit(type, 1, 'A', false);
emitter.emit(type, 2, 'A', false);
emitter.emit(type, 3, 'A', false);
emitter.emit(type, 4, 'A', false);
emitter.emit(type, 5, 'A', false);
test.done();
},
'4. Remove an event listener by signature.': function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
var count = 0;
function f1(event) {
"event A";
test.ok(true, 'The event was raised less than 3 times.');
}
emitter.on(type, f1);
function f2(event) {
"event B";
test.ok(true, 'The event was raised less than 3 times.');
}
emitter.on(type, f2);
function f3(event) {
"event C";
test.ok(true, 'The event was raised less than 3 times.');
}
emitter.on(type, f3);
emitter.removeListener(type, f2);
emitter.emit(type);
test.expect(2);
test.done();
},
'5. `removeListener` and `once`': function(test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
var functionA = function() { test.ok(true, 'Event was fired'); };
emitter.once(type, functionA);
emitter.removeListener(type, functionA);
emitter.emit(type);
test.expect(0);
test.done();
},
'6. Listening with a wildcard on once' : function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.*';
var functionA = function() { test.ok(true, 'Event was fired'); };
emitter.once(type, functionA);
emitter.on(type,functionA);
emitter.emit(type); //2
emitter.emit(type); //1
test.expect(3);
test.done();
},
'7. Emitting with a wildcard targeted at once' : function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
var type2 = 'test1.foo.*';
var functionA = function() { test.ok(true, 'Event was fired'); };
emitter.once(type, functionA);
emitter.emit(type2);
emitter.emit(type2);
test.expect(1);
test.done();
},
'8. Emitting with a multi-level wildcard on once': function(test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var i = 0;
var type = 'test1.**';
var functionA = function(n) {
return function() {
console.log(n, this.event);
test.ok(true, 'Event was fired');
};
}
emitter.once(type, functionA(i++));
emitter.on(type, functionA(i++));
emitter.emit(type); //2
emitter.emit(type); //1
test.expect(3);
test.done();
},
'9. Emitting with a multi-level wildcard targeted at once' : function (test) {
var emitter = new EventEmitter2({
wildcard : true,
verbose : true
});
var type = 'test1.foo.bar';
var type2 = 'test1.**';
var functionA = function() { test.ok(true, 'Event was fired'); };
emitter.once(type, functionA);
emitter.emit(type2);
emitter.emit(type2);
test.expect(1);
test.done();
}
});