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nodejs/test/simple/test-event-emitter-modify-in-emit.js
2010-02-25 11:41:11 -08:00

33 lines
820 B
JavaScript

process.mixin(require("../common"));
var events = require('events');
var callbacks_called = [ ];
var e = new events.EventEmitter();
function callback1() {
callbacks_called.push("callback1");
e.addListener("foo", callback2);
e.removeListener("foo", callback1);
}
function callback2() {
callbacks_called.push("callback2");
e.removeListener("foo", callback2);
}
e.addListener("foo", callback1);
assert.equal(1, e.listeners("foo").length);
e.emit("foo");
assert.equal(1, e.listeners("foo").length);
assert.deepEqual(["callback1"], callbacks_called);
e.emit("foo");
assert.equal(0, e.listeners("foo").length);
assert.deepEqual(["callback1", "callback2"], callbacks_called);
e.emit("foo");
assert.equal(0, e.listeners("foo").length);
assert.deepEqual(["callback1", "callback2"], callbacks_called);