var Fiber = require('fibers');
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var Future = require('future');
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// Possible outputs:
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// pass: exception is thrown and caught in uncaughtException
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// fail: exception is thrown and not caught
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// no output: process dies
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var thrown = false;
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var caught = false;
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var async = function(continuation) {
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process.nextTick(function() {
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continuation();
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});
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}
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process.on('uncaughtException', function(err) {
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if (err.message === 'Catch me if you can') {
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caught = true;
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} else {
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throw err;
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}
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});
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// This fiber's job is to throw an exception after yielding.
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Fiber(function() {
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// yield and resume via Future.wait() and its cb() helper
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var sync = Future.wrap(async)();
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sync.wait();
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// this should get rethrown to the main event loop
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thrown = true;
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throw new Error('Catch me if you can');
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}).run();
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// This fiber's job is to make sure the process is still alive after the
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// exception was thrown.
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Fiber(function() {
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// wait for other fiber to throw exception and yield
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while (!thrown) {
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var sync = Future.wrap(async)();
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sync.wait();
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}
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// wait once more to allow exception to get caught
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process.nextTick(function() {
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// see if we have noticed the exception we expect to
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console.log(caught ? 'pass' : 'fail');
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});
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}).run();
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