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'use strict'; const common = require('../../common'); const assert = require('assert'); const child_process = require('child_process'); const test_async = require(`./build/${common.buildType}/test_async`); const testException = 'test_async_cb_exception'; // Exception thrown from async completion callback. // (Tested in a spawned process because the exception is fatal.) if (process.argv[2] === 'child') { test_async.Test(1, {}, common.mustCall(function() { throw new Error(testException); })); return; } const p = child_process.spawnSync( process.execPath, [ __filename, 'child' ]); assert.ifError(p.error); assert.ok(p.stderr.toString().includes(testException)); // Successful async execution and completion callback. test_async.Test(5, {}, common.mustCall(function(err, val) { assert.strictEqual(err, null); assert.strictEqual(val, 10); process.nextTick(common.mustCall()); })); // Async work item cancellation with callback. test_async.TestCancel(common.mustCall());