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nodejs/test/parallel/test-vm-sigint-existing-handler.js
Ruben Bridgewater e038d6a1cd
test: refactor common.expectsError
This completely refactors the `expectsError` behavior: so far it's
almost identical to `assert.throws(fn, object)` in case it was used
with a function as first argument. It had a magical property check
that allowed to verify a functions `type` in case `type` was passed
used in the validation object. This pattern is now completely removed
and `assert.throws()` should be used instead.

The main intent for `common.expectsError()` is to verify error cases
for callback based APIs. This is now more flexible by accepting all
validation possibilites that `assert.throws()` accepts as well. No
magical properties exist anymore. This reduces surprising behavior
for developers who are not used to the Node.js core code base.

This has the side effect that `common` is used significantly less
frequent.

PR-URL: https://github.com/nodejs/node/pull/31092
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
2019-12-31 15:54:20 +01:00

90 lines
2.4 KiB
JavaScript

'use strict';
const common = require('../common');
if (common.isWindows) {
// No way to send CTRL_C_EVENT to processes from JS right now.
common.skip('platform not supported');
}
const assert = require('assert');
const vm = require('vm');
const spawn = require('child_process').spawn;
const methods = [
'runInThisContext',
'runInContext'
];
if (process.argv[2] === 'child') {
const method = process.argv[3];
assert.ok(method);
let firstHandlerCalled = 0;
process.on('SIGINT', common.mustCall(() => {
firstHandlerCalled++;
// Handler attached _before_ execution.
}, 2));
let onceHandlerCalled = 0;
process.once('SIGINT', common.mustCall(() => {
onceHandlerCalled++;
// Handler attached _before_ execution.
}));
const script = `process.send('${method}'); while(true) {}`;
const args = method === 'runInContext' ?
[vm.createContext({ process })] :
[];
const options = { breakOnSigint: true };
assert.throws(
() => { vm[method](script, ...args, options); },
{
code: 'ERR_SCRIPT_EXECUTION_INTERRUPTED',
message: 'Script execution was interrupted by `SIGINT`'
});
assert.strictEqual(firstHandlerCalled, 0);
assert.strictEqual(onceHandlerCalled, 0);
// Keep the process alive for a while so that the second SIGINT can be caught.
const timeout = setTimeout(() => {}, 1000);
let afterHandlerCalled = 0;
process.on('SIGINT', common.mustCall(() => {
// Handler attached _after_ execution.
if (afterHandlerCalled++ === 0) {
// The first time it just bounces back to check that the `once()`
// handler is not called the second time.
assert.strictEqual(firstHandlerCalled, 1);
assert.strictEqual(onceHandlerCalled, 1);
process.send(method);
return;
}
assert.strictEqual(onceHandlerCalled, 1);
assert.strictEqual(firstHandlerCalled, 2);
timeout.unref();
}, 2));
process.send(method);
return;
}
for (const method of methods) {
const child = spawn(process.execPath, [__filename, 'child', method], {
stdio: [null, 'inherit', 'inherit', 'ipc']
});
child.on('message', common.mustCall(() => {
// First kill() breaks the while(true) loop, second one invokes the real
// signal handlers.
process.kill(child.pid, 'SIGINT');
}, 3));
child.on('close', common.mustCall((code, signal) => {
assert.strictEqual(signal, null);
assert.strictEqual(code, 0);
}));
}