node/test/parallel/test-vm-module-reevaluate.js

52 lines
1.1 KiB
JavaScript

'use strict';
// Flags: --experimental-vm-modules
const common = require('../common');
const assert = require('assert');
const { SourceTextModule } = require('vm');
const finished = common.mustCall();
(async function main() {
{
globalThis.count = 0;
const m = new SourceTextModule('count += 1;');
await m.link(common.mustNotCall());
assert.strictEqual(await m.evaluate(), undefined);
assert.strictEqual(globalThis.count, 1);
assert.strictEqual(await m.evaluate(), undefined);
assert.strictEqual(globalThis.count, 1);
assert.strictEqual(await m.evaluate(), undefined);
assert.strictEqual(globalThis.count, 1);
delete globalThis.count;
}
{
const m = new SourceTextModule('throw new Error()');
await m.link(common.mustNotCall());
let threw = false;
try {
await m.evaluate();
} catch (err) {
assert(err instanceof Error);
threw = true;
}
assert(threw);
threw = false;
try {
await m.evaluate();
} catch (err) {
assert(err instanceof Error);
threw = true;
}
assert(threw);
}
finished();
})().then(common.mustCall());