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vm: properly handle defining symbol props
This PR is a follow-up of nodejs#46615. When bumping V8 for node 18, various bugs appeared around vm. Some have been fixed along the flow, but there is at least one remaining and described at: jestjs/jest#13338. The current fix does nothing on node 20: the new bump of v8 done for node 20 seems to fix it. But it would fix the problem in both node 18 and node 19. I confirmed it would fix node 19 by cherry-picking the commit on v19.x-staging and launching `make -j4 jstest` on it. PR-URL: nodejs#47572 Reviewed-By: James M Snell <jasnell@gmail.com>
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,105 @@ | ||
'use strict'; | ||
require('../common'); | ||
const assert = require('assert'); | ||
const vm = require('vm'); | ||
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// These assertions check that we can set new keys to the global context, | ||
// get them back and also list them via getOwnProperty* or in. | ||
// | ||
// Related to: | ||
// - https://github.com/nodejs/node/issues/45983 | ||
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const global = vm.runInContext('this', vm.createContext()); | ||
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function runAssertions(data, property, viaDefine, value1, value2, value3) { | ||
// Define the property for the first time | ||
setPropertyAndAssert(data, property, viaDefine, value1); | ||
// Update the property | ||
setPropertyAndAssert(data, property, viaDefine, value2); | ||
// Delete the property | ||
deletePropertyAndAssert(data, property); | ||
// Re-define the property | ||
setPropertyAndAssert(data, property, viaDefine, value3); | ||
// Delete the property again | ||
deletePropertyAndAssert(data, property); | ||
} | ||
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const fun1 = () => 1; | ||
const fun2 = () => 2; | ||
const fun3 = () => 3; | ||
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function runAssertionsOnSandbox(builder) { | ||
const sandboxContext = vm.createContext({ runAssertions, fun1, fun2, fun3 }); | ||
vm.runInContext(builder('this'), sandboxContext); | ||
vm.runInContext(builder('{}'), sandboxContext); | ||
} | ||
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// Assertions on: define property | ||
runAssertions(global, 'toto', true, 1, 2, 3); | ||
runAssertions(global, Symbol.for('toto'), true, 1, 2, 3); | ||
runAssertions(global, 'tutu', true, fun1, fun2, fun3); | ||
runAssertions(global, Symbol.for('tutu'), true, fun1, fun2, fun3); | ||
runAssertions(global, 'tyty', true, fun1, 2, 3); | ||
runAssertions(global, Symbol.for('tyty'), true, fun1, 2, 3); | ||
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// Assertions on: direct assignment | ||
runAssertions(global, 'titi', false, 1, 2, 3); | ||
runAssertions(global, Symbol.for('titi'), false, 1, 2, 3); | ||
runAssertions(global, 'tata', false, fun1, fun2, fun3); | ||
runAssertions(global, Symbol.for('tata'), false, fun1, fun2, fun3); | ||
runAssertions(global, 'tztz', false, fun1, 2, 3); | ||
runAssertions(global, Symbol.for('tztz'), false, fun1, 2, 3); | ||
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// Assertions on: define property from sandbox | ||
runAssertionsOnSandbox( | ||
(variable) => ` | ||
runAssertions(${variable}, 'toto', true, 1, 2, 3); | ||
runAssertions(${variable}, Symbol.for('toto'), true, 1, 2, 3); | ||
runAssertions(${variable}, 'tutu', true, fun1, fun2, fun3); | ||
runAssertions(${variable}, Symbol.for('tutu'), true, fun1, fun2, fun3); | ||
runAssertions(${variable}, 'tyty', true, fun1, 2, 3); | ||
runAssertions(${variable}, Symbol.for('tyty'), true, fun1, 2, 3);` | ||
); | ||
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// Assertions on: direct assignment from sandbox | ||
runAssertionsOnSandbox( | ||
(variable) => ` | ||
runAssertions(${variable}, 'titi', false, 1, 2, 3); | ||
runAssertions(${variable}, Symbol.for('titi'), false, 1, 2, 3); | ||
runAssertions(${variable}, 'tata', false, fun1, fun2, fun3); | ||
runAssertions(${variable}, Symbol.for('tata'), false, fun1, fun2, fun3); | ||
runAssertions(${variable}, 'tztz', false, fun1, 2, 3); | ||
runAssertions(${variable}, Symbol.for('tztz'), false, fun1, 2, 3);` | ||
); | ||
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// Helpers | ||
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// Set the property on data and assert it worked | ||
function setPropertyAndAssert(data, property, viaDefine, value) { | ||
if (viaDefine) { | ||
Object.defineProperty(data, property, { | ||
enumerable: true, | ||
writable: true, | ||
value: value, | ||
configurable: true, | ||
}); | ||
} else { | ||
data[property] = value; | ||
} | ||
assert.strictEqual(data[property], value); | ||
assert.ok(property in data); | ||
if (typeof property === 'string') { | ||
assert.ok(Object.getOwnPropertyNames(data).includes(property)); | ||
} else { | ||
assert.ok(Object.getOwnPropertySymbols(data).includes(property)); | ||
} | ||
} | ||
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// Delete the property from data and assert it worked | ||
function deletePropertyAndAssert(data, property) { | ||
delete data[property]; | ||
assert.strictEqual(data[property], undefined); | ||
assert.ok(!(property in data)); | ||
assert.ok(!Object.getOwnPropertyNames(data).includes(property)); | ||
assert.ok(!Object.getOwnPropertySymbols(data).includes(property)); | ||
} |
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