nodejs/test/parallel/test-accessor-properties.js

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// Flags: --expose-internals
'use strict';
require('../common');
// This tests that the accessor properties do not raise assertions
// when called with incompatible receivers.
const assert = require('assert');
// Objects that call StreamBase::AddMethods, when setting up
// their prototype
const { internalBinding } = require('internal/test/binding');
const TTY = internalBinding('tty_wrap').TTY;
const UDP = internalBinding('udp_wrap').UDP;
{
// Should throw instead of raise assertions
assert.throws(() => {
TTY.prototype.bytesRead;
}, TypeError);
assert.throws(() => {
TTY.prototype.fd;
}, TypeError);
assert.throws(() => {
TTY.prototype._externalStream;
}, TypeError);
assert.throws(() => {
UDP.prototype.fd;
}, TypeError);
const StreamWrapProto = Object.getPrototypeOf(TTY.prototype);
// Should not throw for Object.getOwnPropertyDescriptor
assert.strictEqual(
typeof Object.getOwnPropertyDescriptor(StreamWrapProto, 'bytesRead'),
'object'
);
assert.strictEqual(
typeof Object.getOwnPropertyDescriptor(StreamWrapProto, 'fd'),
'object'
);
assert.strictEqual(
typeof Object.getOwnPropertyDescriptor(StreamWrapProto, '_externalStream'),
'object'
);
assert.strictEqual(
typeof Object.getOwnPropertyDescriptor(StreamWrapProto, 'fd'),
'object'
);
}