test: refactor test-whatwg-webstreams-encoding to be shorter

PR-URL: #54569 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>

Author: hidaviddong

test/parallel/test-whatwg-webstreams-encoding.js

@@ -45,32 +45,15 @@ const kEuro = Buffer.from([0xe2, 0x82, 0xac]).toString();
  assert.strictEqual(tds.encoding, 'utf-8');
  assert.strictEqual(tds.fatal, false);
  assert.strictEqual(tds.ignoreBOM, false);
-
- assert.throws(
- () => Reflect.get(TextDecoderStream.prototype, 'encoding', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
- assert.throws(
- () => Reflect.get(TextDecoderStream.prototype, 'fatal', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
- assert.throws(
- () => Reflect.get(TextDecoderStream.prototype, 'ignoreBOM', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
- assert.throws(
- () => Reflect.get(TextDecoderStream.prototype, 'readable', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
- assert.throws(
- () => Reflect.get(TextDecoderStream.prototype, 'writable', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
+ ['encoding', 'fatal', 'ignoreBOM', 'readable', 'writable'].forEach((getter) => {
+ assert.throws(
+ () => Reflect.get(TextDecoderStream.prototype, getter, {}), {
+ name: 'TypeError',
+ message: /Cannot read private member/,
+ stack: new RegExp(`at get ${getter}`)
+ }
+ );
+ });
 }
 
 {
@@ -91,20 +74,13 @@ const kEuro = Buffer.from([0xe2, 0x82, 0xac]).toString();
  ]).then(common.mustCall());
 
  assert.strictEqual(tds.encoding, 'utf-8');
-
- assert.throws(
- () => Reflect.get(TextEncoderStream.prototype, 'encoding', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
- assert.throws(
- () => Reflect.get(TextEncoderStream.prototype, 'readable', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
- assert.throws(
- () => Reflect.get(TextEncoderStream.prototype, 'writable', {}), {
- name: 'TypeError',
- message: /Cannot read private member/,
- });
+ ['encoding', 'readable', 'writable'].forEach((getter) => {
+ assert.throws(
+ () => Reflect.get(TextDecoderStream.prototype, getter, {}), {
+ name: 'TypeError',
+ message: /Cannot read private member/,
+ stack: new RegExp(`at get ${getter}`)
+ }
+ );
+ });
 }