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// Flags: --expose-internals
// This tests interoperability between TextEncoder and TextDecoder with
// Node.js util.inspect and Buffer APIs
'use strict';
require('../common');
const assert = require('assert');
const { customInspectSymbol: inspect } = require('internal/util');
const encoded = Buffer.from([0xef, 0xbb, 0xbf, 0x74, 0x65,
0x73, 0x74, 0xe2, 0x82, 0xac]);
// Make Sure TextEncoder exists
assert(TextEncoder);
// Test TextEncoder
{
const enc = new TextEncoder();
assert.strictEqual(enc.encoding, 'utf-8');
assert(enc);
const buf = enc.encode('\ufefftest€');
assert.strictEqual(Buffer.compare(buf, encoded), 0);
}
{
const enc = new TextEncoder();
const buf = enc.encode();
assert.strictEqual(buf.length, 0);
}
{
const enc = new TextEncoder();
const buf = enc.encode(undefined);
assert.strictEqual(buf.length, 0);
}
{
const inspectFn = TextEncoder.prototype[inspect];
const encodeFn = TextEncoder.prototype.encode;
const encodingGetter =
Object.getOwnPropertyDescriptor(TextEncoder.prototype, 'encoding').get;
const instance = new TextEncoder();
const expectedError = {
code: 'ERR_INVALID_THIS',
name: 'TypeError',
message: 'Value of "this" must be of type TextEncoder'
};
inspectFn.call(instance, Infinity, {});
encodeFn.call(instance);
encodingGetter.call(instance);
const invalidThisArgs = [{}, [], true, 1, '', new TextDecoder()];
invalidThisArgs.forEach((i) => {
assert.throws(() => inspectFn.call(i, Infinity, {}), expectedError);
assert.throws(() => encodeFn.call(i), expectedError);
assert.throws(() => encodingGetter.call(i), expectedError);
});
}
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