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'use strict';
const common = require('../common');
if (!common.hasIntl)
common.skip('missing Intl');
const buffer = require('buffer');
const assert = require('assert');
const orig = Buffer.from('těst ☕', 'utf8');
// Test Transcoding
const tests = {
'latin1': [0x74, 0x3f, 0x73, 0x74, 0x20, 0x3f],
'ascii': [0x74, 0x3f, 0x73, 0x74, 0x20, 0x3f],
'ucs2': [0x74, 0x00, 0x1b, 0x01, 0x73,
0x00, 0x74, 0x00, 0x20, 0x00,
0x15, 0x26]
};
for (const test in tests) {
const dest = buffer.transcode(orig, 'utf8', test);
assert.strictEqual(dest.length, tests[test].length, `utf8->${test} length`);
for (let n = 0; n < tests[test].length; n++)
assert.strictEqual(dest[n], tests[test][n], `utf8->${test} char ${n}`);
}
{
const dest = buffer.transcode(Buffer.from(tests.ucs2), 'ucs2', 'utf8');
assert.strictEqual(dest.toString(), orig.toString());
}
{
const utf8 = Buffer.from('€'.repeat(4000), 'utf8');
const ucs2 = Buffer.from('€'.repeat(4000), 'ucs2');
const utf8_to_ucs2 = buffer.transcode(utf8, 'utf8', 'ucs2');
const ucs2_to_utf8 = buffer.transcode(ucs2, 'ucs2', 'utf8');
assert.deepStrictEqual(utf8, ucs2_to_utf8);
assert.deepStrictEqual(ucs2, utf8_to_ucs2);
assert.strictEqual(ucs2_to_utf8.toString('utf8'),
utf8_to_ucs2.toString('ucs2'));
}
assert.throws(
() => buffer.transcode(null, 'utf8', 'ascii'),
{
name: 'TypeError',
code: 'ERR_INVALID_ARG_TYPE',
message: 'The "source" argument must be an instance of Buffer ' +
'or Uint8Array. Received null'
}
);
assert.throws(
() => buffer.transcode(Buffer.from('a'), 'b', 'utf8'),
/^Error: Unable to transcode Buffer \[U_ILLEGAL_ARGUMENT_ERROR\]/
);
assert.throws(
() => buffer.transcode(Buffer.from('a'), 'uf8', 'b'),
/^Error: Unable to transcode Buffer \[U_ILLEGAL_ARGUMENT_ERROR\]$/
);
assert.deepStrictEqual(
buffer.transcode(Buffer.from('hi', 'ascii'), 'ascii', 'utf16le'),
Buffer.from('hi', 'utf16le'));
assert.deepStrictEqual(
buffer.transcode(Buffer.from('hi', 'latin1'), 'latin1', 'utf16le'),
Buffer.from('hi', 'utf16le'));
assert.deepStrictEqual(
buffer.transcode(Buffer.from('hä', 'latin1'), 'latin1', 'utf16le'),
Buffer.from('hä', 'utf16le'));
// Test that Uint8Array arguments are okay.
{
const uint8array = new Uint8Array([...Buffer.from('hä', 'latin1')]);
assert.deepStrictEqual(
buffer.transcode(uint8array, 'latin1', 'utf16le'),
Buffer.from('hä', 'utf16le'));
}
{
const dest = buffer.transcode(new Uint8Array(), 'utf8', 'latin1');
assert.strictEqual(dest.length, 0);
}
// Test that it doesn't crash
{
buffer.transcode(new buffer.SlowBuffer(1), 'utf16le', 'ucs2');
}
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