my-idlers/node_modules/buffer/test/node/test-buffer-ascii.js

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'use strict';
var Buffer = require('../../').Buffer;
var assert = require('assert');
// ASCII conversion in node.js simply masks off the high bits,
// it doesn't do transliteration.
assert.equal(Buffer.from('hérité').toString('ascii'), 'hC)ritC)');
// 71 characters, 78 bytes. The character is a triple-byte sequence.
var input = 'Cest, graphiquement, la réunion dun accent aigu ' +
'et dun accent grave.';
var expected = 'Cb\u0000\u0019est, graphiquement, la rC)union ' +
'db\u0000\u0019un accent aigu et db\u0000\u0019un ' +
'accent grave.';
var buf = Buffer.from(input);
for (var i = 0; i < expected.length; ++i) {
assert.equal(buf.slice(i).toString('ascii'), expected.slice(i));
// Skip remainder of multi-byte sequence.
if (input.charCodeAt(i) > 65535) ++i;
if (input.charCodeAt(i) > 127) ++i;
}