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| Current File : //proc/self/root/proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-crypto-randomuuid.js |
'use strict';
const common = require('../common');
if (!common.hasCrypto)
common.skip('missing crypto');
const assert = require('assert');
const {
randomUUID,
} = require('crypto');
const last = new Set([
'00000000-0000-0000-0000-000000000000',
]);
function testMatch(uuid) {
assert.match(
uuid,
/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/);
}
// Generate a number of UUID's to make sure we're
// not just generating the same value over and over
// and to make sure the batching changes the random
// bytes.
for (let n = 0; n < 130; n++) {
const uuid = randomUUID();
assert(!last.has(uuid));
last.add(uuid);
assert.strictEqual(typeof uuid, 'string');
assert.strictEqual(uuid.length, 36);
testMatch(uuid);
// Check that version 4 identifier was populated.
assert.strictEqual(
Buffer.from(uuid.substr(14, 2), 'hex')[0] & 0x40, 0x40);
// Check that clock_seq_hi_and_reserved was populated with reserved bits.
assert.strictEqual(
Buffer.from(uuid.substr(19, 2), 'hex')[0] & 0b1100_0000, 0b1000_0000);
}
// Test non-buffered UUID's
{
testMatch(randomUUID({ disableEntropyCache: true }));
testMatch(randomUUID({ disableEntropyCache: true }));
testMatch(randomUUID({ disableEntropyCache: true }));
testMatch(randomUUID({ disableEntropyCache: true }));
assert.throws(() => randomUUID(1), {
code: 'ERR_INVALID_ARG_TYPE'
});
assert.throws(() => randomUUID({ disableEntropyCache: '' }), {
code: 'ERR_INVALID_ARG_TYPE'
});
}
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