forked from mirrors/gecko-dev
e49b2c49c2
Automatic update from web-platform-tests Make crypto.randomUUID regexp test more strict (#30119) Previously this test passed with UUIDs that mistakenly had prefixes/suffixes. -- wpt-commits: 9bdea1cdcffa45d9a8d5ac34693272651e7efe8d wpt-pr: 30119
42 lines
1.4 KiB
JavaScript
42 lines
1.4 KiB
JavaScript
// Run for enough iterations that we're likely to catch edge-cases, like
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// failing to set a reserved bit:
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const iterations = 256;
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// Track all the UUIDs generated during test run, bail if we ever collide:
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const uuids = new Set()
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function randomUUID() {
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const uuid = self.crypto.randomUUID();
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if (uuids.has(uuid)) {
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throw new Error(`uuid collision ${uuid}`)
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}
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uuids.add(uuid);
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return uuid;
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}
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// UUID is in namespace format (16 bytes separated by dashes):
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test(function() {
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const UUIDRegex = /^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
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for (let i = 0; i < iterations; i++) {
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assert_true(UUIDRegex.test(randomUUID()));
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}
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}, "namespace format");
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// Set the 4 most significant bits of array[6], which represent the UUID
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// version, to 0b0100:
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test(function() {
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for (let i = 0; i < iterations; i++) {
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let value = parseInt(randomUUID().split('-')[2].slice(0, 2), 16);
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value &= 0b11110000;
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assert_true(value === 0b01000000);
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}
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}, "version set");
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// Set the 2 most significant bits of array[8], which represent the UUID
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// variant, to 0b10:
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test(function() {
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for (let i = 0; i < iterations; i++) {
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// Grab the byte representing array[8]:
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let value = parseInt(randomUUID().split('-')[3].slice(0, 2), 16);
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value &= 0b11000000
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assert_true(value === 0b10000000);
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}
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}, "variant set");
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