1 Test that HKDF does not support methods it should not support.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 Derive 0 bits from the HKDF key
7 PASS derivedBits.byteLength is 0
8 Derive 4 bits from the HKDF key
9 PASS derivedBits.byteLength is 1
10 PASS derivedBits.getUint8(0) is 0x80
11 PASS successfullyParsed is true