public void Version5UuidTest()
{
string name1 = "Hello";
string name2 = "World";
Guid salt1 = new Guid("A911588C-DB0A-41D2-AF64-EBEC037294D0");
Guid salt2 = new Guid("88B56025-60BC-4FE9-AA3F-1148BD0C653E");
Guid result11 = UuidHelper.GetVersion5Uuid(salt1, name1);
Guid result12 = UuidHelper.GetVersion5Uuid(salt1, name2);
Guid result21 = UuidHelper.GetVersion5Uuid(salt2, name1);
Guid result22 = UuidHelper.GetVersion5Uuid(salt2, name2);
// Validate against a hard-coded expected result.
Assert.AreEqual(new Guid("C3091B3B-5718-5928-8CBF-41298EF7C614"), result11);
// All results should be different (changing either name or salt alters the UUID).
Assert.AreNotEqual(result11, result12);
Assert.AreNotEqual(result11, result21);
Assert.AreNotEqual(result11, result22);
Assert.AreNotEqual(result12, result21);
Assert.AreNotEqual(result12, result22);
Assert.AreNotEqual(result21, result22);
// Hashing the same inputs a second time should give the same results as before.
Assert.AreEqual(result11, UuidHelper.GetVersion5Uuid(salt1, name1));
Assert.AreEqual(result12, UuidHelper.GetVersion5Uuid(salt1, name2));
Assert.AreEqual(result21, UuidHelper.GetVersion5Uuid(salt2, name1));
Assert.AreEqual(result22, UuidHelper.GetVersion5Uuid(salt2, name2));
// All should be marked as standard RFC 4122 UUID variant.
Assert.AreEqual(2, GetUuidVariant(result11));
Assert.AreEqual(2, GetUuidVariant(result12));
Assert.AreEqual(2, GetUuidVariant(result21));
Assert.AreEqual(2, GetUuidVariant(result22));
// All should be marked as version 5 (SHA-1 name-based) UUID.
Assert.AreEqual(5, GetUuidVersion(result11));
Assert.AreEqual(5, GetUuidVersion(result12));
Assert.AreEqual(5, GetUuidVersion(result21));
Assert.AreEqual(5, GetUuidVersion(result22));
// Sanity check our GetUuidVariant and GetUUidVersion methods against standard (version 4) UUIDs.
Assert.AreEqual(2, GetUuidVariant(salt1));
Assert.AreEqual(2, GetUuidVariant(salt2));
Assert.AreEqual(4, GetUuidVersion(salt1));
Assert.AreEqual(4, GetUuidVersion(salt2));
}
