Squashed commit of the following:

commit 6c1667be23597513537f8190e2f55d65eb9b7c7a
Author: vnugent <public@vaughnnugent.com>
Date:   Fri Mar 22 12:01:53 2024 -0400

    refactor: Overhauled native library loading and lazy init

commit ebf688f2f974295beabf7b5def7e6f6f150551d0
Author: vnugent <public@vaughnnugent.com>
Date:   Wed Mar 20 22:16:17 2024 -0400

    refactor: Update compression header files and macros + Ci build

commit 9c7b564911080ccd5cbbb9851a0757b05e1e9047
Author: vnugent <public@vaughnnugent.com>
Date:   Tue Mar 19 21:54:49 2024 -0400

    refactor: JWK overhaul & add length getter to FileUpload

commit 6d8c3444e09561e5957491b3cc1ae858e0abdd14
Author: vnugent <public@vaughnnugent.com>
Date:   Mon Mar 18 16:13:20 2024 -0400

    feat: Add FNV1a software checksum and basic correction tests

commit 00d182088cecefc08ca80b1faee9bed3f215f40b
Author: vnugent <public@vaughnnugent.com>
Date:   Fri Mar 15 01:05:27 2024 -0400

    chore: #6 Use utils filewatcher instead of built-in

commit d513c10d9895c6693519ef1d459c6a5a76929436
Author: vnugent <public@vaughnnugent.com>
Date:   Sun Mar 10 21:58:14 2024 -0400

    source tree project location updated

1 files changed, 47 insertions, 0 deletions

diff --git a/lib/Hashing.Portable/tests/Fnv1aTests.cs b/lib/Hashing.Portable/tests/Fnv1aTests.cs
new file mode 100644
index 0000000..2c6431f
--- /dev/null
+++ b/lib/Hashing.Portable/tests/Fnv1aTests.cs
@@ -0,0 +1,47 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+using System.Text;
+
+using VNLib.Hashing.Checksums;
+
+namespace VNLib.Hashing.Tests
+{
+    [TestClass()]
+    public class Fnv1aTests
+    {
+        const string KnownDataInputUtf81 = "Hello world, this is a test of the FNV1a algorithm";
+        const string KnownData64ChecksumHex1 = "033b9d1635f1c2ad";
+
+        const string KnownDataInputUtf82 = "Hello world, this is another, slightly different test of the FNV1a algorithm!";
+        const string KnownData64ChecksumHex2 = "a802c807e941c5d3";
+
+        [TestMethod()]
+        public void Fnv1a64Known1()
+        {
+            TestKnownData(KnownDataInputUtf81, KnownData64ChecksumHex1);
+            TestKnownData(KnownDataInputUtf82, KnownData64ChecksumHex2);
+        }
+      
+        static void TestKnownData(string input, string knownChecksumHex)
+        {
+            byte[] knownInput = Encoding.UTF8.GetBytes(input);
+            ulong knownChecksum = Convert.ToUInt64(knownChecksumHex, 16);
+
+            ulong checksum = FNV1a.Compute64(knownInput);
+
+            Assert.AreEqual(knownChecksum, checksum);
+
+            //Split input into 2 parts
+            byte[] part1 = knownInput[..(knownInput.Length / 2)];
+            byte[] part2 = knownInput[(knownInput.Length / 2)..];
+
+            //Compute checksum of part1
+            ulong checksum1 = FNV1a.Compute64(part1);
+            ulong outputChecksum = FNV1a.Update64(checksum1, part2);
+
+            Assert.AreNotEqual(checksum1, outputChecksum);
+            Assert.AreEqual(knownChecksum, outputChecksum);
+        }
+
+    }
+}
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