Setup solution

ModernKeePassLib.Test/Keys/CompositeKeyTests.cs

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+using ModernKeePassLib.Cryptography.KeyDerivation;
+using ModernKeePassLib.Keys;
+using ModernKeePassLib.Utility;
+using Xunit;
+
+namespace ModernKeePassLib.Test.Keys
+{
+    public class CompositeKeyTests
+    {
+        [Fact]
+        public void TestGenerateKey32()
+        {
+            var originalKey = new byte[32];
+            var expectedKey = new byte[]
+            {
+                0xF0, 0xED, 0x57, 0xD5, 0xF0, 0xDA, 0xF3, 0x47,
+                0x90, 0xD0, 0xDB, 0x43, 0x25, 0xC6, 0x81, 0x2C,
+                0x81, 0x6A, 0x0D, 0x94, 0x96, 0xA9, 0x03, 0xE1,
+                0x20, 0xD4, 0x3A, 0x3E, 0x45, 0xAD, 0x02, 0x65
+            };
+            const ulong rounds = 1;
+
+            var composite = new CompositeKey();
+            AesKdf kdf = new AesKdf();
+            KdfParameters p = kdf.GetDefaultParameters();
+            p.SetUInt64(AesKdf.ParamRounds, rounds);
+            p.SetByteArray(AesKdf.ParamSeed, originalKey);
+            var key = composite.GenerateKey32(p);
+            Assert.NotNull(key);
+            var keyData = key.ReadData();
+            Assert.True(MemUtil.ArraysEqual(keyData, expectedKey));
+        }
+    }
+}