diff --git a/tests/ArrayFingerprintBuilderTests.cs b/tests/ArrayFingerprintBuilderTests.cs
new file mode 100644
index 0000000..d0b3686
--- /dev/null
+++ b/tests/ArrayFingerprintBuilderTests.cs
@@ -0,0 +1,47 @@
+using System.Security.Cryptography;
+using Xunit;
+
+namespace FingerprintBuilder.Tests
+{
+    public class ArrayFingerprintBuilderTests
+    {
+        [Fact]
+        public void UserInfo_Sha1()
+        {
+            var fingerprint = FingerprintBuilder<UserInfo>
+                .Create(SHA1.Create().ComputeHash)
+                .For(p => p.Name)
+                .For(p => p.Emails)
+                .Build();
+
+            var user = new UserInfo { Name = "John", Emails = new[] { "test@test.com", "test1@test.com" } };
+
+            var hash = fingerprint(user).ToLowerHexString();
+
+            Assert.Equal("365993bbd89e2e25039848e51904679cc9e13d17", hash);
+        }
+
+        [Fact]
+        public void UserInfo_EmailsString_Sha1()
+        {
+            var fingerprint = FingerprintBuilder<UserInfo>
+                .Create(SHA1.Create().ComputeHash)
+                .For(p => p.Name)
+                .For(p => p.Emails, emails=> string.Join('|', emails))
+                .Build();
+
+            var user = new UserInfo { Name = "John", Emails = new[] { "test@test.com", "test1@test.com" } };
+
+            var hash = fingerprint(user).ToLowerHexString();
+
+            Assert.Equal("9f825a64a3eb7a7f0b4887ce09ad2a76d085a8b0", hash);
+        }
+
+        private class UserInfo
+        {
+            public string Name { get; set; }
+
+            public string[] Emails { get; set; }
+        }
+    }
+}
diff --git a/tests/FingerprintBuilder.Tests.csproj b/tests/FingerprintBuilder.Tests.csproj
index 509a7c4..138c690 100644
--- a/tests/FingerprintBuilder.Tests.csproj
+++ b/tests/FingerprintBuilder.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netcoreapp3.0</TargetFramework>
     <IsPackable>false</IsPackable>
diff --git a/tests/FingerprintBuilderTests.cs b/tests/SimpleFingerprintBuilderTests.cs
similarity index 98%
rename from tests/FingerprintBuilderTests.cs
rename to tests/SimpleFingerprintBuilderTests.cs
index 126eee4..b15ba7a 100644
--- a/tests/FingerprintBuilderTests.cs
+++ b/tests/SimpleFingerprintBuilderTests.cs
@@ -3,7 +3,7 @@
 
 namespace FingerprintBuilder.Tests
 {
-    public class FingerprintBuilderTests
+    public class SimpleFingerprintBuilderTests
     {
         [Fact]
         public void UserInfo_Sha1()