diff --git a/SabreTools.Hashing.Test/HashToolTests.cs b/SabreTools.Hashing.Test/HashToolTests.cs
new file mode 100644
index 0000000..0ad3ed4
--- /dev/null
+++ b/SabreTools.Hashing.Test/HashToolTests.cs
@@ -0,0 +1,125 @@
+using System;
+using System.IO;
+using Xunit;
+
+namespace SabreTools.Hashing.Test
+{
+    public class HashToolTests
+    {
+        private static readonly string _hashFilePath = Path.Combine(Environment.CurrentDirectory, "TestData", "file-to-hash.bin");
+
+        #region Known File Information
+
+        private const long _hashFileSize = 125;
+        private const string _crc32 = "ba02a660";
+        private const string _crc64 = "a0e0009c18b5338d";
+        private const string _md5 = "b722871eaa950016296184d026c5dec9";
+        private const string _sha1 = "eea1ee2d801d830c4bdad4df3c8da6f9f52d1a9f";
+        private const string _sha256 = "fdb02dee8c319c52087382c45f099c90d0b6cc824850aff28c1bfb2884b7b855";
+        private const string _sha384 = "e276c49618fff25bc1fe2e0659cd0ef0e7c1186563b063e07c52323b9899f3ce9b091be04d6208444b3ef1265e879074";
+        private const string _sha512 = "15d69514eb628c2403e945a7cafd1d27e557f6e336c69b63ea17e7ed9d256cc374ee662f09305836d6de37fdae59d83883b982aa8446e4ff26346b6b6b50b240";
+        private const string _spamsum = "3:hMCPQCE6AFQxWyENFACBE+rW6Tj7SMQmKozr9MVERk:hZRdxZENFs+rPSromek";
+        private const string _xxhash32 = "8e331daa";
+        private const string _xxhash64 = "082bf6f0a49e1e18";
+        private const string _xxhash3 = "040474eb0eda9ff2";
+        private const string _xxhash128 = "d934b4b4a5e1e11baeef8012fbcd11e8";
+
+        #endregion
+
+        [Fact]
+        public void GetStandardHashesTest()
+        {
+            bool gotHashes = HashTool.GetStandardHashes(_hashFilePath, out long actualSize, out string? crc32, out string? md5, out string? sha1);
+
+            Assert.True(gotHashes);
+            Assert.Equal(_hashFileSize, actualSize);
+            Assert.Equal(_crc32, crc32);
+            Assert.Equal(_md5, md5);
+            Assert.Equal(_sha1, sha1);
+        }
+
+        [Fact]
+        public void GetFileHashesTest()
+        {
+            var hashDict = HashTool.GetFileHashes(_hashFilePath);
+
+            Assert.NotNull(hashDict);
+            Assert.Equal(_crc32, hashDict[HashType.CRC32]);
+            Assert.Equal(_crc64, hashDict[HashType.CRC64]);
+            Assert.Equal(_md5, hashDict[HashType.MD5]);
+            Assert.Equal(_sha1, hashDict[HashType.SHA1]);
+            Assert.Equal(_sha256, hashDict[HashType.SHA256]);
+            Assert.Equal(_sha384, hashDict[HashType.SHA384]);
+            Assert.Equal(_sha512, hashDict[HashType.SHA512]);
+            Assert.Equal(_spamsum, hashDict[HashType.SpamSum]);
+            Assert.Equal(_xxhash32, hashDict[HashType.XxHash32]);
+            Assert.Equal(_xxhash64, hashDict[HashType.XxHash64]);
+            Assert.Equal(_xxhash3, hashDict[HashType.XxHash3]);
+            Assert.Equal(_xxhash128, hashDict[HashType.XxHash128]);
+        }
+
+        [Fact]
+        public void GetFileHashesAndSizeTest()
+        {
+            var hashDict = HashTool.GetFileHashesAndSize(_hashFilePath, out long actualSize);
+
+            Assert.Equal(_hashFileSize, actualSize);
+            Assert.NotNull(hashDict);
+            Assert.Equal(_crc32, hashDict[HashType.CRC32]);
+            Assert.Equal(_crc32, hashDict[HashType.CRC32]);
+            Assert.Equal(_crc64, hashDict[HashType.CRC64]);
+            Assert.Equal(_md5, hashDict[HashType.MD5]);
+            Assert.Equal(_sha1, hashDict[HashType.SHA1]);
+            Assert.Equal(_sha256, hashDict[HashType.SHA256]);
+            Assert.Equal(_sha384, hashDict[HashType.SHA384]);
+            Assert.Equal(_sha512, hashDict[HashType.SHA512]);
+            Assert.Equal(_spamsum, hashDict[HashType.SpamSum]);
+            Assert.Equal(_xxhash32, hashDict[HashType.XxHash32]);
+            Assert.Equal(_xxhash64, hashDict[HashType.XxHash64]);
+            Assert.Equal(_xxhash3, hashDict[HashType.XxHash3]);
+            Assert.Equal(_xxhash128, hashDict[HashType.XxHash128]);
+        }
+    
+        [Fact]
+        public void GetByteArrayHashesTest()
+        {
+            byte[] fileBytes = File.ReadAllBytes(_hashFilePath);
+            var hashDict = HashTool.GetByteArrayHashes(fileBytes);
+
+            Assert.NotNull(hashDict);
+            Assert.Equal(_crc32, hashDict[HashType.CRC32]);
+            Assert.Equal(_crc64, hashDict[HashType.CRC64]);
+            Assert.Equal(_md5, hashDict[HashType.MD5]);
+            Assert.Equal(_sha1, hashDict[HashType.SHA1]);
+            Assert.Equal(_sha256, hashDict[HashType.SHA256]);
+            Assert.Equal(_sha384, hashDict[HashType.SHA384]);
+            Assert.Equal(_sha512, hashDict[HashType.SHA512]);
+            Assert.Equal(_spamsum, hashDict[HashType.SpamSum]);
+            Assert.Equal(_xxhash32, hashDict[HashType.XxHash32]);
+            Assert.Equal(_xxhash64, hashDict[HashType.XxHash64]);
+            Assert.Equal(_xxhash3, hashDict[HashType.XxHash3]);
+            Assert.Equal(_xxhash128, hashDict[HashType.XxHash128]);
+        }
+
+        [Fact]
+        public void GetStreamHashesTest()
+        {
+            var fileStream = File.OpenRead(_hashFilePath);
+            var hashDict = HashTool.GetStreamHashes(fileStream);
+
+            Assert.NotNull(hashDict);
+            Assert.Equal(_crc32, hashDict[HashType.CRC32]);
+            Assert.Equal(_crc64, hashDict[HashType.CRC64]);
+            Assert.Equal(_md5, hashDict[HashType.MD5]);
+            Assert.Equal(_sha1, hashDict[HashType.SHA1]);
+            Assert.Equal(_sha256, hashDict[HashType.SHA256]);
+            Assert.Equal(_sha384, hashDict[HashType.SHA384]);
+            Assert.Equal(_sha512, hashDict[HashType.SHA512]);
+            Assert.Equal(_spamsum, hashDict[HashType.SpamSum]);
+            Assert.Equal(_xxhash32, hashDict[HashType.XxHash32]);
+            Assert.Equal(_xxhash64, hashDict[HashType.XxHash64]);
+            Assert.Equal(_xxhash3, hashDict[HashType.XxHash3]);
+            Assert.Equal(_xxhash128, hashDict[HashType.XxHash128]);
+        }
+    }
+}
\ No newline at end of file
diff --git a/SabreTools.Hashing.Test/SabreTools.Hashing.Test.csproj b/SabreTools.Hashing.Test/SabreTools.Hashing.Test.csproj
new file mode 100644
index 0000000..5e54824
--- /dev/null
+++ b/SabreTools.Hashing.Test/SabreTools.Hashing.Test.csproj
@@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
+    <IsPackable>false</IsPackable>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Remove="TestData\*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Content Include="TestData\*">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="xunit" Version="2.6.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.4">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SabreTools.Hashing\SabreTools.Hashing.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/SabreTools.Hashing.Test/TestData/file-to-hash.bin b/SabreTools.Hashing.Test/TestData/file-to-hash.bin
new file mode 100644
index 0000000..7724139
--- /dev/null
+++ b/SabreTools.Hashing.Test/TestData/file-to-hash.bin
@@ -0,0 +1 @@
+This is just a file that has a known set of hashes to make sure that everything with hashing is still working as anticipated.
\ No newline at end of file
diff --git a/SabreTools.Hashing.sln b/SabreTools.Hashing.sln
index 4bc4d90..b5fcb40 100644
--- a/SabreTools.Hashing.sln
+++ b/SabreTools.Hashing.sln
@@ -5,6 +5,8 @@ VisualStudioVersion = 17.0.31903.59
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SabreTools.Hashing", "SabreTools.Hashing\SabreTools.Hashing.csproj", "{F7E34528-080E-4E60-B9D1-8ADF70A24BB0}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SabreTools.Hashing.Test", "SabreTools.Hashing.Test\SabreTools.Hashing.Test.csproj", "{A2BCBFDE-685B-4817-B724-050A99E02601}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -18,5 +20,9 @@ Global
 		{F7E34528-080E-4E60-B9D1-8ADF70A24BB0}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F7E34528-080E-4E60-B9D1-8ADF70A24BB0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F7E34528-080E-4E60-B9D1-8ADF70A24BB0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A2BCBFDE-685B-4817-B724-050A99E02601}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A2BCBFDE-685B-4817-B724-050A99E02601}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A2BCBFDE-685B-4817-B724-050A99E02601}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A2BCBFDE-685B-4817-B724-050A99E02601}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal