2 files changed, 29 insertions, 0 deletions
diff --git a/tests/Jellyfin.Server.Implementations.Tests/Jellyfin.Server.Implementations.Tests.csproj b/tests/Jellyfin.Server.Implementations.Tests/Jellyfin.Server.Implementations.Tests.csproj
index 174f29b09..c3b3155fe 100644
--- a/tests/Jellyfin.Server.Implementations.Tests/Jellyfin.Server.Implementations.Tests.csproj
+++ b/tests/Jellyfin.Server.Implementations.Tests/Jellyfin.Server.Implementations.Tests.csproj
@@ -39,6 +39,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\Emby.Server.Implementations\Emby.Server.Implementations.csproj" />
+    <ProjectReference Include="..\..\Jellyfin.Server.Implementations\Jellyfin.Server.Implementations.csproj" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
diff --git a/tests/Jellyfin.Server.Implementations.Tests/Users/UserManagerTests.cs b/tests/Jellyfin.Server.Implementations.Tests/Users/UserManagerTests.cs
new file mode 100644
index 000000000..9bcd43bc0
--- /dev/null
+++ b/tests/Jellyfin.Server.Implementations.Tests/Users/UserManagerTests.cs
@@ -0,0 +1,28 @@
+using System;
+using Jellyfin.Server.Implementations.Users;
+using Xunit;
+
+namespace Jellyfin.Server.Implementations.Tests.Users
+{
+    public class UserManagerTests
+    {
+        [Theory]
+        [InlineData("this_is_valid", true)]
+        [InlineData("this is also valid", true)]
+        [InlineData(" ", false)]
+        [InlineData("", false)]
+        [InlineData("0@_-' .", true)]
+        public void ThrowIfInvalidUsername_WhenInvalidUsername_ThrowsArgumentException(string username, bool isValid)
+        {
+            var ex = Record.Exception(() => UserManager.ThrowIfInvalidUsername(username));
+
+            var argumentExceptionNotThrown = ex is not ArgumentException;
+            if (ex != null)
+            {
+                Assert.Equal(typeof(ArgumentException), ex.GetType());
+            }
+
+            Assert.Equal(isValid, argumentExceptionNotThrown);
+        }
+    }
+}