diff --git a/test/BraunauMobil.VeloBasar.Tests/BusinessLogic/TransactionServiceTests/GetAsync.cs b/test/BraunauMobil.VeloBasar.Tests/BusinessLogic/TransactionServiceTests/GetAsync.cs
index f3f7b3a..a8b09c7 100644
--- a/test/BraunauMobil.VeloBasar.Tests/BusinessLogic/TransactionServiceTests/GetAsync.cs
+++ b/test/BraunauMobil.VeloBasar.Tests/BusinessLogic/TransactionServiceTests/GetAsync.cs
@@ -34,7 +34,7 @@ public async Task ByIdWithAmount_ShouldReturnTransactionWithIdAndChangeShouldBeA
         await Db.SaveChangesAsync();
 
         //  Act
-        TransactionEntity result = await Sut.GetAsync(toGet.Id);
+        TransactionEntity result = await Sut.GetAsync(toGet.Id, amountGiven);
 
         //  Assert
         using (new AssertionScope())
diff --git a/test/BraunauMobil.VeloBasar.Tests/Mockups/StringLocalizerMock.cs b/test/BraunauMobil.VeloBasar.Tests/Mockups/StringLocalizerMock.cs
index 1bd8924..3c27977 100644
--- a/test/BraunauMobil.VeloBasar.Tests/Mockups/StringLocalizerMock.cs
+++ b/test/BraunauMobil.VeloBasar.Tests/Mockups/StringLocalizerMock.cs
@@ -1,8 +1,9 @@
 using Microsoft.Extensions.Localization;
+using System.Text;
 
 namespace BraunauMobil.VeloBasar.Tests.Mockups;
 
-public class StringLocalizerMock
+public class StringLocalizerMock(IFormatProvider formatProvider)
     : IStringLocalizer<SharedResources>
 
 {
@@ -23,7 +24,18 @@ public LocalizedString this[string name]
             ArgumentNullException.ThrowIfNull(name);
             ArgumentNullException.ThrowIfNull(arguments);
 
-            string value = $"{name}_{string.Join('_', arguments)}";
+            StringBuilder argsString = new();
+            foreach (object argument in arguments)
+            {
+                string argString = string.Format(formatProvider, "{0}", argument);
+                if (argsString.Length > 0)
+                {
+                    argsString.Append('_');
+                }
+                argsString.Append(argString);
+            }
+
+            string value = $"{name}_{argsString}";
             return new(name, value);
         }
     }
diff --git a/test/BraunauMobil.VeloBasar.Tests/X.cs b/test/BraunauMobil.VeloBasar.Tests/X.cs
index 6889c17..77ca79c 100644
--- a/test/BraunauMobil.VeloBasar.Tests/X.cs
+++ b/test/BraunauMobil.VeloBasar.Tests/X.cs
@@ -10,7 +10,7 @@ public static class X
 
     public static IFormatProvider FormatProvider { get; } = CultureInfo.GetCultureInfo("de-AT");
 
-    public static IStringLocalizer<SharedResources> StringLocalizer { get; } = new StringLocalizerMock();
+    public static IStringLocalizer<SharedResources> StringLocalizer { get; } = new StringLocalizerMock(FormatProvider);
 
     public static Action<ServiceDescriptor> CreateInspector<TServiceType, TImplementationType>(ServiceLifetime lifetime)
         => item =>