diff --git a/src/Tests/SlimMessageBus.Host.Outbox.Sql.DbContext.Test/OutboxTests.cs b/src/Tests/SlimMessageBus.Host.Outbox.Sql.DbContext.Test/OutboxTests.cs
index e283eaba..a8113167 100644
--- a/src/Tests/SlimMessageBus.Host.Outbox.Sql.DbContext.Test/OutboxTests.cs
+++ b/src/Tests/SlimMessageBus.Host.Outbox.Sql.DbContext.Test/OutboxTests.cs
@@ -145,6 +145,8 @@ void ConfigureExternalBus(MessageBusBuilder mbb)
     }
 
     public const string InvalidLastname = "Exception";
+    private string[] _surnames = ["Doe", "Smith", InvalidLastname];
+
 
     [Theory]
     [InlineData([TransactionType.SqlTransaction, BusType.AzureSB, 100, SqlOutboxMessageIdGenerationMode.ClientGuidGenerator])]
@@ -160,15 +162,9 @@ public async Task Given_CommandHandlerInTransaction_When_ExceptionThrownDuringHa
         _testParamBusType = busType;
         _testParamIdGenerationMode = mode;
 
-        await PerformDbOperation(async (context, _) =>
-        {
-            // migrate db
-            await context.Database.DropSchemaIfExistsAsync(context.Model.GetDefaultSchema());
-            await context.Database.MigrateAsync();
-        });
+        await PrepareDatabase();
 
-        var surnames = new[] { "Doe", "Smith", InvalidLastname };
-        var commands = Enumerable.Range(0, messageCount).Select(x => new CreateCustomerCommand($"John {x:000}", surnames[x % surnames.Length]));
+        var commands = Enumerable.Range(0, messageCount).Select(x => new CreateCustomerCommand($"John {x:000}", _surnames[x % _surnames.Length])).ToList();
         var validCommands = commands.Where(x => !string.Equals(x.Lastname, InvalidLastname, StringComparison.InvariantCulture)).ToList();
 
         await EnsureConsumersStarted();
@@ -219,6 +215,17 @@ await PerformDbOperation(async (context, _) =>
         customerCountWithValidLastname.Should().Be(validCommands.Count);
     }
 
+    private Task PrepareDatabase()
+        => PerformDbOperation(async (context, _) =>
+        {
+            // migrate db
+            await context.Database.MigrateAsync();
+            await context.Customers.ExecuteDeleteAsync();
+#pragma warning disable EF1002 // Risk of vulnerability to SQL injection.
+            await context.Database.ExecuteSqlRawAsync($"delete from {context.Model.GetDefaultSchema()}.Outbox");
+#pragma warning restore EF1002 // Risk of vulnerability to SQL injection.
+        });
+
     [Theory]
     [InlineData([BusType.AzureSB, 100, SqlOutboxMessageIdGenerationMode.ClientGuidGenerator])]
     [InlineData([BusType.AzureSB, 100, SqlOutboxMessageIdGenerationMode.DatabaseGeneratedGuid])]
@@ -231,15 +238,10 @@ public async Task Given_PublishExternalEventInTransaction_When_ExceptionThrownDu
         _testParamTransactionType = TransactionType.TransactionScope;
         _testParamBusType = busType;
 
-        await PerformDbOperation(async (context, _) =>
-        {
-            // migrate db
-            await context.Database.DropSchemaIfExistsAsync(context.Model.GetDefaultSchema());
-            await context.Database.MigrateAsync();
-        });
+        await PrepareDatabase();
 
         var surnames = new[] { "Doe", "Smith", InvalidLastname };
-        var events = Enumerable.Range(0, messageCount).Select(x => new CustomerCreatedEvent(Guid.NewGuid(), $"John {x:000}", surnames[x % surnames.Length]));
+        var events = Enumerable.Range(0, messageCount).Select(x => new CustomerCreatedEvent(Guid.NewGuid(), $"John {x:000}", surnames[x % surnames.Length])).ToList();
         var validEvents = events.Where(x => !string.Equals(x.Lastname, InvalidLastname, StringComparison.InvariantCulture)).ToList();
 
         await EnsureConsumersStarted();