Cleaned up test code files.

JSMR.Tests/Search/Creator/CreatorSearchProviderFixture.cs

@@ -0,0 +1,18 @@
+using JSMR.Infrastructure.Data;
+using JSMR.Tests.Fixtures;
+
+namespace JSMR.Tests.Search.Creator;
+
+public sealed class CreatorSearchProviderFixture(MariaDbContainerFixture container) : SearchProviderFixture(container)
+{
+    protected override async Task SeedAsync(AppDbContext context)
+    {
+        context.Creators.AddRange(
+            new() { CreatorId = 1, Name = "John Smith" },
+            new() { CreatorId = 2, Name = "John Doe", Favorite = true },
+            new() { CreatorId = 3, Name = "Jane Doe", Blacklisted = true }
+        );
+
+        await context.SaveChangesAsync();
+    }
+}