Improved asynchronous code in Marten tests (#7747)

Author: glen-84

src/HotChocolate/Marten/test/Data.Marten.Filters.Tests/FilterVisitorTestBase.cs

@@ -28,7 +28,7 @@ protected async Task<IRequestExecutor> CreateSchemaAsync<TEntity, T>(
         where T : FilterInputType<TEntity>
     {
         var dbName = $"DB_{Guid.NewGuid():N}";
-        Container.Resource.CreateDatabaseAsync(dbName).GetAwaiter().GetResult();
+        await Container.Resource.CreateDatabaseAsync(dbName);
         var store = DocumentStore.For(Container.Resource.GetConnectionString(dbName));
 
         var resolver = await BuildResolverAsync(store, entities);
@@ -56,7 +56,7 @@ protected async Task<IRequestExecutor> CreateSchemaAsync<TEntity, T>(
 
         var schema = builder.Create();
 
-        return new ServiceCollection()
+        return await new ServiceCollection()
             .Configure<RequestExecutorSetup>(
                 Schema.DefaultName,
                 o => o.Schema = schema)
@@ -79,8 +79,7 @@ protected async Task<IRequestExecutor> CreateSchemaAsync<TEntity, T>(
             .Services
             .BuildServiceProvider()
             .GetRequiredService<IRequestExecutorResolver>()
-            .GetRequestExecutorAsync()
-            .Result;
+            .GetRequestExecutorAsync();
     }
 
     private void ApplyConfigurationToField<TEntity, TType>(

src/HotChocolate/Marten/test/Data.Marten.Sorting.Tests/SortVisitorTestBase.cs

@@ -87,7 +87,7 @@ protected async Task<IRequestExecutor> CreateSchemaAsync<TEntity, T>(
         where T : SortInputType<TEntity>
     {
         var dbName = $"DB_{Guid.NewGuid():N}";
-        Container.Resource.CreateDatabaseAsync(dbName).GetAwaiter().GetResult();
+        await Container.Resource.CreateDatabaseAsync(dbName);
         var store = DocumentStore.For(Container.Resource.GetConnectionString(dbName));
 
         var resolver = await BuildResolverAsync(store, entities);
@@ -113,7 +113,7 @@ protected async Task<IRequestExecutor> CreateSchemaAsync<TEntity, T>(
 
         var schema = builder.Create();
 
-        return new ServiceCollection()
+        return await new ServiceCollection()
             .Configure<RequestExecutorSetup>(
                 Schema.DefaultName,
                 o => o.Schema = schema)
@@ -136,8 +136,7 @@ protected async Task<IRequestExecutor> CreateSchemaAsync<TEntity, T>(
             .Services
             .BuildServiceProvider()
             .GetRequiredService<IRequestExecutorResolver>()
-            .GetRequestExecutorAsync()
-            .Result;
+            .GetRequestExecutorAsync();
     }
 
     private void ApplyConfigurationToField<TEntity, TType>(