Addressed some PR comments

Author: rainkwan

internal/fwserver/server.go

@@ -6,10 +6,10 @@ package fwserver
 import (
 	"context"
 	"fmt"
-	"github.com/hashicorp/terraform-plugin-framework/action"
-	actionschema "github.com/hashicorp/terraform-plugin-framework/action/schema"
 	"sync"
 
+	"github.com/hashicorp/terraform-plugin-framework/action"
+	actionschema "github.com/hashicorp/terraform-plugin-framework/action/schema"
 	"github.com/hashicorp/terraform-plugin-framework/datasource"
 	"github.com/hashicorp/terraform-plugin-framework/diag"
 	"github.com/hashicorp/terraform-plugin-framework/ephemeral"

internal/fwserver/server_listresource.go

@@ -5,6 +5,7 @@ package fwserver
 
 import (
 	"context"
+	"github.com/hashicorp/terraform-plugin-go/tftypes"
 	"iter"
 
 	"github.com/hashicorp/terraform-plugin-framework/diag"
@@ -87,8 +88,10 @@ func (s *Server) ListResource(ctx context.Context, fwReq *ListRequest, fwStream
 	listResource := fwReq.ListResource
 
 	if fwReq.Config == nil {
-		fwStream.Results = NoListResults
-		return
+		fwReq.Config = &tfsdk.Config{
+			Raw:    tftypes.NewValue(fwReq.ResourceSchema.Type().TerraformType(ctx), nil),
+			Schema: fwReq.ResourceSchema,
+		}
 	}
 
 	req := list.ListRequest{

internal/fwserver/server_listresource_test.go

@@ -89,6 +89,20 @@ func TestServerListResource(t *testing.T) {
 			},
 			expectedStreamEvents: []fwserver.ListResult{},
 		},
+		"success-with-nil-results": {
+			server: &fwserver.Server{
+				Provider: &testprovider.Provider{},
+			},
+			request: &fwserver.ListRequest{
+				Config: &tfsdk.Config{},
+				ListResource: &testprovider.ListResource{
+					ListMethod: func(ctx context.Context, req list.ListRequest, resp *list.ListResultsStream) {
+						// Do nothing, so that resp.Results is nil
+					},
+				},
+			},
+			expectedStreamEvents: []fwserver.ListResult{},
+		},
 		"success-with-multiple-results": {
 			server: &fwserver.Server{
 				Provider: &testprovider.Provider{},