fix(module,store): allow querying on _id, _createdAt, _updatedAt attributes

pkg/storage/testsuite/document_store_ops.go

@@ -6,7 +6,6 @@ import (
 
 	"forge.cadoles.com/arcad/edge/pkg/storage"
 	"forge.cadoles.com/arcad/edge/pkg/storage/filter"
-	"github.com/davecgh/go-spew/spew"
 	"github.com/pkg/errors"
 )
 
@@ -58,6 +57,43 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
 			return nil
 		},
 	},
+	{
+		Name: "Query on _id",
+		Run: func(ctx context.Context, store storage.DocumentStore) error {
+			collection := "query_on_id"
+
+			doc := storage.Document{
+				"attr1": "Foo",
+			}
+
+			upsertedDoc, err := store.Upsert(ctx, collection, doc)
+			if err != nil {
+				return errors.WithStack(err)
+			}
+
+			docID, ok := upsertedDoc.ID()
+			if !ok {
+				return errors.Errorf("")
+			}
+
+			filter := filter.New(
+				filter.NewEqOperator(map[string]interface{}{
+					"_id": docID,
+				}),
+			)
+
+			results, err := store.Query(ctx, collection, filter, nil)
+			if err != nil {
+				return errors.WithStack(err)
+			}
+
+			if e, g := 1, len(results); e != g {
+				return errors.Errorf("len(results): expected '%v', got '%v'", e, g)
+			}
+
+			return nil
+		},
+	},
 	{
 		Name: "Query with 'IN' operator",
 		Run: func(ctx context.Context, store storage.DocumentStore) error {
@@ -160,8 +196,6 @@ var documentStoreOpsTestCases = []documentStoreOpsTestCase{
 				return errors.WithStack(err)
 			}
 
-			spew.Dump(upsertedDoc, upsertedDoc2)
-
 			prevID, _ := upsertedDoc.ID()
 			newID, _ := upsertedDoc2.ID()