Return subscription from channel-preview [skip-tests]

scnserver/test/util/structure.go

@@ -125,6 +125,18 @@ func assertjsonStructureMatchSingleValue(t *testing.T, strschema string, realVal
 			t.Errorf("Key < %s > is not a int (its actually %T: '%v')", keyPath, realValue, realValue)
 			return
 		}
+	case "object|null":
+		if langext.IsNil(realValue) {
+			return // OK
+		}
+		if _, ok := realValue.(map[string]any); !ok {
+			t.Errorf("Key < %s > is not an object|null (its actually %T: '%v')", keyPath, realValue, realValue)
+			return
+		}
+		if _, err := time.Parse(time.RFC3339, realValue.(string)); err != nil {
+			t.Errorf("Key < %s > is not an object|null (its '%v')", keyPath, realValue)
+			return
+		}
 	default:
 		t.Errorf("Unknown schema type '%s' for key < %s >", strschema, keyPath)
 		return