test: add filterable test for indirect types

test/mapping-model/mappings/src/filterable-tag.ts

@@ -17,6 +17,8 @@ import {ThingType} from './types';
 import {MapAggTestOptions} from '../../MapAggTestOptions';
 import {ElasticsearchDataType} from '../../../../src/mappings/definitions/typemap';
 
+export type FilterableEnumType = 'a' | 'b' | 'c';
+
 /**
  * @indexable
  */
@@ -38,6 +40,11 @@ export interface FilterableTag {
    */
   baz: 'some literal'
 
+  /**
+   * @filterable
+   */
+  buz: FilterableEnumType
+
   type: ThingType.FilterableTag
 }
 
@@ -68,6 +75,14 @@ export const filterableTagTest: MapAggTestOptions = {
             type: ElasticsearchDataType.keyword
           }
         }
+      },
+      buz: {
+        type: ElasticsearchDataType.keyword,
+        fields: {
+          raw: {
+            type: ElasticsearchDataType.keyword
+          }
+        }
       }
     }
   }