fix: in filter parser should support string array (#1502)

* fix: in filter parser should support string array

* refactor: fix tests

Author: anandtiwary

projects/components/src/filtering/filter/parser/filter-parser-lookup.service.test.ts

@@ -180,6 +180,18 @@ describe('Filter Parser Lookup service', () => {
       value: 'myString'
     });
 
+    expect(
+      spectator.service.lookup(FilterOperator.In).parseSplitFilter({
+        attribute: getTestFilterAttribute(FilterAttributeType.StringArray),
+        operator: FilterOperator.In,
+        rhs: 'myStr, myString'
+      })
+    ).toEqual({
+      field: 'stringArrayAttribute',
+      operator: FilterOperator.In,
+      value: ['myStr', 'myString']
+    });
+
     expect(
       spectator.service.lookup(FilterOperator.In).parseSplitFilter({
         attribute: getTestFilterAttribute(FilterAttributeType.String),

projects/components/src/filtering/filter/parser/types/in-filter-parser.ts

@@ -22,7 +22,8 @@ export class InFilterParser extends AbstractFilterParser<PossibleValuesTypes> {
       case FilterAttributeType.Number:
         return this.parseNumberArrayValue(splitFilter.rhs);
       case FilterAttributeType.Boolean: // Unsupported
-      case FilterAttributeType.StringArray: // Unsupported
+      case FilterAttributeType.StringArray:
+        return this.parseStringArrayValue(splitFilter.rhs);
       case FilterAttributeType.Timestamp: // Unsupported
         return undefined;
       default: