added missing test file for build to run

frontend/pshared/test/ledger/account_mapper_test.dart

@@ -0,0 +1,63 @@
+import 'package:test/test.dart';
+
+import 'package:pshared/data/dto/describable.dart';
+import 'package:pshared/data/dto/ledger/account.dart';
+import 'package:pshared/data/dto/ledger/role.dart';
+import 'package:pshared/data/dto/ledger/status.dart';
+import 'package:pshared/data/dto/ledger/type.dart';
+import 'package:pshared/data/mapper/ledger/account.dart';
+
+LedgerAccountDTO _baseDto({
+  DescribableDTO? describable,
+  Map<String, String>? metadata,
+}) {
+  return LedgerAccountDTO(
+    ledgerAccountRef: 'ledger:r1',
+    organizationRef: 'org:1',
+    accountCode: 'asset:rub:abc',
+    accountType: LedgerAccountTypeDTO.asset,
+    currency: 'RUB',
+    status: LedgerAccountStatusDTO.active,
+    allowNegative: false,
+    role: LedgerAccountRoleDTO.operating,
+    metadata: metadata,
+    describable: describable,
+  );
+}
+
+void main() {
+  group('LedgerAccountDTOMapper', () {
+    test('keeps describable name when it is present', () {
+      final dto = _baseDto(
+        describable: const DescribableDTO(name: 'Main RUB', description: 'ops'),
+        metadata: const {'name': 'Metadata Name'},
+      );
+
+      final domain = dto.toDomain();
+
+      expect(domain.name, equals('Main RUB'));
+      expect(domain.description, equals('ops'));
+    });
+
+    test('uses metadata name when describable is absent', () {
+      final dto = _baseDto(metadata: const {'name': 'Metadata Name'});
+
+      final domain = dto.toDomain();
+
+      expect(domain.name, equals('Metadata Name'));
+      expect(domain.description, isNull);
+    });
+
+    test('uses metadata name when describable name is blank', () {
+      final dto = _baseDto(
+        describable: const DescribableDTO(name: '   ', description: 'ops'),
+        metadata: const {'name': 'Metadata Name'},
+      );
+
+      final domain = dto.toDomain();
+
+      expect(domain.name, equals('Metadata Name'));
+      expect(domain.description, equals('ops'));
+    });
+  });
+}