chore: add select option bloc test

frontend/app_flowy/test/bloc_test/grid_test/grid_bloc_test.dart

@@ -27,7 +27,7 @@ void main() {
     setUpAll(() async {
       gridBloc = GridBloc(view: gridTest.gridView)
         ..add(const GridEvent.initial());
-      await gridBlocResponseFuture();
+      await gridResponseFuture();
     });
 
     // The initial number of rows is three
@@ -37,7 +37,7 @@ void main() {
 
     test('delete row', () async {
       gridBloc.add(GridEvent.deleteRow(gridBloc.state.rowInfos.last));
-      await gridBlocResponseFuture();
+      await gridResponseFuture();
       assert(gridBloc.state.rowInfos.length == 2);
     });
   });

frontend/app_flowy/test/bloc_test/grid_test/select_option_bloc_test.dart

@@ -0,0 +1,36 @@
+import 'package:app_flowy/plugins/grid/application/cell/cell_service/cell_service.dart';
+import 'package:app_flowy/plugins/grid/application/cell/select_option_editor_bloc.dart';
+import 'package:flowy_sdk/protobuf/flowy-grid/field_entities.pb.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:bloc_test/bloc_test.dart';
+import 'util.dart';
+
+void main() {
+  late AppFlowyGridSelectOptionCellTest cellTest;
+  setUpAll(() async {
+    cellTest = await AppFlowyGridSelectOptionCellTest.ensureInitialized();
+  });
+
+  group('SingleSelectOptionBloc', () {
+    late GridSelectOptionCellController cellController;
+    setUp(() async {
+      cellController =
+          await cellTest.makeCellController(FieldType.SingleSelect);
+    });
+
+    blocTest<SelectOptionCellEditorBloc, SelectOptionEditorState>(
+      "create option",
+      build: () {
+        final bloc = SelectOptionCellEditorBloc(cellController: cellController);
+        bloc.add(const SelectOptionEditorEvent.initial());
+        return bloc;
+      },
+      act: (bloc) => bloc.add(const SelectOptionEditorEvent.newOption("A")),
+      wait: gridResponseDuration(),
+      verify: (bloc) {
+        assert(bloc.state.options.length == 1);
+        assert(bloc.state.options[0].name == "A");
+      },
+    );
+  });
+}

frontend/app_flowy/test/bloc_test/grid_test/util.dart

@@ -1,6 +1,12 @@
+import 'package:app_flowy/plugins/grid/application/cell/cell_service/cell_service.dart';
+import 'package:app_flowy/plugins/grid/application/grid_data_controller.dart';
+import 'package:app_flowy/plugins/grid/application/row/row_bloc.dart';
+import 'package:app_flowy/plugins/grid/application/row/row_cache.dart';
+import 'package:app_flowy/plugins/grid/application/row/row_data_controller.dart';
 import 'package:app_flowy/plugins/grid/grid.dart';
 import 'package:app_flowy/workspace/application/app/app_service.dart';
 import 'package:flowy_sdk/protobuf/flowy-folder/view.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-grid/field_entities.pb.dart';
 
 import '../../util.dart';
 
@@ -35,10 +41,84 @@ class AppFlowyGridTest {
   }
 }
 
-Future<void> gridBlocResponseFuture({int millseconds = 100}) {
-  return Future.delayed(gridBlocResponseDuration(millseconds: millseconds));
+class AppFlowyGridSelectOptionCellTest {
+  final AppFlowyGridCellTest _cellTest;
+
+  AppFlowyGridSelectOptionCellTest(AppFlowyGridCellTest cellTest)
+      : _cellTest = cellTest;
+
+  static Future<AppFlowyGridSelectOptionCellTest> ensureInitialized() async {
+    final cellTest = await AppFlowyGridCellTest.ensureInitialized();
+    final test = AppFlowyGridSelectOptionCellTest(cellTest);
+    return test;
+  }
+
+  /// For the moment, just edit the first row of the grid.
+  Future<GridSelectOptionCellController> makeCellController(
+      FieldType fieldType) async {
+    assert(fieldType == FieldType.SingleSelect ||
+        fieldType == FieldType.MultiSelect);
+
+    final fieldContexts =
+        _cellTest._dataController.fieldController.fieldContexts;
+    final field =
+        fieldContexts.firstWhere((element) => element.fieldType == fieldType);
+    final builder = await _cellTest.cellControllerBuilder(0, field.id);
+    final cellController = builder.build() as GridSelectOptionCellController;
+    return cellController;
+  }
+}
+
+class AppFlowyGridCellTest {
+  // ignore: unused_field
+  final AppFlowyGridTest _gridTest;
+  final GridDataController _dataController;
+  AppFlowyGridCellTest(AppFlowyGridTest gridTest)
+      : _gridTest = gridTest,
+        _dataController = GridDataController(view: gridTest.gridView);
+
+  static Future<AppFlowyGridCellTest> ensureInitialized() async {
+    final gridTest = await AppFlowyGridTest.ensureInitialized();
+    final test = AppFlowyGridCellTest(gridTest);
+    await test._loadGridData();
+    return test;
+  }
+
+  Future<void> _loadGridData() async {
+    final result = await _dataController.loadData();
+    result.fold((l) => null, (r) => throw Exception(r));
+  }
+
+  Future<GridCellControllerBuilder> cellControllerBuilder(
+      int rowIndex, String fieldId) async {
+    final RowInfo rowInfo = _dataController.rowInfos[rowIndex];
+    final blockCache = _dataController.blocks[rowInfo.rowPB.blockId];
+    final rowCache = blockCache?.rowCache;
+
+    final rowDataController = GridRowDataController(
+      rowInfo: rowInfo,
+      fieldController: _dataController.fieldController,
+      rowCache: rowCache!,
+    );
+
+    final rowBloc = RowBloc(
+      rowInfo: rowInfo,
+      dataController: rowDataController,
+    )..add(const RowEvent.initial());
+    await gridResponseFuture(millseconds: 300);
+
+    return GridCellControllerBuilder(
+      cellId: rowBloc.state.gridCellMap[fieldId]!,
+      cellCache: rowCache.cellCache,
+      delegate: rowDataController,
+    );
+  }
+}
+
+Future<void> gridResponseFuture({int millseconds = 100}) {
+  return Future.delayed(gridResponseDuration(millseconds: millseconds));
 }
 
-Duration gridBlocResponseDuration({int millseconds = 100}) {
+Duration gridResponseDuration({int millseconds = 100}) {
   return Duration(milliseconds: millseconds);
 }