fix: 🐛 error on select after update

Track updated rows and return with response

Fixes #16

Author: jwelmac

lib/src/mock_supabase_http_client.dart

@@ -373,18 +373,22 @@ class MockSupabaseHttpClient extends BaseClient {
     final queryParams = request.url.queryParameters;
     var updated = false;
 
+    // Track updated rows
+    final updatedRows = [];
+
     // Update items that match the filters
     if (_database.containsKey(tableKey)) {
       for (var row in _database[tableKey]!) {
         if (_matchesFilters(row: row, filters: queryParams)) {
           row.addAll(data);
           updated = true;
+          updatedRows.add(row);
         }
       }
     }
 
     if (updated) {
-      return _createResponse(data, request: request);
+      return _createResponse(updatedRows, request: request);
     } else {
       return _createResponse({'error': 'Not found'},
           statusCode: 404, request: request);

test/mock_supabase_http_client_test.dart

@@ -63,6 +63,20 @@ void main() {
       expect(posts.first, {'id': 1, 'title': 'Updated title'});
     });
 
+    test('Update then select', () async {
+      // Test updating a record
+      await mockSupabase
+          .from('posts')
+          .insert({'id': 1, 'title': 'Original title'});
+      final posts = await mockSupabase
+          .from('posts')
+          .update({'title': 'Updated title'})
+          .eq('id', 1)
+          .select();
+      expect(posts.length, 1);
+      expect(posts.first, {'id': 1, 'title': 'Updated title'});
+    });
+
     test('Delete', () async {
       // Test deleting a record
       await mockSupabase