Added default value to db

lib/db_helper.dart

@@ -17,7 +17,7 @@ class DBHelper {
 
   Future<Database> _createDatabase() async {
     Database database =
-        await openDatabase(join(await getDatabasesPath(), 'mydb.db'),
+        await openDatabase(join(await getDatabasesPath(), 'lists.db'),
             onCreate: (Database db, int version) {
       db.execute("""
           CREATE TABLE List(
@@ -34,6 +34,20 @@ class DBHelper {
             list_id INTEGER
           )
           """);
+      db.execute("""
+          INSERT INTO List(id, list_name, is_template)
+          VALUES
+            (0, 'test list', 0),
+            (1, 'test template', 1)
+      """);
+      db.execute("""
+          INSERT INTO CHECK(check_text, value, list_id)
+          VALUES
+            ('test check', 1, 0),
+            ('test uncheck', 0, 0),
+            ('test check', 1, 1),
+            ('test uncheck', 0, 1)
+      """);
     }, version: 1);
     return database;
   }