sdk upgrade

Author: CorvusYe

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "deps/dart_gdbc"]
+	path = deps/dart_gdbc
+	url = https://github.com/graph-cn/dart_gdbc.git

example/test/example_test.dart

@@ -1,4 +1,8 @@
-import 'package:example/example.dart';
+import 'package:example/example.dart' as example;
 import 'package:test/test.dart';
 
-void main() {}
+void main() {
+  test('run main', () async {
+    example.main([]);
+  });
+}

pubspec.yaml

@@ -4,13 +4,11 @@ version: 0.0.1+1
 repository: https://github.com/graph-cn/nebula_dart_gdbc
 
 environment:
-  sdk: '>=2.19.0 <3.0.0'
+  sdk: '>=2.19.0 <4.0.0'
 
 dependencies:
   fbthrift: ^1.0.0+1
   dart_gdbc: ^0.0.1+3
-  # dart_gdbc: 
-  #   path: ../dart_gdbc
 
 dev_dependencies:
   lints: ^2.0.0