fix: 初次提交

flutter_study/test/KotlinTest.kt

@@ -0,0 +1,17 @@
+class KotlinTest{
+    val listOfStr = arrayListOf("1", 2, 3)
+
+    fun main() {
+        println(listOfStr)
+    }
+}
+
+fun getNameLength(name: String?): Int {
+    return name?.length?: -1
+}
+
+val lambda1 = { println("这是个最简单的lambda") }
+
+fun main() {
+    println(getNameLength(null))
+}

flutter_study/test/widget_test.dart

@@ -0,0 +1,50 @@
+// This is a basic Flutter widget test.
+//
+// To perform an interaction with a widget in your test, use the WidgetTester
+// utility in the flutter_test package. For example, you can send tap and scroll
+// gestures. You can also use WidgetTester to find child widgets in the widget
+// tree, read text, and verify that the values of widget properties are correct.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:flutter_study/main.dart';
+
+void main() {
+  // testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+  //   // Build our app and trigger a frame.
+  //   await tester.pumpWidget(const MyApp());
+  //
+  //   // Verify that our counter starts at 0.
+  //   expect(find.text('0'), findsOneWidget);
+  //   expect(find.text('1'), findsNothing);
+  //
+  //   // Tap the '+' icon and trigger a frame.
+  //   await tester.tap(find.byIcon(Icons.add));
+  //   await tester.pump();
+  //
+  //   // Verify that our counter has incremented.
+  //   expect(find.text('0'), findsNothing);
+  //   expect(find.text('1'), findsOneWidget);
+  // });
+
+  Future.delayed(const Duration(seconds: 3), () {
+    return "future delayed 3 sec";
+  })
+      .then((value) => print("success"));
+
+  Future.delayed(Duration(seconds: 2),(){
+    //return "hi world!";
+    throw AssertionError("Error");
+  }).then((data){
+    //执行成功会走到这里
+    print("success");
+  }).catchError((e){
+    //执行失败会走到这里
+    print(e);
+  });
+
+  print("object");
+}
+
+