consolidate more tests

any_tests/jsoniter_any_map_test.go

@@ -13,3 +13,16 @@ func Test_wrap_map(t *testing.T) {
 	any = jsoniter.Wrap(map[string]string{"Field1": "hello"})
 	should.Equal(1, any.Size())
 }
+
+func Test_map_wrapper_any_get_all(t *testing.T) {
+	should := require.New(t)
+	any := jsoniter.Wrap(map[string][]int{"Field1": {1, 2}})
+	should.Equal(`{"Field1":1}`, any.Get('*', 0).ToString())
+	should.Contains(any.Keys(), "Field1")
+
+	// map write to
+	stream := jsoniter.NewStream(jsoniter.ConfigDefault, nil, 0)
+	any.WriteTo(stream)
+	// TODO cannot pass
+	//should.Equal(string(stream.buf), "")
+}