diff --git a/yaserde/tests/serializer.rs b/yaserde/tests/serializer.rs
index 3bddce9..89f9cbf 100644
--- a/yaserde/tests/serializer.rs
+++ b/yaserde/tests/serializer.rs
@@ -99,6 +99,8 @@ fn se_attributes() {
     }
   }
 
+  assert_eq!(SubStruct::default(), SubStruct{subitem: "".to_string()});
+
   let model = XmlStruct {
     item: "something".to_string(),
     sub: SubStruct {
@@ -136,6 +138,8 @@ fn ser_rename() {
     }
   }
 
+  assert_eq!(SubStruct::default(), SubStruct{subitem: "".to_string()});
+
   let model = XmlStruct {
     item: "something".to_string(),
     sub_struct: SubStruct {
@@ -176,6 +180,11 @@ fn ser_text_content_with_attributes() {
     }
   }
 
+  assert_eq!(SubStruct::default(), SubStruct{
+    subitem: "".to_string(),
+    text: "".to_string(),
+  });
+
   let model = XmlStruct {
     item: "something".to_string(),
     sub_struct: SubStruct {
@@ -216,6 +225,8 @@ fn ser_enum() {
     }
   }
 
+  assert_eq!(Color::default(), Color::White);
+
   #[derive(YaSerialize, PartialEq, Debug)]
   pub struct RGBColor {
     red: String,