diff --git a/tests/auth/register.rs b/tests/auth/register.rs
index bc4b05d..f93cb46 100644
--- a/tests/auth/register.rs
+++ b/tests/auth/register.rs
@@ -106,3 +106,124 @@ fn register_full_address() {
     // check that this address is the one we just added
     assert_eq!(tab_address[0].street, "rue grandganage");
 }
+
+#[test]
+fn register_address_wrong_type() {
+    let client = init::clean_client();
+    let conn = init::database_connection();
+
+    // check that there is no user in database already done in init::clean()
+
+    // prepare a user
+    let test_user = "{
+        \"email\":\"guillaume.latour@student.unamur.be\",
+        \"password\":\"mysuperpassword\",
+        \"firstname\": \"Guillaume\",
+        \"lastname\":\"Latour\",
+        \"phone\":\"+32 471 85 85 85\",
+        \"address\":{
+            \"street\":\"rue grandganage\",
+            \"number\":21,
+            \"city\":\"Namur\",
+            \"zipcode\":\"cinq mille\",
+            \"country\":\"Belgique\"
+        }
+     }";
+
+    // request the application on the route /api/register
+    let req = client
+        .post("/api/auth/register/")
+        .header(ContentType::JSON)
+        .body(test_user);
+    let response = req.dispatch();
+
+    // check that the response is OK
+    assert_eq!(response.status(), Status::UnprocessableEntity);
+
+    // check that there is no new user or address in database
+    assert_eq!(users.load::<User>(&conn).unwrap().len(), 0);
+    assert_eq!(addresses.load::<Address>(&conn).unwrap().len(), 0);
+}
+
+#[test]
+fn register_incomplete_address() {
+    let client = init::clean_client();
+    let conn = init::database_connection();
+
+    // check that there is no user in database already done in init::clean()
+
+    // prepare a user
+    let test_user = "{
+        \"email\":\"guillaume.latour@student.unamur.be\",
+        \"password\":\"mysuperpassword\",
+        \"firstname\": \"Guillaume\",
+        \"lastname\":\"Latour\",
+        \"phone\":\"+32 471 85 85 85\",
+        \"address\":{
+            \"street\":\"rue grandganage\",
+            \"number\":21,
+            \"country\":\"Belgique\"
+        }
+     }";
+
+    // request the application on the route /api/register
+    let req = client
+        .post("/api/auth/register/")
+        .header(ContentType::JSON)
+        .body(test_user);
+    let response = req.dispatch();
+
+    // check that the response is OK
+    assert_eq!(response.status(), Status::UnprocessableEntity);
+
+    // check that there is no new user or address in database
+    assert_eq!(users.load::<User>(&conn).unwrap().len(), 0);
+    assert_eq!(addresses.load::<Address>(&conn).unwrap().len(), 0);
+}
+
+#[test]
+fn register_with_existing_user() {
+    let client = init::clean_client();
+    let conn = init::database_connection();
+
+    // check that there is no user in database already done in init::clean()
+
+    // prepare a user
+    let test_user = "{
+        \"email\":\"guillaume.latour@student.unamur.be\",
+        \"password\":\"mysuperpassword\",
+        \"firstname\": \"Guillaume\",
+        \"lastname\":\"Latour\"
+     }";
+
+    // request the application on the route /api/register
+    let req = client
+        .post("/api/auth/register/")
+        .header(ContentType::JSON)
+        .body(test_user);
+    let response = req.dispatch();
+
+    // check that the response is OK
+    assert_eq!(response.status(), Status::Ok);
+
+    // load users present in database
+    let tab = users.load::<User>(&conn).unwrap();
+
+    // check that there is only one user in database
+    assert_eq!(tab.len(), 1);
+
+    // check that this user is the one we just added
+    assert_eq!(tab[0].email, "guillaume.latour@student.unamur.be");
+    // and there is nothing in the address table
+    assert_eq!(addresses.load::<Address>(&conn).unwrap().len(), 0);
+
+    let req2 = client
+        .post("/api/auth/register/")
+        .header(ContentType::JSON)
+        .body(test_user);
+    let response2 = req2.dispatch();
+    assert_eq!(response2.status(), Status::Conflict);
+
+    // check that there is still one user in database
+    assert_eq!(tab.len(), 1);
+}