diff --git a/core/tests/candidate_test.rs b/core/tests/candidate_test.rs
new file mode 100644
index 0000000..6bfeb24
--- /dev/null
+++ b/core/tests/candidate_test.rs
@@ -0,0 +1,48 @@
+use entity::candidate;
+use portfolio_core::{services::candidate_service::{CandidateService}, Mutation, crypto, token::{self}};
+use sea_orm::{DbConn, Database, sea_query::TableCreateStatement, DbBackend, Schema, ConnectionTrait};
+use serde_json::json;
+
+#[cfg(test)]
+async fn get_memory_sqlite_connection() -> DbConn {
+    let base_url = "sqlite::memory:";
+    let db: DbConn = Database::connect(base_url).await.unwrap();
+
+    let schema = Schema::new(DbBackend::Sqlite);
+    let stmt: TableCreateStatement = schema.create_table_from_entity(candidate::Entity);
+    db.execute(db.get_database_backend().build(&stmt)).await.unwrap();
+    db
+}
+
+#[tokio::test]
+async fn test_create_candidate() {
+    let db = get_memory_sqlite_connection().await;
+
+    let form = serde_json::from_value(json!({
+            "application": 5555555,
+        })).unwrap();
+
+    let candidate = Mutation::create_candidate(&db, form, &"Tajny_kod".to_string()).await.unwrap();
+
+    assert_eq!(candidate.application, 5555555);
+    assert_ne!(candidate.code, "Tajny_kod".to_string());
+    assert!(crypto::verify_password("Tajny_kod", &*candidate.code).ok().unwrap());
+}
+
+
+#[tokio::test]
+async fn test_candidate_jwt() {
+    let db = &get_memory_sqlite_connection().await;
+
+    let form = serde_json::from_value(json!({
+        "application": 5555555,
+    })).unwrap();
+
+    let candidate = Mutation::create_candidate(&db, form, &"Tajny_kod".to_string()).await.unwrap();
+
+    let jwt = CandidateService::login(db, 5555555, "Tajny_kod".to_string()).await.ok().unwrap();
+
+    let claims = token::decode_candidate_token(jwt).ok().unwrap().claims;
+
+    assert_eq!(claims.application_id, candidate.application);
+}
\ No newline at end of file