added order update test

backend/src/tests/db.rs

@@ -2,7 +2,7 @@
 mod tests {
     use std::fs::{self};
 
-    use diesel::{dsl::count, query_dsl::methods::SelectDsl, QueryDsl, RunQueryDsl};
+    use diesel::{dsl::count, query_dsl::methods::SelectDsl, ExpressionMethods, QueryDsl, RunQueryDsl, SelectableHelper};
 
     use crate::{
         model::{
@@ -63,6 +63,35 @@ mod tests {
         assert!(insert.is_ok());
         assert_eq!(crate::schema::carts::table.count().first::<i64>(&mut conn), Ok(cart.len() as i64));
     }
+
+    #[test]
+    fn test_update_order() {
+        let JsonOrder { name, street, zipcode, .. } = serde_json::from_str(include_str!("./mock_order.json")).expect("Cannot open mock order");
+
+        let db = test_db::TestDb::new();
+        let mut conn = db.connection();
+
+        use crate::schema::orders;
+
+        let inserted_id = diesel::insert_into(orders::table)
+            .values(&NewOrder {
+                name: &name,
+                street: &street,
+                zipcode: &zipcode,
+                fulfilled: false,
+            })
+            .returning(orders::dsl::id)
+            .get_result::<i32>(&mut conn);
+
+        assert!(inserted_id.is_ok());
+        assert_eq!(inserted_id, Ok(1));
+        assert_eq!(crate::schema::orders::table.count().first(&mut conn), Ok(1));
+
+        let res = diesel::update(crate::schema::orders::table.filter(crate::schema::orders::id.eq(inserted_id.unwrap()))).set(crate::schema::orders::fulfilled.eq(true)).execute(&mut conn); 
+        assert!(res.is_ok());
+
+        assert_eq!(crate::schema::orders::table.filter(crate::schema::orders::fulfilled.eq(true)).count().first(&mut conn), Ok(1));  
+    }
 
     #[test]
     fn insert_stock() {