refs #5774 feat: solo se pueden añadir cantidades negativas si es un ticket de abono

db/dump/fixtures.sql

@@ -2833,7 +2833,8 @@ INSERT INTO `vn`.`workerConfig` (`id`, `businessUpdated`, `roleFk`, `payMethodFk
 
 INSERT INTO `vn`.`ticketRefund`(`refundTicketFk`, `originalTicketFk`)
     VALUES
-        (1, 12);
+        (1, 12),
+        (8, 10);
 
 INSERT INTO `vn`.`deviceProductionModels` (`code`)
     VALUES

loopback/locale/es.json

@@ -293,5 +293,6 @@
 	"comercialName": "Comercial",
 	"Invalid NIF for VIES": "Invalid NIF for VIES",
 	"Ticket does not exist": "Este ticket no existe",
-    "Ticket is already signed": "Este ticket ya ha sido firmado"
+	"Ticket is already signed": "Este ticket ya ha sido firmado",
+	"You can only add negative amounts in refund tickets": "Solo se puede añadir cantidades negativas en tickets abono"
 }

modules/ticket/back/methods/sale/specs/updateQuantity.spec.js

@@ -110,4 +110,53 @@ describe('sale updateQuantity()', () => {
             throw e;
         }
     });
+
+    it('should throw an error if the quantity is negative and it is not a refund ticket', async() => {
+        const ctx = {
+            req: {
+                accessToken: {userId: 1},
+                headers: {origin: 'localhost:5000'},
+                __: () => {}
+            }
+        };
+        const saleId = 17;
+        const newQuantity = -10;
+
+        const tx = await models.Sale.beginTransaction({});
+
+        let error;
+        try {
+            const options = {transaction: tx};
+
+            await models.Sale.updateQuantity(ctx, saleId, newQuantity, options);
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            error = e;
+        }
+
+        expect(error).toEqual(new Error('You can only add negative amounts in refund tickets'));
+    });
+
+    it('should update a negative quantity when is a ticket refund', async() => {
+        const tx = await models.Sale.beginTransaction({});
+        const saleId = 13;
+        const newQuantity = -10;
+
+        try {
+            const options = {transaction: tx};
+
+            await models.Sale.updateQuantity(ctx, saleId, newQuantity, options);
+
+            const modifiedLine = await models.Sale.findOne({where: {id: saleId}, fields: ['quantity']}, options);
+
+            expect(modifiedLine.quantity).toEqual(newQuantity);
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            throw e;
+        }
+    });
 });

modules/ticket/back/methods/sale/updateQuantity.js

@@ -68,6 +68,13 @@ module.exports = Self => {
             if (newQuantity > sale.quantity && !isRoleAdvanced)
                 throw new UserError('The new quantity should be smaller than the old one');
 
+            const ticketRefund = await models.TicketRefund.findOne({
+                where: {refundTicketFk: sale.ticketFk},
+                fields: ['id']}
+            , myOptions);
+            if (newQuantity < 0 && !ticketRefund)
+                throw new UserError('You can only add negative amounts in refund tickets');
+
             const oldQuantity = sale.quantity;
             const result = await sale.updateAttributes({quantity: newQuantity}, myOptions);