[bug] Stock adjust (#10914)

* Extra checks on backend

* Bug fix for adjustment forms

- Set default quantity of zero

* Additional unit testing (to ensure no regression)

src/backend/InvenTree/stock/serializers.py

@@ -1678,6 +1678,10 @@ class StockAddSerializer(StockAdjustmentSerializer):
                 stock_item = item['pk']
                 quantity = item['quantity']
 
+                if quantity is None or quantity <= 0:
+                    # Ignore in this case - no stock to add
+                    continue
+
                 # Optional fields
                 extra = {}
 
@@ -1703,6 +1707,10 @@ class StockRemoveSerializer(StockAdjustmentSerializer):
                 stock_item = item['pk']
                 quantity = item['quantity']
 
+                # Ignore in this case - no stock to remove
+                if quantity is None or quantity <= 0:
+                    continue
+
                 # Optional fields
                 extra = {}
 

src/frontend/src/forms/StockForms.tsx

@@ -862,10 +862,17 @@ function stockRemoveFields(items: any[]): ApiFormFieldSet {
 
   const records = Object.fromEntries(items.map((item) => [item.pk, item]));
 
+  const initialValue = mapAdjustmentItems(items).map((elem) => {
+    return {
+      ...elem,
+      quantity: 0
+    };
+  });
+
   const fields: ApiFormFieldSet = {
     items: {
       field_type: 'table',
-      value: mapAdjustmentItems(items),
+      value: initialValue,
       modelRenderer: (row: TableFieldRowProps) => {
         const record = records[row.item.pk];
 
@@ -902,10 +909,17 @@ function stockAddFields(items: any[]): ApiFormFieldSet {
 
   const records = Object.fromEntries(items.map((item) => [item.pk, item]));
 
+  const initialValue = mapAdjustmentItems(items).map((elem) => {
+    return {
+      ...elem,
+      quantity: 0
+    };
+  });
+
   const fields: ApiFormFieldSet = {
     items: {
       field_type: 'table',
-      value: mapAdjustmentItems(items),
+      value: initialValue,
       modelRenderer: (row: TableFieldRowProps) => {
         const record = records[row.item.pk];
 
@@ -941,10 +955,12 @@ function stockCountFields(items: any[]): ApiFormFieldSet {
 
   const records = Object.fromEntries(items.map((item) => [item.pk, item]));
 
+  const initialValue = mapAdjustmentItems(items);
+
   const fields: ApiFormFieldSet = {
     items: {
       field_type: 'table',
-      value: mapAdjustmentItems(items),
+      value: initialValue,
       modelRenderer: (row: TableFieldRowProps) => {
         return (
           <StockOperationsRow

src/frontend/tests/pages/pui_stock.spec.ts

@@ -332,6 +332,11 @@ test('Stock - Stock Actions', async ({ browser }) => {
   await page.getByRole('button', { name: 'Scan', exact: true }).click();
   await page.getByText('Scanned stock item into location').waitFor();
 
+  // Add "zero" stock - ensure the quantity stays the same
+  await launchStockAction('add');
+  await page.getByRole('button', { name: 'Submit' }).click();
+  await page.getByText('Quantity: 123').first().waitFor();
+
   // Add stock, and change status
   await launchStockAction('add');
   await page.getByLabel('number-field-quantity').fill('12');
@@ -342,6 +347,11 @@ test('Stock - Stock Actions', async ({ browser }) => {
   await page.getByText('Unavailable').first().waitFor();
   await page.getByText('135').first().waitFor();
 
+  // Remove "zero" stock - ensure the quantity stays the same
+  await launchStockAction('remove');
+  await page.getByRole('button', { name: 'Submit' }).click();
+  await page.getByText('Quantity: 135').first().waitFor();
+
   // Remove stock, and change status
   await launchStockAction('remove');
   await page.getByLabel('number-field-quantity').fill('99');