diff --git a/modules/invoiceOut/back/methods/invoiceOut/specs/downloadZip.spec.js b/modules/invoiceOut/back/methods/invoiceOut/specs/downloadZip.spec.js
index 41ea45487..115353679 100644
--- a/modules/invoiceOut/back/methods/invoiceOut/specs/downloadZip.spec.js
+++ b/modules/invoiceOut/back/methods/invoiceOut/specs/downloadZip.spec.js
@@ -15,6 +15,15 @@ describe('InvoiceOut downloadZip()', () => {
     it('should return part of link to dowloand the zip', async() => {
         const tx = await models.InvoiceOut.beginTransaction({});
 
+        const promise = new Promise(resolve => resolve('streamObject'));
+        promise.path = 'storage/pdfs/invoice/2001/1/1/2001T4444444.pdf';
+
+        spyOn(models.InvoiceOut, 'download').and.returnValue([
+            promise,
+            'application/pdf',
+            'filename="2001T1111111.pdf"'
+        ]);
+
         try {
             const options = {transaction: tx};
 
@@ -32,6 +41,15 @@ describe('InvoiceOut downloadZip()', () => {
     it('should return an error if the size of the files is too large', async() => {
         const tx = await models.InvoiceOut.beginTransaction({});
 
+        const promise = new Promise(resolve => resolve('streamObject'));
+        promise.path = 'storage/pdfs/invoice/2001/1/1/2001T4444444.pdf';
+
+        spyOn(models.InvoiceOut, 'download').and.returnValue([
+            promise,
+            'application/pdf',
+            'filename="2001T1111111.pdf"'
+        ]);
+
         let error;
         try {
             const options = {transaction: tx};