Testing Retrieval of All Invoices

Prerequisites

⚠️ Previously we only demonstrated uploading “demo_invoice.png”. Please upload the remaining 2 invoice files as well!

Step 1: Create Postman Collection

1. Open Postman application and click the "+" button to create a new collection.

2. Select Blank Collection.

3. Name it: InvoiceGetAPI-Tests

Step 2: Create Request

1. Within the newly created collection, click the "+" button to add a request.

2. Name the request: Get All Invoices.

3. Select the POST method.

5. Go to API Gateway and select the API: GetInvoiceAPI.

6. Navigate to the Stages section.

7. Click the "+" button to reveal the /invoice endpoint path as shown below:

8. Select the GET method and copy the Invoke URL.

9. Paste the Invoke URL into Postman as follows:

10. Click the Send button to view results.

14. A successful response will appear as follows:

Verify that all 3 invoices are returned to confirm success ✅