Referencing to Object Key Name with Hyphen

We have a simple Postman test task here that ensures the product is available by keeping the current-stock value above 0. Although, the emphasis will be rather on the JavaScript syntax rule of using key names with hyphens.

Our response example looks like this:

{
     "id": 5,
     "name": "coconut",
     "type": "fruit",
     "price": 9.10
     "current-stock": 20
}

The initial test script:

let response = pm.response.json()
pm.test("Stock should't be 0, it must be above 0", () => {
    pm.expect(response.current-stock).to.be.above(0)
});

When we try to implement a key name that contains a hyphen, like this  .current-stock, we will receive a Postman error saying that “stock is not defined.” This is because key names that contain a hyphen can’t be used in a function like single-word key names.

Here is the correct way of using it:

let response = pm.response.json()
pm.test("Stock should be above 0", () => {
    pm.expect(response['current-stock']).to.be.above(0)
});