I have successfully converted an excel sheet's content into a JSON, now I am trying to do some validation to it.

I need to assert that the `jsonData` below contains the following keys: `Breakfast`, `Lunch`, `Snack`, `Dinner`. It should also be in this specific order.

To test out an assertion first, I tried this:

```
const jsonData = [{  
  "Breakfast": "Cereal",
  "Lunch": "Chicken",
  "Snack": "Biscuit",
  "Dinner": "Pork",
  "Drinks": "Water"
}]

expect(jsonData).to.be.an('array').that.contains.keys('Breakfast')

```

And I got this error:
[![AssertionError: expected [ Array(1) ] to contain key 'Breakfast'](https://i.stack.imgur.com/3XJuF.png)](https://i.stack.imgur.com/3XJuF.png)