Update tests for Delete Properties from a JavaScript Object

[dakshshah96]

Pre-Submission Checklist

• Your pull request targets the staging branch of FreeCodeCamp.
• Branch starts with either fix/, feature/, or translate/ (e.g. fix/signin-issue)
• You have only one commit (if not, squash them into one commit).
• All new and existing tests pass the command npm run test-challenges. Use git commit --amend to amend any fixes.

Type of Change

• Small bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would change existing functionality)
• Add new translation (feature adding new translations)

Checklist:

• Tested changes locally.
• Closes currently open issue (replace XXXX with an issue no): Closes Update tests for Delete Properties from a JavaScript Object #9434

Description

The current tests are checking if a property of myDogs is undefined, while not checking if the object has been mutated. The regex check is not a good metric to catch this.

We can fix this by adding an additional condition to the tests.

[ghost]

LGTM 👍

Thanks for contributing 🎉