Issues with test function for get tracer method

[Swetna]

The valid function does not seem to be working the other two work fine. The data is not retaining in the test_db.

[anth-volk]

A couple notes in general before I jump in:

1. It's usually bad practice to open changes off of your own local master branch. Instead, keep master separate and only use it to regularly run git rebase origin master to pull in our code, and open your own branches off of that
2. We ask contributors to clone, not fork, the API, as a few of the GitHub Actions systems we use require cloning in order to pass around environment variables, keys, etc. In the future, could you use a branch off of our repo?

[anth-volk]

@Swetna Could you remind me how this relates to #2233?

[Swetna]

Ohh ya sure while testing the function I noticed the function does not seem to be checking if the input parameters are of the valid type or within the valid range for eg: The function did not seem to break when I added the household_id as -100 or when the country_code was not a str but a int value instead. It dealt with those cases by checking if they exist in the database or no and if not then returned a not found value