add query param selector spec and button disabled tests

[ramenhog]

Issue Number

69

Purpose/Implementation Notes

Add tests for query param selector component:

• Add to/Remove from Query button disabled/enabled cases

Types of changes

What types of changes does your code introduce? Put an x in the boxes that apply

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Functional tests

Tests pass locally

Checklist

Put an x in the boxes that apply.

• [x] Lint and unit tests pass locally with my changes
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added necessary documentation (if appropriate)
• [x] Any dependent changes have been merged and published in downstream modules