test: add new tests

[toomuchdesign]

What kind of change does this PR introduce?

Tests

What is the current behaviour?

You can also link to an open issue here.

What is the new behaviour?

...

Does this PR introduce a breaking change?

What changes might users need to make in their application due to this PR?

Other information:

Please check if the PR fulfills these requirements:

• Tests for the changes have been added
• Docs have been added / updated
• Relevant Changeset has been added

[changeset-bot]

⚠️ No Changeset found

Latest commit: 54517a5

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[coveralls]

coverage: 100.0%. remained the same
when pulling 54517a5 on add-tests
into 1d3f16d on master.