Running two test-files, one with multiple tests using data-providers, one without data-provider causes errors:
$ bash-test test_*
bash-test v0.2.0 by Campanda GmbH and contributors.
test_with_dataproviders.sh
bar
✓ _test_bar foo
foo
✓ _test_foo foo
test_without_dataproviders.sh
baz
✓ test_baz
../bash-test: line 105: : No such file or directory
../bash-test: line 111: unset: `data_provider_for_test_foo'': not a valid identifier
3 tests completed.