* tests(chore): `tls-dh-params.bats` - Drop `ONE_DIR` ENV variants
There is no longer special handling for this ENV with this feature, these variant test cases serve no value.
* tests(refactor): `tls-dh-params.bats`
Converted to new common setup helper methods and testing structure.
No `setup_file` needed. Only two test cases used now, the Mozilla check is bundled into the default params test case where it's relevant.
Refactored some logic into common functions. Should be easier to grok intention.
* chore: Apply review feedback
Co-authored-by: Casper <casperklein@users.noreply.github.com>
* chore: Inline functions into test cases
As per review feedback
Allows for using `load` with an absolute path instead of a relative one, which makes it possible to group tests into different directories.
Parallel tests differ slightly, loading the newer `helper/common.bash` and `helper/setup.bash` files instead of the older `test_helper/common.bash` which serial tests continue to use.
- `test_helper.bats` needs more work than this PR provides to be compatible with parallel tests, so must remain as a serial test for now.
- `spam_bounced.bats` had failures as a serial test, but works well converted to a parallel test in a future commit.
