python2.7 with pylint 1.9.5
python3.9 with pylint 2.6.0
Also, reduce the script of unused argument silencing.

It is redundant, but regular runner output does not display the test class.

Thanks, modern pylint !

Otherwise, client certificates issued before a new CA is used get rejected
once the new CA becomes current.

This extension is required by rfc5280 (see section 5.2.1) but was
overlooked.

The result only changes when CA certificates are reloaded, so prepare this
valuein _loadCAKeyPairList.

"expires" takes an absolute date, "max-age" takes a number of seconds until
expiration.
So switch to "max-age": according to Mozilla Developer Network, it is
supported by all major browsers, and by IE since version 8.

4 branches depend on how tests are written, and are indeed not currently
used.
1 branch depend on test process environment.

caucase.http will be re-generating its https certificate, so it can be
slower than a normal non-initial start.

It would be the sign of a inconsistency in the dispatcher dict.
Do not transform it into a user error (404).

Not all programs support having multiple CA certificates per file, so add
support for creating and maintaining certificate directories containing
a single certificate each.

Reference machine: Raspberry Pi 1 B+.
caucased can take around 40s to start (CA generation, ...).

wsgi.input is specified to be a bytes object, not a string object.

So caucase.sh gets some regular exercise.

Otherwise, this will trigger if a test takes more than 10s to run, causing
caucased to exit prematurely, as only _stopServer triggers this event.

Also, encode/decode json in utf-8, not ascii, as per standard.

Consistently with how doBackup encodes the result of json.dumps .

Avoid repeating function name in these.

Get an auto-issued user certificate and use it to exercise an authenticated
action.

Should have been part of:
  commit 17325dc0
  Author: Vincent Pelletier <plr.vincent@gmail.com>
  Date:   Sat Jul 14 18:40:41 2018 +0900

      all: Make caucased https certificate independent from CAS.

Also, remove CURL, PUT and PUTNoOut aliases. They are replaced with
private function with a naming consistent with the rest of this script.

Is no value is provided to a return statement, the status of the last
command ran is returned, making "$?" superfluous.

If there is no return statement, shell functions return the status of the
last command they ran. So "return $?" as last function statement is
superfluous.

Simplify code a bit.
Change directory when starting caucased, so all files are stored inside
test's temporary directory (and not just the database).
Tolerate caucased not immediately starting.
Fix CA presence tests (well this is embarrassing).
List test directory content when failing, as it will get deleted shortly
after.

In shell/caucase.sh line 1134:
    trap "kill \"$caucased_pid\"; wait; rm -rf \"$tmp_dir\"" EXIT
                 ^-----------^ SC2064: Use single quotes, otherwise this expands now rather than when signalled.
                                                 ^------^ SC2064: Use single quotes, otherwise this expands now rather than when signalled.

These variables are local, so immediate expantion is expected.