This uses the new `--statedir` options so as to create the state directory
used by tests as `_ca...

This finally supports a read-only source code directory; test may be run with
`pytest -v <SOURCE...

For when 2 clients ask the subscriber for the same resource.

Quite descriptive and unlikely to clash with an already existing directory.
Still placing it und...

Passing it as an environment variable will allow to set it at runtime (e.g. to
use the current d...

Copy example root into variable test data directory

For example when editing a file with vim watchfiles will generate both a
delete and create event...

The variable test data directory remains at the same place for the moment, as
we do not want to ...

In preparation for supporting modification of test data,

In preparation for supporting modification of test data, it does not make
sense to keep the data...

By leveraging direct support of `NDArray.__getitem__` for tuples of slices.

This should make the initial environment more predictable.

Compress in subscriber

Some fixes in show command and metadata in cache files

PytestConfigWarning: No files were found in testpaths

Enhance tests for data examples and process control

So that waiting for everyone to reach the state makes it more likely that they
all have complete...

For readability.

Before starting the tests. There is still a global timeout, but it should not
be reached in the...

To ensure that it does not keep running in case of error.

This already takes care of waiting and even raising an exception if the
command fails.

This will enable selectively starting or stopping services in tests using
`supervisorctl`.

Not really redundant, but for consistency with the other path-setting options.

Options are considered redundant if they are specified both in the
configuration file and test s...

Disabled by default.

So that it is easier to check for errors.

So that all test state is confined there.

This means that the `var` directory gets created as `tests/var`, instead of
under the current di...

By symlinking it to `tests/data`. Adjust `.gitignore` entry as it may not
always be a directory.

Avoid features that require Python >= 3.11

Use plain sh instead of Bash

The features are:

- Get item with unpack sequence syntax for the slice (`array[*slice]`), maybe...

The commands used to start the different processes in the Supervisor
configuration in tests work...

SVG obtained by exporting as "Scalable Vector Graphics (*.svg)" from Dia.

And improved error display for users of the command line.