Add a package-level config file

[nex3]

As more and more aspects of tests become configurable in various ways, it will become necessary to have project-level configuration files. These might be used for configuration that would otherwise be included declaratively on tests, since if all tests would share the same configuration it would be a drag to mark it over and over again. They might also be used for configuration that would otherwise be passed on the command-line, to make it easy to provide custom defaults on a per-package basis.

Some things the config file should definitely support:

• Default platform(s) to run tests on.
• Default files to consider tests.
• Default test timeout (see Make the test timeout configurable #9).
• Default reporter (see Support pluggable reporters #12).
• Configuration for various plugins.

As time goes on, more configuration will likely be added as well.

[azenla]

I take it this would be in YAML?

[nex3]

Very likely.

[zoechi]

It should be possible

• to specify a specific configuration file using a command line argument.
• configure a logging level (for example to suppress test log output)

[nex3]

to specify a specific configuration file using a command line argument.

Agreed.

configure a logging level (for example to suppress test log output)

This is a separate feature request; it's out-of-scope for this issue.

[zoechi]

Could logging possibility be solved in a custom reporter when they are supported?

[nex3]

Most of the output does come from the reporter. The test runner itself prints some errors for things like invalid command-line arguments, but anything that happens within a test is passed to the runner.