dds/docs/err/unknown-test-driver.rst

Error: Unknown ``Test-Driver``
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``dds`` has a set of known ``Test-Driver``s built-in, and they may be specified
with the ``Test-Driver`` key. Receiving this error indicates that the specified
``Test-Driver`` was not recognized by ``dds``. Check your spelling, and check
that the driver you want to use is supported by ``dds``. Refer to the
:doc:`/guide/packages` page.