Default patterns and fixup dicts in Lava-Test Test Definition 1.0 - lava-devel - op-lists.linaro.org

19 Dec 2018


      https://git.lavasoftware.org/lava/lava/issues/179
If your Lava-Test Test Definition 1.0 YAML files explicitly use a
parse: block (like:
https://git.linaro.org/qa/test-definitions.git/tree/automated/linux/ltp/ltp....)
then this will remain supported in Definition 1.0.
If you use the monitors or interactive test actions, this does not
affect you at all.
If you rely on LAVA to create a TestCase based on a command in the
Lava-Test Test Definition just echoing "pass" or "fail", then this is
the Default Pattern and this change will directly affect those test
jobs.
The current Default Pattern and Fixup are lifted directly from V1
(https://git.lavasoftware.org/lava/lava/blob/master/lava_common/constants.py#...):
# V1 compatibility
DEFAULT_V1_PATTERN =
"(?P<test_case_id>.*-*)\s+:\s+(?P<result>(PASS|pass|FAIL|fail|SKIP|skip|UNKNOWN|unknown))"
DEFAULT_V1_FIXUP = {
    "PASS": "pass",
    "FAIL": "fail",
    "SKIP": "skip",
    "UNKNOWN": "unknown",
}
We've recently updated the documentation to drop mention of the
default pattern support for the following reasons:
* It has always been problematic to encode a Python regular expression
in YAML. Failures are difficult to debug and patterns are global for
the entire test operation.
* The move towards more portable test definitions puts the emphasis on
parsing the test output locally on the DUT using a customised parser.
This has further advantages:
* The pattern does not have to be mangled into YAML
  * The pattern can be implemented by a language other than Python
  * The pattern can change during the operation of the test shell,
e.g. a different pattern may be required for setup than for the test
itself.
We are now starting to plan for Lava-Test Test Definition 2.0 with an
emphasis on requiring portable test scripts and removing more of the
lava_test_shell Test Helper scripts. Full information on 2.0 will be
available early in 2019.
As a first step, the generally unhelpful Default Pattern and Default
Fixup dict are likely to be removed. If you need this support, the
pattern can be added to your Lava-Test Test Definition 1.0 YAML files.
In the next release, it is proposed that unless an explicit pattern is
specified in the Lava-Test Test Definition 1.0 YAML file, then no
pattern will be implemented. Processes which echo "pass" or "fail"
would be ignored and no TestCase would be created.
Let us know if there are any thoughts or problems on this proposal.
--
Neil Williams
=============
neil.williams@linaro.org
http://www.linux.codehelp.co.uk/