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kunit: tool: Do not error on tests without test plans

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The (K)TAP spec encourages test output to begin with a 'test plan': a
count of the number of tests being run of the form:
1..n

However, some test suites might not know the number of subtests in
advance (for example, KUnit's parameterised tests use a generator
function). In this case, it's not possible to print the test plan in
advance.

kunit_tool already parses test output which doesn't contain a plan, but
reports an error. Since we want to use nested subtests with KUnit
paramterised tests, remove this error.

Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
David Gow 2021-11-02 00:30:11 -07:00 committed by Shuah Khan
parent ee92ed3836
commit c68077b146
2 changed files with 6 additions and 4 deletions
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5
tools/testing/kunit/kunit_parser.py
View File

@ -340,8 +340,8 @@ def parse_test_plan(lines: LineStream, test: Test) -> bool:
"""
Parses test plan line and stores the expected number of subtests in
test object. Reports an error if expected count is 0.
Returns False and reports missing test plan error if fails to parse
test plan.
Returns False and sets expected_count to None if there is no valid test
plan.
Accepted format:
- '1..[number of subtests]'
@ -356,7 +356,6 @@ def parse_test_plan(lines: LineStream, test: Test) -> bool:
match = TEST_PLAN.match(lines.peek())
if not match:
test.expected_count = None
test.add_error('missing plan line!')
return False
test.log.append(lines.pop())
expected_count = int(match.group(1))

5
tools/testing/kunit/kunit_tool_test.py
View File

@ -191,7 +191,10 @@ class KUnitParserTest(unittest.TestCase):
result = kunit_parser.parse_run_tests(
kunit_parser.extract_tap_lines(
file.readlines()))
self.assertEqual(2, result.test.counts.errors)
# A missing test plan is not an error.
self.assertEqual(0, result.test.counts.errors)
# All tests should be accounted for.
self.assertEqual(10, result.test.counts.total())
self.assertEqual(
kunit_parser.TestStatus.SUCCESS,
result.status)