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kunit: tool: parse KTAP compliant test output

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Change the KUnit parser to be able to parse test output that complies with
the KTAP version 1 specification format found here:
https://kernel.org/doc/html/latest/dev-tools/ktap.html. Ensure the parser
is able to parse tests with the original KUnit test output format as
well.

KUnit parser now accepts any of the following test output formats:

Original KUnit test output format:

 TAP version 14
 1..1
   # Subtest: kunit-test-suite
   1..3
   ok 1 - kunit_test_1
   ok 2 - kunit_test_2
   ok 3 - kunit_test_3
 # kunit-test-suite: pass:3 fail:0 skip:0 total:3
 # Totals: pass:3 fail:0 skip:0 total:3
 ok 1 - kunit-test-suite

KTAP version 1 test output format:

 KTAP version 1
 1..1
   KTAP version 1
   1..3
   ok 1 kunit_test_1
   ok 2 kunit_test_2
   ok 3 kunit_test_3
 ok 1 kunit-test-suite

New KUnit test output format (changes made in the next patch of
this series):

 KTAP version 1
 1..1
   KTAP version 1
   # Subtest: kunit-test-suite
   1..3
   ok 1 kunit_test_1
   ok 2 kunit_test_2
   ok 3 kunit_test_3
 # kunit-test-suite: pass:3 fail:0 skip:0 total:3
 # Totals: pass:3 fail:0 skip:0 total:3
 ok 1 kunit-test-suite

Signed-off-by: Rae Moar <rmoar@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Rae Moar
2022-11-23 18:25:57 +00:00
committed by Shuah Khan
parent 909c6475d5
commit 434498a6be
4 changed files with 80 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/testing/kunit/kunit_parser.py
+51 -28
View File
@@ -441,6 +441,7 @@ def parse_diagnostic(lines: LineStream) -> List[str]:
- '# Subtest: [test name]'
- '[ok|not ok] [test number] [-] [test name] [optional skip
directive]'
- 'KTAP version [version number]'
Parameters:
lines - LineStream of KTAP output to parse
@@ -449,8 +450,9 @@ def parse_diagnostic(lines: LineStream) -> List[str]:
Log of diagnostic lines
"""
log = [] # type: List[str]
while lines and not TEST_RESULT.match(lines.peek()) and not \
TEST_HEADER.match(lines.peek()):
non_diagnostic_lines = [TEST_RESULT, TEST_HEADER, KTAP_START]
while lines and not any(re.match(lines.peek())
for re in non_diagnostic_lines):
log.append(lines.pop())
return log
@@ -496,11 +498,15 @@ def print_test_header(test: Test) -> None:
test - Test object representing current test being printed
"""
message = test.name
if message != "":
# Add a leading space before the subtest counts only if a test name
# is provided using a "# Subtest" header line.
message += " "
if test.expected_count:
if test.expected_count == 1:
message += ' (1 subtest)'
message += '(1 subtest)'
else:
message += f' ({test.expected_count} subtests)'
message += f'({test.expected_count} subtests)'
stdout.print_with_timestamp(format_test_divider(message, len(message)))
def print_log(log: Iterable[str]) -> None:
@@ -647,7 +653,7 @@ def bubble_up_test_results(test: Test) -> None:
elif test.counts.get_status() == TestStatus.TEST_CRASHED:
test.status = TestStatus.TEST_CRASHED
def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: bool) -> Test:
"""
Finds next test to parse in LineStream, creates new Test object,
parses any subtests of the test, populates Test object with all
@@ -665,15 +671,32 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
1..4
[subtests]
- Subtest header line
- Subtest header (must include either the KTAP version line or
"# Subtest" header line)
Example:
Example (preferred format with both KTAP version line and
"# Subtest" line):
KTAP version 1
# Subtest: name
1..3
[subtests]
ok 1 name
Example (only "# Subtest" line):
# Subtest: name
1..3
[subtests]
ok 1 name
Example (only KTAP version line, compliant with KTAP v1 spec):
KTAP version 1
1..3
[subtests]
ok 1 name
- Test result line
Example:
@@ -685,28 +708,29 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
expected_num - expected test number for test to be parsed
log - list of strings containing any preceding diagnostic lines
corresponding to the current test
is_subtest - boolean indicating whether test is a subtest
Return:
Test object populated with characteristics and any subtests
"""
test = Test()
test.log.extend(log)
parent_test = False
main = parse_ktap_header(lines, test)
if main:
# If KTAP/TAP header is found, attempt to parse
if not is_subtest:
# If parsing the main/top-level test, parse KTAP version line and
# test plan
test.name = "main"
ktap_line = parse_ktap_header(lines, test)
parse_test_plan(lines, test)
parent_test = True
else:
# If KTAP/TAP header is not found, test must be subtest
# header or test result line so parse attempt to parser
# subtest header
parent_test = parse_test_header(lines, test)
# If not the main test, attempt to parse a test header containing
# the KTAP version line and/or subtest header line
ktap_line = parse_ktap_header(lines, test)
subtest_line = parse_test_header(lines, test)
parent_test = (ktap_line or subtest_line)
if parent_test:
# If subtest header is found, attempt to parse
# test plan and print header
# If KTAP version line and/or subtest header is found, attempt
# to parse test plan and print test header
parse_test_plan(lines, test)
print_test_header(test)
expected_count = test.expected_count
@@ -721,7 +745,7 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
sub_log = parse_diagnostic(lines)
sub_test = Test()
if not lines or (peek_test_name_match(lines, test) and
not main):
is_subtest):
if expected_count and test_num <= expected_count:
# If parser reaches end of test before
# parsing expected number of subtests, print
@@ -735,20 +759,19 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
test.log.extend(sub_log)
break
else:
sub_test = parse_test(lines, test_num, sub_log)
sub_test = parse_test(lines, test_num, sub_log, True)
subtests.append(sub_test)
test_num += 1
test.subtests = subtests
if not main:
if is_subtest:
# If not main test, look for test result line
test.log.extend(parse_diagnostic(lines))
if (parent_test and peek_test_name_match(lines, test)) or \
not parent_test:
parse_test_result(lines, test, expected_num)
else:
if test.name != "" and not peek_test_name_match(lines, test):
test.add_error('missing subtest result line!')
else:
parse_test_result(lines, test, expected_num)
# Check for there being no tests
# Check for there being no subtests within parent test
if parent_test and len(subtests) == 0:
# Don't override a bad status if this test had one reported.
# Assumption: no subtests means CRASHED is from Test.__init__()
@@ -758,11 +781,11 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
# Add statuses to TestCounts attribute in Test object
bubble_up_test_results(test)
if parent_test and not main:
if parent_test and is_subtest:
# If test has subtests and is not the main test object, print
# footer.
print_test_footer(test)
elif not main:
elif is_subtest:
print_test_result(test)
return test
@@ -785,7 +808,7 @@ def parse_run_tests(kernel_output: Iterable[str]) -> Test:
test.add_error('Could not find any KTAP output. Did any KUnit tests run?')
test.status = TestStatus.FAILURE_TO_PARSE_TESTS
else:
test = parse_test(lines, 0, [])
test = parse_test(lines, 0, [], False)
if test.status != TestStatus.NO_TESTS:
test.status = test.counts.get_status()
stdout.print_with_timestamp(DIVIDER)
tools/testing/kunit/kunit_tool_test.py
+14
View File
@@ -312,6 +312,20 @@ class KUnitParserTest(unittest.TestCase):
self.assertEqual(kunit_parser._summarize_failed_tests(result),
'Failures: all_failed_suite, some_failed_suite.test2')
def test_ktap_format(self):
ktap_log = test_data_path('test_parse_ktap_output.log')
with open(ktap_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(result.counts, kunit_parser.TestCounts(passed=3))
self.assertEqual('suite', result.subtests[0].name)
self.assertEqual('case_1', result.subtests[0].subtests[0].name)
self.assertEqual('case_2', result.subtests[0].subtests[1].name)
def test_parse_subtest_header(self):
ktap_log = test_data_path('test_parse_subtest_header.log')
with open(ktap_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.print_mock.assert_any_call(StrContains('suite (1 subtest)'))
def line_stream_from_strs(strs: Iterable[str]) -> kunit_parser.LineStream:
return kunit_parser.LineStream(enumerate(strs, start=1))
tools/testing/kunit/test_data/test_parse_ktap_output.log
+8
View File
@@ -0,0 +1,8 @@
KTAP version 1
1..1
KTAP version 1
1..3
ok 1 case_1
ok 2 case_2
ok 3 case_3
ok 1 suite
tools/testing/kunit/test_data/test_parse_subtest_header.log
+7
View File
@@ -0,0 +1,7 @@
KTAP version 1
1..1
KTAP version 1
# Subtest: suite
1..1
ok 1 test
ok 1 suite