[PATCH v2 4/4] minor: kunit: tool: fix unit test so it can run from non-root dir

From: Daniel Latypov
Date: Wed Dec 02 2020 - 14:10:53 EST


Also take this time to rename get_absolute_path() to test_data_path().

1. the name is currently a lie. It gives relative paths, e.g. if I run
from the same dir as the test file, it gives './test_data/<file>'

See https://docs.python.org/3/reference/import.html#__file__, which
doesn't stipulate that implementations provide absolute paths.

2. it's only used for generating paths to tools/testing/kunit/test_data/
So we can tersen things by making it less general.

Cache the absolute path to the test data files per suggestion from [1].
Using relative paths, the tests break because of this code in kunit.py
if get_kernel_root_path():
        os.chdir(get_kernel_root_path())

[1] https://lore.kernel.org/linux-kselftest/CABVgOSnH0gz7z5JhRCGyG1wg0zDDBTLoSUCoB-gWMeXLgVTo2w@xxxxxxxxxxxxxx/

Fixes: 5578d008d9e0 ("kunit: tool: fix running kunit_tool from outside kernel tree")
Signed-off-by: Daniel Latypov <dlatypov@xxxxxxxxxx>
---
tools/testing/kunit/kunit_tool_test.py | 60 +++++++++++---------------
1 file changed, 24 insertions(+), 36 deletions(-)

diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py
index cf160914bc55..1cd127b225a9 100755
--- a/tools/testing/kunit/kunit_tool_test.py
+++ b/tools/testing/kunit/kunit_tool_test.py
@@ -21,16 +21,18 @@ import kunit_json
import kunit

test_tmpdir = ''
+abs_test_data_dir = ''

def setUpModule():
- global test_tmpdir
+ global test_tmpdir, abs_test_data_dir
test_tmpdir = tempfile.mkdtemp()
+ abs_test_data_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), 'test_data'))

def tearDownModule():
shutil.rmtree(test_tmpdir)

-def get_absolute_path(path):
- return os.path.join(os.path.dirname(__file__), path)
+def test_data_path(path):
+ return os.path.join(abs_test_data_dir, path)

class KconfigTest(unittest.TestCase):

@@ -46,8 +48,7 @@ class KconfigTest(unittest.TestCase):

def test_read_from_file(self):
kconfig = kunit_config.Kconfig()
- kconfig_path = get_absolute_path(
- 'test_data/test_read_from_file.kconfig')
+ kconfig_path = test_data_path('test_read_from_file.kconfig')

kconfig.read_from_file(kconfig_path)

@@ -98,8 +99,7 @@ class KUnitParserTest(unittest.TestCase):
str(needle) + '" not found in "' + str(haystack) + '"!')

def test_output_isolated_correctly(self):
- log_path = get_absolute_path(
- 'test_data/test_output_isolated_correctly.log')
+ log_path = test_data_path('test_output_isolated_correctly.log')
with open(log_path) as file:
result = kunit_parser.isolate_kunit_output(file.readlines())
self.assertContains('TAP version 14', result)
@@ -110,8 +110,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertContains('ok 1 - example', result)

def test_output_with_prefix_isolated_correctly(self):
- log_path = get_absolute_path(
- 'test_data/test_pound_sign.log')
+ log_path = test_data_path('test_pound_sign.log')
with open(log_path) as file:
result = kunit_parser.isolate_kunit_output(file.readlines())
self.assertContains('TAP version 14', result)
@@ -140,8 +139,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertContains('ok 3 - string-stream-test', result)

def test_parse_successful_test_log(self):
- all_passed_log = get_absolute_path(
- 'test_data/test_is_test_passed-all_passed.log')
+ all_passed_log = test_data_path('test_is_test_passed-all_passed.log')
with open(all_passed_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -149,8 +147,7 @@ class KUnitParserTest(unittest.TestCase):
result.status)

def test_parse_failed_test_log(self):
- failed_log = get_absolute_path(
- 'test_data/test_is_test_passed-failure.log')
+ failed_log = test_data_path('test_is_test_passed-failure.log')
with open(failed_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -158,8 +155,7 @@ class KUnitParserTest(unittest.TestCase):
result.status)

def test_no_tests(self):
- empty_log = get_absolute_path(
- 'test_data/test_is_test_passed-no_tests_run.log')
+ empty_log = test_data_path('test_is_test_passed-no_tests_run.log')
with open(empty_log) as file:
result = kunit_parser.parse_run_tests(
kunit_parser.isolate_kunit_output(file.readlines()))
@@ -169,8 +165,7 @@ class KUnitParserTest(unittest.TestCase):
result.status)

def test_no_kunit_output(self):
- crash_log = get_absolute_path(
- 'test_data/test_insufficient_memory.log')
+ crash_log = test_data_path('test_insufficient_memory.log')
print_mock = mock.patch('builtins.print').start()
with open(crash_log) as file:
result = kunit_parser.parse_run_tests(
@@ -180,8 +175,7 @@ class KUnitParserTest(unittest.TestCase):
file.close()

def test_crashed_test(self):
- crashed_log = get_absolute_path(
- 'test_data/test_is_test_passed-crash.log')
+ crashed_log = test_data_path('test_is_test_passed-crash.log')
with open(crashed_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -189,8 +183,7 @@ class KUnitParserTest(unittest.TestCase):
result.status)

def test_ignores_prefix_printk_time(self):
- prefix_log = get_absolute_path(
- 'test_data/test_config_printk_time.log')
+ prefix_log = test_data_path('test_config_printk_time.log')
with open(prefix_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -199,8 +192,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertEqual('kunit-resource-test', result.suites[0].name)

def test_ignores_multiple_prefixes(self):
- prefix_log = get_absolute_path(
- 'test_data/test_multiple_prefixes.log')
+ prefix_log = test_data_path('test_multiple_prefixes.log')
with open(prefix_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -209,8 +201,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertEqual('kunit-resource-test', result.suites[0].name)

def test_prefix_mixed_kernel_output(self):
- mixed_prefix_log = get_absolute_path(
- 'test_data/test_interrupted_tap_output.log')
+ mixed_prefix_log = test_data_path('test_interrupted_tap_output.log')
with open(mixed_prefix_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -219,7 +210,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertEqual('kunit-resource-test', result.suites[0].name)

def test_prefix_poundsign(self):
- pound_log = get_absolute_path('test_data/test_pound_sign.log')
+ pound_log = test_data_path('test_pound_sign.log')
with open(pound_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -228,7 +219,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertEqual('kunit-resource-test', result.suites[0].name)

def test_kernel_panic_end(self):
- panic_log = get_absolute_path('test_data/test_kernel_panic_interrupt.log')
+ panic_log = test_data_path('test_kernel_panic_interrupt.log')
with open(panic_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -237,7 +228,7 @@ class KUnitParserTest(unittest.TestCase):
self.assertEqual('kunit-resource-test', result.suites[0].name)

def test_pound_no_prefix(self):
- pound_log = get_absolute_path('test_data/test_pound_no_prefix.log')
+ pound_log = test_data_path('test_pound_no_prefix.log')
with open(pound_log) as file:
result = kunit_parser.parse_run_tests(file.readlines())
self.assertEqual(
@@ -248,7 +239,7 @@ class KUnitParserTest(unittest.TestCase):
class KUnitJsonTest(unittest.TestCase):

def _json_for(self, log_file):
- with(open(get_absolute_path(log_file))) as file:
+ with open(test_data_path(log_file)) as file:
test_result = kunit_parser.parse_run_tests(file)
json_obj = kunit_json.get_json_result(
test_result=test_result,
@@ -258,22 +249,19 @@ class KUnitJsonTest(unittest.TestCase):
return json.loads(json_obj)

def test_failed_test_json(self):
- result = self._json_for(
- 'test_data/test_is_test_passed-failure.log')
+ result = self._json_for('test_is_test_passed-failure.log')
self.assertEqual(
{'name': 'example_simple_test', 'status': 'FAIL'},
result["sub_groups"][1]["test_cases"][0])

def test_crashed_test_json(self):
- result = self._json_for(
- 'test_data/test_is_test_passed-crash.log')
+ result = self._json_for('test_is_test_passed-crash.log')
self.assertEqual(
{'name': 'example_simple_test', 'status': 'ERROR'},
result["sub_groups"][1]["test_cases"][0])

def test_no_tests_json(self):
- result = self._json_for(
- 'test_data/test_is_test_passed-no_tests_run.log')
+ result = self._json_for('test_is_test_passed-no_tests_run.log')
self.assertEqual(0, len(result['sub_groups']))

class StrContains(str):
@@ -282,7 +270,7 @@ class StrContains(str):

class KUnitMainTest(unittest.TestCase):
def setUp(self):
- path = get_absolute_path('test_data/test_is_test_passed-all_passed.log')
+ path = test_data_path('test_is_test_passed-all_passed.log')
with open(path) as file:
all_passed_log = file.readlines()

--
2.29.2.576.ga3fc446d84-goog