Am 18.10.2019 um 14:59 hat Philippe Mathieu-Daudé geschrieben: > Hi Kevin, > > On 10/18/19 1:51 PM, Kevin Wolf wrote: > > Some tests in 118 use chmod to remove write permissions from the file > > and assume that the image can indeed not be opened read-write > > afterwards. This doesn't work when the test is run as root, because root > > can still open the file as writable even when the permission bit isn't > > set. > > > > Introduce a @skip_if_root decorator and use it in 118 to skip the tests > > in question when the script is run as root. > > > > Signed-off-by: Kevin Wolf <kw...@redhat.com> > > --- > > tests/qemu-iotests/118 | 3 +++ > > tests/qemu-iotests/iotests.py | 10 ++++++++++ > > 2 files changed, 13 insertions(+) > > > > diff --git a/tests/qemu-iotests/118 b/tests/qemu-iotests/118 > > index ea0b326ae0..9eff46d189 100755 > > --- a/tests/qemu-iotests/118 > > +++ b/tests/qemu-iotests/118 > > @@ -446,6 +446,7 @@ class TestChangeReadOnly(ChangeBaseClass): > > self.assert_qmp(result, 'return[0]/inserted/ro', True) > > self.assert_qmp(result, 'return[0]/inserted/image/filename', > > new_img) > > + @iotests.skip_if_root > > Why not have case_notrun() return 'reason' and use: > > @unittest.skipIf(os.getuid() == 0, case_notrun("cannot be run as root"))
Because we can't skip test cases using unittest functionality, it results in different output (the test is marked as 's' instead of '.' and a message '(skipped=n)' is added), which means failure for qemu-iotests. Apart from that, it would duplicate the logic and the error message in every place, which wouldn't be very nice anyway. With the necessary iotests.case_notrun() the line becomes > 80 characters, too. > > def test_rw_ro_retain(self): > > os.chmod(new_img, 0o444) > > self.vm.add_drive(old_img, 'media=disk', 'none') > > @@ -530,6 +531,7 @@ class TestChangeReadOnly(ChangeBaseClass): > > self.assert_qmp(result, 'return[0]/inserted/ro', True) > > self.assert_qmp(result, 'return[0]/inserted/image/filename', > > new_img) > > + @iotests.skip_if_root > > def test_make_ro_rw(self): > > os.chmod(new_img, 0o444) > > self.vm.add_drive(old_img, 'media=disk', 'none') > > @@ -571,6 +573,7 @@ class TestChangeReadOnly(ChangeBaseClass): > > self.assert_qmp(result, 'return[0]/inserted/ro', True) > > self.assert_qmp(result, 'return[0]/inserted/image/filename', > > new_img) > > + @iotests.skip_if_root > > def test_make_ro_rw_by_retain(self): > > os.chmod(new_img, 0o444) > > self.vm.add_drive(old_img, 'media=disk', 'none') > > diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py > > index 3a8f378f90..9c66db613e 100644 > > --- a/tests/qemu-iotests/iotests.py > > +++ b/tests/qemu-iotests/iotests.py > > @@ -920,6 +920,16 @@ def skip_if_unsupported(required_formats=[], > > read_only=False): > > return func_wrapper > > return skip_test_decorator > > +def skip_if_root(func): > > skip_if_user_is_root() is slightly less confuse. Ok, I can make this change. Kevin