[PATCH v3 12/12] tests: Test detach-device and detach-device-alias for test driver

[Luke Yue]

On Fri, 2021-11-26 at 16:44 +0100, Martin Kletzander wrote:
> On Wed, Nov 10, 2021 at 10:24:31PM +0800, Luke Yue wrote:
> > Signed-off-by: Luke Yue <lukedyue at gmail.com>
> > ---
> > tests/virshtest.c | 96
> > +++++++++++++++++++++++++++++++++++++++++++++++
> > 1 file changed, 96 insertions(+)
> > 
> 
> This makes the tests very fragile.  It would be even easier to do the
> test using the internal APIs, similarly to how we do it with the
> qemuhotplugtest.
> 

Thanks for the explanation, I will look into how qemuhotplugtest is
implemented.

> > diff --git a/tests/virshtest.c b/tests/virshtest.c
> > index af2a70f5fb..8e5b397420 100644
> > --- a/tests/virshtest.c
> > +++ b/tests/virshtest.c
> > @@ -160,6 +160,8 @@ static char *custom_uri;
> >     "--connect", \
> >     custom_uri
> > 
> > +# define TEST_XML_PATH abs_top_builddir "/../examples/xml/test"
> > +
> > static int testCompareListDefault(const void *data G_GNUC_UNUSED)
> > {
> >     const char *const argv[] = { VIRSH_DEFAULT, "list", NULL };
> > @@ -437,6 +439,88 @@ static int testIOThreadPin(const void *data
> > G_GNUC_UNUSED)
> >     return testCompareOutputLit(exp, "", NULL, argv);
> > }
> > 
> > +static int testCompareDetachDevice(const void *data G_GNUC_UNUSED)
> > +{
> > +    const char *const argv[] = { VIRSH_CUSTOM, "detach-device fc5\
> > +                                 " TEST_XML_PATH "/testdevif.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevdiskcdrom.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevsound.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevhostdev.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevlease.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevcontroller.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH "/testdevfs.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevrng.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevmem.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevshmem.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevwatchdog.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevinput.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevvsock.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevtpm.xml",
> > +                                 NULL };
> > +    const char *exp =
> > +"Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n\
> > +Device detached successfully\n\n";
> 
> If any of these fails it will be a pain to figure out which one it
> was
> if the error message does not include the name.  Splitting these is
> definitely the way to go.
> 
> > +    return testCompareOutputLit(exp, "", NULL, argv);
> > +}
> > +
> > +static int testCompareDetachDeviceError(const void *data
> > G_GNUC_UNUSED)
> > +{
> > +    const char *const argv[] = { VIRSH_CUSTOM, "detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevtpm.xml;\
> > +                                 detach-device fc5\
> > +                                 " TEST_XML_PATH
> > "/testdevtpm.xml;\
> > +                                 detach-device fc5 --live\
> > +                                 " TEST_XML_PATH
> > "/testdevmemballoon.xml",
> > +                                 NULL };
> > +    const char *exp =
> > +"Device detached successfully\n\n\n\n";
> > +    const char *error_msg =
> > +"error: Failed to detach device from " TEST_XML_PATH
> > "/testdevtpm.xml\n\
> > +error: device not found: matching tpm device not found\n\
> > +error: Failed to detach device from " TEST_XML_PATH
> > "/testdevmemballoon.xml\n\
> > +error: Operation not supported: detach of device 'memballoon' on
> > running domain is not supported\n";
> 
> It'd be also nicer to read and write these tests if they did not rely
> on
> the output just like this and instead used the internal APIs.

Should I create a new file for these tests? As this file is for `virsh`
test but no for test using internal APIs?

Thanks,
Luke