Re: [libvirt] [PATCH 2/2] tests: silence qemuargv2xmltest noise

On 09/10/2010 10:42 AM, Daniel P. Berrange wrote: >On Fri, Sep 10, 2010 at 10:29:37AM -0600, Eric Blake wrote: >>* tests/qemuargv2xmltest.c (testCompareXMLToArgvHelper, mymain): >>Use flag to mark which tests expect noisy stderr. >>(testCompareXMLToArgvFiles): Add parameter to test whether stderr >>was appropriately silent. >>--- >> >>This doesn't actually validate the contents of the warning put to >>stderr, but it's better than nothing as it tightens the test and >>reduces the noise. > >What warnings are you seeing on stderr ?? The test suite really >shouldn't print anything on stderr unless there's a real failure >occurring, so I'm not sure that we need to/should hide stderr These are the warnings related to using the qemu monitoring commands added in 0.8.3: TEST: qemuargv2xmltest ........................................ 40 ................20:41:28.046: warning : qemuParseCommandLine:6565 : unknown QEMU argument '-unknown', adding to the qemu namespace 20:41:28.046: warning : qemuParseCommandLine:6565 : unknown QEMU argument 'parameter', adding to the qemu namespace . 57 OK PASS: qemuargv2xmltest It's not a real failure (which is why the test was completing successfully), so much as an intentional warning to the user that use of the qemu namespace has the potential for undefined effects. After this patch series, the test now explicitly checks for the presence or absence of the warning, such that the test output becomes: