[PATCH 7/8] oeqa/runtime/rpm: fail tests if test rpm file cannot be found

[Alexander Kanavin <alex.kanavin@gmail.com>]

Discovery of the test file was happening in a class initializer.
That block of code cannot fail (it's not a test), and so it
falls through to completion even if the needed file could not be found.

Then the tests themselves fail later due to class variables not
being set, but all information as to why is already lost at that point.

This converts the discovery to a helper function called from
the tests, so that the function can fail the tests precisely when the
problems occur.

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
 meta/lib/oeqa/runtime/cases/rpm.py | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/meta/lib/oeqa/runtime/cases/rpm.py b/meta/lib/oeqa/runtime/cases/rpm.py
index a4ba4e67698..ea5619ffea4 100644
--- a/meta/lib/oeqa/runtime/cases/rpm.py
+++ b/meta/lib/oeqa/runtime/cases/rpm.py
@@ -80,21 +80,24 @@ class RpmBasicTest(OERuntimeTestCase):
 
 class RpmInstallRemoveTest(OERuntimeTestCase):
 
-    @classmethod
-    def setUpClass(cls):
-        pkgarch = cls.td['TUNE_PKGARCH'].replace('-', '_')
-        rpmdir = os.path.join(cls.tc.td['DEPLOY_DIR'], 'rpm', pkgarch)
+    def _find_test_file(self):
+        pkgarch = self.td['TUNE_PKGARCH'].replace('-', '_')
+        rpmdir = os.path.join(self.tc.td['DEPLOY_DIR'], 'rpm', pkgarch)
         # Pick base-passwd-doc as a test file to get installed, because it's small
         # and it will always be built for standard targets
         rpm_doc = 'base-passwd-doc-*.%s.rpm' % pkgarch
         if not os.path.exists(rpmdir):
-            return
+            self.fail("Rpm directory {} does not exist".format(rpmdir))
         for f in fnmatch.filter(os.listdir(rpmdir), rpm_doc):
-            cls.test_file = os.path.join(rpmdir, f)
-        cls.dst = '/tmp/base-passwd-doc.rpm'
+            self.test_file = os.path.join(rpmdir, f)
+            break
+        else:
+            self.fail("Couldn't find the test rpm file {} in {}".format(rpm_doc, rpmdir))
+        self.dst = '/tmp/base-passwd-doc.rpm'
 
     @OETestDepends(['rpm.RpmBasicTest.test_rpm_query'])
     def test_rpm_install(self):
+        self._find_test_file()
         self.tc.target.copyTo(self.test_file, self.dst)
         status, output = self.target.run('rpm -ivh /tmp/base-passwd-doc.rpm')
         msg = 'Failed to install base-passwd-doc package: %s' % output
@@ -117,6 +120,7 @@ class RpmInstallRemoveTest(OERuntimeTestCase):
         Author:      Alexander Kanavin <alex.kanavin@gmail.com>
         AutomatedBy: Daniel Istrate <daniel.alexandrux.istrate@intel.com>
         """
+        self._find_test_file()
         db_files_cmd = 'ls /var/lib/rpm/rpmdb.sqlite*'
         check_log_cmd = "grep RPM /var/log/messages | wc -l"
 
-- 
2.39.2