runtime/cases/ptest.py: fail when ptests fail on target

That's the whole point isn't it? Previously this testcase succeeded
even if some of the underlying on-target tests failed; the only way
to find out if anything was wrong was to manually inspect the logs.

(From OE-Core rev: 21b27d1e9d54d4aab412facff22cd5d3d77827a8)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/runtime/cases/ptest.py

@@ -83,3 +83,11 @@ class PtestRunnerTest(OERuntimeTestCase):
             # Remove the old link to create a new one
             os.remove(ptest_log_dir_link)
         os.symlink(os.path.basename(ptest_log_dir), ptest_log_dir_link)
+
+        failed_tests = {}
+        for section in parse_result.result_dict:
+            failed_testcases = [ test for test, result in parse_result.result_dict[section] if result == 'fail' ]
+            if failed_testcases:
+                failed_tests[section] = failed_testcases
+
+        self.assertFalse(failed_tests, msg = "Failed ptests: %s" %(str(failed_tests)))