Hack: add one empty test case to the empty results.

Jenkins will not consider the empty results.xml if it is
completely devoid of test results, so an empty test case is added.

Change-Id: I58cddf30ae5207be24fb751c9b373ae5846d4ffb

diff --git a/job_test_build.py b/job_test_build.py
index 5feed99..6f7e026 100755 (executable)
--- a/job_test_build.py
+++ b/job_test_build.py
@@ -83,9 +83,15 @@ def create_empty_results():
     try:
         os.makedirs(results_folder)
         with open(os.path.join(results_folder, "results.xml"), "w") as res:
+            # Note: XXX
+            # Jenkins will not accept a results.xml as valid JUnit file
+            # unless it contains at least one testcase, even if empty.
+            # Without it, the build will be marked as FAILED, which is
+            # incorrect in some cases, ex: unsupported image.
             res.write('<?xml version="1.0" encoding="utf-8"?>\n'
                       '<testsuite errors="0" failures="0" '
                       'name="none" skips="0" tests="0" time="0">\n'
+                      '<testcase />\n'
                       '</testsuite>\n')
     except OSError:
         logging.critical("Cannot create empty directory: " + results_folder)