[Piglit] [PATCH] CL: don't reporting failed cases as PASS

[Homer Hsing]

If in multiple subtests, first failed, last passed, then subtests
was looked as "passed". Because "interpretResult" function overwrote
previous results. See framework/exectest.py, interpretResult():

	     if piglit.startswith('subtest'):
		 if not 'subtest' in results:
		     results['subtest'] = {}
HERE->           results['subtest'].update(eval(piglit[7:]))

For instance, if test result was
 ["subtest {'clz char1' : 'fail'}", "subset {'clz char1' : 'pass'}"]
then results['subtest'] would be 'pass'.

"doRun" function also overwrote old results. See framework/core.py,

         if 'subtest' in result and len(result['subtest'].keys()) > 1:
             for test in result['subtest'].keys():
HERE->           result['result'] = result['subtest'][test]

Thus if some subtests failed, but others passed, then final result might
be "PASS".

This patch fixes the bug.

Signed-off-by: Homer Hsing <homer.xing at intel.com>
---
 framework/core.py     | 3 ++-
 framework/exectest.py | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/framework/core.py b/framework/core.py
index 108b517..ec62231 100644
--- a/framework/core.py
+++ b/framework/core.py
@@ -471,7 +471,8 @@ class Test:
 
             if 'subtest' in result and len(result['subtest'].keys()) > 1:
                 for test in result['subtest'].keys():
-                    result['result'] = result['subtest'][test]
+                    if 'result' not in result or result['result'] == 'pass':
+                        result['result'] = result['subtest'][test] # safe update
                     json_writer.write_dict_item(path + '/' + test, result)
             else:
                 json_writer.write_dict_item(path, result)
diff --git a/framework/exectest.py b/framework/exectest.py
index 6ee550c..37e70bd 100644
--- a/framework/exectest.py
+++ b/framework/exectest.py
@@ -218,6 +218,11 @@ class PlainExecTest(ExecTest):
         self.command[0] = testBinDir + self.command[0]
 
     def interpretResult(self, out, returncode, results):
+        def safe_update(dest, src):
+            for k in src:
+                if k not in dest or dest[k] == 'pass':
+                    dest[k] = src[k]
+
         outlines = out.split('\n')
         outpiglit = map(lambda s: s[7:],
                         filter(lambda s: s.startswith('PIGLIT:'), outlines))
@@ -228,7 +233,7 @@ class PlainExecTest(ExecTest):
                     if piglit.startswith('subtest'):
                         if not 'subtest' in results:
                             results['subtest'] = {}
-                        results['subtest'].update(eval(piglit[7:]))
+                        safe_update(results['subtest'], eval(piglit[7:]))
                     else:
                         results.update(eval(piglit))
                 out = '\n'.join(filter(lambda s: not s.startswith('PIGLIT:'),
-- 
1.8.1.2