test/py: highlight warnings in the log summary

Currently, if a test emits a warning message but otherwise passes, there's
no indication of this in the log summary, which can lead to warnings being
missed. Enhance the test logic to explicitly mention warnings in otherwise
passing tests, and not to collapse the log sections for tests with
warnings, so that they're more easily seen when scanning the log.

Signed-off-by: Stephen Warren <swarren@nvidia.com>

test/py/conftest.py

@@ -344,6 +344,7 @@ tests_failed = []
 tests_xpassed = []
 tests_xfailed = []
 tests_skipped = []
+tests_warning = []
 tests_passed = []
 
 def pytest_itemcollected(item):
@@ -380,6 +381,11 @@ def cleanup():
     if log:
         with log.section('Status Report', 'status_report'):
             log.status_pass('%d passed' % len(tests_passed))
+            if tests_warning:
+                log.status_warning('%d passed with warning' % len(tests_warning))
+                for test in tests_warning:
+                    anchor = anchors.get(test, None)
+                    log.status_warning('... ' + test, anchor)
             if tests_skipped:
                 log.status_skipped('%d skipped' % len(tests_skipped))
                 for test in tests_skipped:
@@ -520,7 +526,9 @@ def pytest_runtest_protocol(item, nextitem):
         A list of pytest reports (test result data).
     """
 
+    log.get_and_reset_warning()
     reports = runtestprotocol(item, nextitem=nextitem)
+    was_warning = log.get_and_reset_warning()
 
     # In pytest 3, runtestprotocol() may not call pytest_runtest_setup() if
     # the test is skipped. That call is required to create the test's section
@@ -531,9 +539,14 @@ def pytest_runtest_protocol(item, nextitem):
         start_test_section(item)
 
     failure_cleanup = False
-    test_list = tests_passed
-    msg = 'OK'
-    msg_log = log.status_pass
+    if not was_warning:
+        test_list = tests_passed
+        msg = 'OK'
+        msg_log = log.status_pass
+    else:
+        test_list = tests_warning
+        msg = 'OK (with warning)'
+        msg_log = log.status_warning
     for report in reports:
         if report.outcome == 'failed':
             if hasattr(report, 'wasxfail'):