Consider test level expected results for unexpected pass calculation (#40308)

* Consider test level expected results for unexpected pass calculation

Any test level expected result and subtest unexpected pass should be
considered as unexpected pass.

This is not the case previously. If we expect 'Error" at test level,
any unexpectd passed subtest cause the test to fail unexpectedly.

Author: WeizhongX

tools/wptrunner/wptrunner/testrunner.py

@@ -700,16 +700,17 @@ def test_ended(self, test, results):
 
         self.test_count += 1
         is_unexpected = expected != status and status not in known_intermittent
+        is_pass_or_expected = status in ["OK", "PASS"] or (not is_unexpected)
 
         if is_unexpected or subtest_unexpected:
             self.unexpected_tests.add(test.id)
 
         # A result is unexpected pass if the test or any subtest run
-        # unexpectedly, and the overall status is OK (for test harness test), or
-        # PASS (for reftest), and all unexpected results for subtests (if any) are
-        # unexpected pass.
+        # unexpectedly, and the overall status is expected or passing (OK for test
+        # harness test, or PASS for reftest), and all unexpected results for
+        # subtests (if any) are unexpected pass.
         is_unexpected_pass = ((is_unexpected or subtest_unexpected) and
-                              status in ["OK", "PASS"] and subtest_all_pass_or_expected)
+                              is_pass_or_expected and subtest_all_pass_or_expected)
         if is_unexpected_pass:
             self.unexpected_pass_tests.add(test.id)