[lit] follow-up 2380c1b, check stdout and stderr separately

The error output is cached so it could be out of order with stdout in some bots.
llvm · Sep 22, 2022 · 5850b99 · 5850b99
1 parent 2380c1b
commit 5850b99
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/llvm/utils/lit/tests/googletest-detect-duplicate.py b/llvm/utils/lit/tests/googletest-detect-duplicate.py
@@ -2,9 +2,11 @@
 # when it happens.
 
 # RUN: %{lit} -v --order=random %{inputs}/googletest-detect-duplicate \
-# RUN:                          %{inputs}/googletest-detect-duplicate 2>&1 | FileCheck %s
+# RUN:                          %{inputs}/googletest-detect-duplicate 2> %t.warn | FileCheck %s
+# RUN: FileCheck --check-prefix=CHECK-WARN < %t.warn %s
+
+# CHECK-WARN: warning: Skip adding
 
-# CHECK: warning: Skip adding
 # CHECK: -- Testing:
 # CHECK: PASS: googletest-detect-duplicate :: [[PATH:[Dd]ummy[Ss]ub[Dd]ir/]][[FILE:OneTest\.py]]/0
 # CHECK: Passed{{ *}}: 1