clang-tools-extra/test/clang-tidy/performance-unnecessary-value-param-header.cpp: Resolve flakiness in the test.

Tests would go flaky if;
1. Using %T (not %t)
2. Put a file with common name like header.h into %T
3. Other tests (eg. misc-unused-parameters.cpp) are doing as well

We should avoid using %T unless it really makes sense.

llvm-svn: 307876

1 files changed, 5 insertions, 3 deletions

diff --git a/clang-tools-extra/test/clang-tidy/performance-unnecessary-value-param-header.cpp b/clang-tools-extra/test/clang-tidy/performance-unnecessary-value-param-header.cpp
index 661abde46e0..9e4c24650f6 100644
--- a/clang-tools-extra/test/clang-tidy/performance-unnecessary-value-param-header.cpp
+++ b/clang-tools-extra/test/clang-tidy/performance-unnecessary-value-param-header.cpp
@@ -1,6 +1,8 @@
-// RUN: cp %S/Inputs/performance-unnecessary-value-param/header.h %T/header.h
-// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t -- -- -std=c++11 -I %T
-// RUN: diff %T/header.h %S/Inputs/performance-unnecessary-value-param/header-fixed.h
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: cp %S/Inputs/performance-unnecessary-value-param/header.h %t/header.h
+// RUN: %check_clang_tidy %s performance-unnecessary-value-param %t/temp -- -- -std=c++11 -I %t
+// RUN: diff %t/header.h %S/Inputs/performance-unnecessary-value-param/header-fixed.h
 
 #include "header.h"