Move CapturedStderr to test_util library

Bug: 32181382
Test: run /data/nativetest(64)/binderTextOutputTest
Change-Id: Ifb2e1f6af2c3f57b5cbed7dde65efb31253c52a2

1 files changed, 17 insertions, 0 deletions

diff --git a/base/include/android-base/test_utils.h b/base/include/android-base/test_utils.h
index 4ea3c8e48..c0bf0c1e1 100644
--- a/base/include/android-base/test_utils.h
+++ b/base/include/android-base/test_utils.h
@@ -48,4 +48,21 @@ class TemporaryDir {
   DISALLOW_COPY_AND_ASSIGN(TemporaryDir);
 };
 
+class CapturedStderr {
+ public:
+  CapturedStderr();
+  ~CapturedStderr();
+
+  int fd() const;
+
+ private:
+  void init();
+  void reset();
+
+  TemporaryFile temp_file_;
+  int old_stderr_;
+
+  DISALLOW_COPY_AND_ASSIGN(CapturedStderr);
+};
+
 #endif  // ANDROID_BASE_TEST_UTILS_H