logcat: test White Black list

Change-Id: Ia9509ad09dd86e4d9169ed7d0b33911f1ca9eec6
diff --git a/logcat/tests/Android.mk b/logcat/tests/Android.mk
index bdaec14..733af31 100644
--- a/logcat/tests/Android.mk
+++ b/logcat/tests/Android.mk
@@ -28,7 +28,11 @@
     -g \
     -Wall -Wextra \
     -Werror \
-    -fno-builtin \
+    -fno-builtin
+
+ifneq ($(filter userdebug eng,$(TARGET_BUILD_VARIANT)),)
+test_c_flags += -DUSERDEBUG_BUILD=1
+endif
 
 test_src_files := \
     logcat_test.cpp \