2 files changed, 15 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/Inputs/google-namespaces.h b/clang-tools-extra/test/clang-tidy/Inputs/google-namespaces.h
new file mode 100644
index 00000000000..f4d87f5bc95
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/Inputs/google-namespaces.h
@@ -0,0 +1,7 @@
+namespace {
+int x;
+}
+
+namespace spaaaace {
+class core;
+}
diff --git a/clang-tools-extra/test/clang-tidy/google-namespaces.cpp b/clang-tools-extra/test/clang-tidy/google-namespaces.cpp
new file mode 100644
index 00000000000..12c0b2ddcde
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/google-namespaces.cpp
@@ -0,0 +1,8 @@
+// RUN: clang-tidy %s -checks='-*,google-build-namespaces,google-build-using-namespace' -header-filter='.*' -- | FileCheck %s -implicit-check-not="{{warning|error}}:"
+#include "Inputs/google-namespaces.h"
+// CHECK: warning: do not use unnamed namespaces in header files.
+
+using namespace spaaaace;
+// CHECK: :[[@LINE-1]]:1: warning: do not use namespace using-directives. Use using-declarations instead.
+
+using spaaaace::core; // no-warning