more unit-test

Author: denzor200

clang-tools-extra/test/clang-tidy/checkers/misc/shadowed-namespace-function-main.cpp

@@ -0,0 +1,6 @@
+// RUN: %check_clang_tidy %s misc-shadowed-namespace-function %t
+
+namespace foo {
+  int main();
+}
+int main() {}