Add C++98 tests, guard variable template behind C++14

Author: localspook

clang-tools-extra/test/clang-tidy/checkers/readability/redundant-typename-cxx98.cpp

@@ -0,0 +1,19 @@
+// RUN: %check_clang_tidy -std=c++98 %s readability-redundant-typename %t \
+// RUN:   -- -- -fno-delayed-template-parsing
+
+struct NotDependent {
+  typedef int R;
+};
+
+template <typename T>
+typename T::R f() {
+  static_cast<typename T::R>(0);
+
+  typename NotDependent::R NotDependentVar;
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'typename' [readability-redundant-typename]
+  // CHECK-FIXES: NotDependent::R NotDependentVar;
+
+  void notDependentFunctionDeclaration(typename NotDependent::R);
+  // CHECK-MESSAGES: :[[@LINE-1]]:40: warning: redundant 'typename' [readability-redundant-typename]
+  // CHECK-FIXES: void notDependentFunctionDeclaration(NotDependent::R);
+}

clang-tools-extra/test/clang-tidy/checkers/readability/redundant-typename.cpp

@@ -122,8 +122,14 @@ struct PartiallySpecializedType {};
 template <typename T>
 struct PartiallySpecializedType<T, typename T::R> {};
 
+#if __cplusplus >= 201402L
+
 template <typename T>
-auto v = typename T::type();
+typename T::R v = typename T::R();
+// CHECK-MESSAGES-20: :[[@LINE-1]]:1: warning: redundant 'typename' [readability-redundant-typename]
+// CHECK-FIXES-20: T::R v = typename T::R();
+
+#endif // __cplusplus >= 201402L
 
 template <typename T>
 typename T::R f();