update test.cpp and tuple.h

Author: jeongsoolee09

cpp/autosar/test/rules/A0-1-2/test.cpp

@@ -17,4 +17,5 @@ void test_return_val() {
   A a2;
   a1 + a2; // COMPLIANT - `+` is a call to operator+, but is permitted by the
            // rule
-}
+  int y = (int)3;
+}

cpp/common/test/includes/standard-library/tuple.h

@@ -1,4 +1,11 @@
 namespace std {
 template <class... Types> class tuple {};
 template <class... Types> std::tuple<Types...> make_tuple(Types &&...args);
-} // namespace std
+// TODO change this to example from cpp standard 
+struct ignore_t {
+    template <typename T>
+    constexpr // required since C++14
+    void operator=(T&&) const noexcept {}
+};
+inline constexpr std::ignore_t ignore; // 'const' only until C++17
+} // namespace std