Add source location test case

cplusplus/stl/05_va_args.cpp

@@ -0,0 +1,24 @@
+#include "utils/test.hpp"
+
+#include <cstdarg>
+
+//===========================================================
+void out_args(const char *msg, ...) {
+  va_list args;
+  printf("%s\n", msg);
+
+  va_start(args, msg);
+  char *curr = NULL;
+  while (NULL != (curr = va_arg(args, char *))) {
+    printf("%s\n", curr);
+  }
+  va_end(args);
+}
+
+void test_va_args() { out_args("hello", "world", "!"); }
+
+//===========================================================
+void test() { TEST(test_va_args); }
+
+//===========================================================
+int main() { test(); }

cplusplus/stl/06_source_loaction.cpp

@@ -0,0 +1,29 @@
+#include "utils/test.hpp"
+// #include <source_location>
+#include <experimental/source_location>
+
+//=====================================================
+void test_source_location_1(const std::experimental::source_location src_loc =
+                                std::experimental::source_location::current()) {
+  out("filename: ", src_loc.file_name());
+  out("function name: ", src_loc.function_name());
+  out("line: ", src_loc.line());
+  out("column: ", src_loc.column());
+}
+
+void test_source_location_2() {
+  auto src_loc = std::experimental::source_location::current();
+  out("filename: ", src_loc.file_name());
+  out("function name: ", src_loc.function_name());
+  out("line: ", src_loc.line());
+  out("column: ", src_loc.column());
+}
+
+//=====================================================
+void test() {
+  TEST(test_source_location_1);
+  TEST(test_source_location_2);
+}
+
+//=====================================================
+int main() { test(); }

cplusplus/stl/07_compare.cpp

@@ -0,0 +1,18 @@
+#include "utils/test.hpp"
+
+#include <experimental/compare>
+
+/= == == == == == == == == == == == == == == == == == == == == == == == == == ==
+   void test_compare(){
+
+   }
+
+/= == == == == == == == == == == == == == == == == == == == == == == == == == ==
+   void test(){
+       // todo
+   }
+
+/= == == == == == == == == == == == == == == == == == == == == == == == == == ==
+   int main() {
+  test();
+}