Merge pull request #19 from kenluobo/add_unique_ptr_test_case

Add unique ptr test case

cplusplus/stl/12_concept.cpp

@@ -32,6 +32,7 @@ void test_derived_from() {
   std::cout << std::boolalpha;
   out(std::derived_from<decltype(d), decltype(b)> == true);
 
+
   print_base_and_derived_class(b,d);
   print_base_and_derived_class(d,b);
 }

cplusplus/stl/13_unique_ptr.cpp

@@ -0,0 +1,53 @@
+#include "stl.h"
+#include "test.hpp"
+
+//====================================================
+class Base {
+public:
+  Base() { OUT_FUNC_INFO(); }
+  Base(const Base &b) { OUT_FUNC_INFO(); }
+  Base(const Base &&b) { OUT_FUNC_INFO(); }
+  Base operator=(const Base *b) {
+    OUT_FUNC_INFO();
+    return *b;
+  }
+  virtual ~Base() { OUT_FUNC_INFO(); }
+
+public:
+  virtual void out_msg() { out("call ", 1); }
+};
+
+class Derived : public Base {
+public:
+  Derived() { OUT_FUNC_INFO(); }
+  virtual ~Derived() { OUT_FUNC_INFO(); }
+
+public:
+  virtual void out_msg() override { out("call ", 2); }
+};
+
+//====================================================
+void test_unique_ptr_1() {
+  std::unique_ptr<Base> p_b1(new Base());
+  std::unique_ptr<Base> p_b2 = std::make_unique<Base>();
+  std::unique_ptr<Base> p_b3 = std::move(p_b2);
+  std::unique_ptr<Base> p_b4 = std::make_unique<Base>(*p_b3);
+}
+
+void test_unique_ptr_2() {
+  std::unique_ptr<Base> p_b1 = std::make_unique<Derived>();
+  p_b1->out_msg();                            // Derived::otu_msg
+  p_b1.get()->out_msg();                      // Derived::out_msg
+  static_cast<Base *>(p_b1.get())->out_msg(); // Derived::out_msg
+
+  p_b1->Base::out_msg(); // Base::out_msg
+}
+
+//====================================================
+void test() {
+  TEST(test_unique_ptr_1);
+  TEST(test_unique_ptr_2);
+}
+
+//====================================================
+int main() { test(); }

cplusplus/stl/utils/stl.h

@@ -11,6 +11,7 @@
 #include <algorithm>
 #include <concepts>
 #include <initializer_list>
+#include <memory>
 #include <string>
 #include <type_traits>
 #include <typeinfo>

cplusplus/stl/utils/test.hpp

@@ -13,3 +13,9 @@
 template <typename... Args> void out(Args... args) {
   (std::cout << ... << args) << "\n";
 }
+
+#define OUT_FUNC_INFO(...)                                                     \
+  do {                                                                         \
+    out("Current Func: ", __PRETTY_FUNCTION__, " ",                            \
+        CONNECT_STRING(__VA_ARGS__));                                          \
+  } while (0);