From b8da24cd224f9c4d793bb4bb9809b6b517f0ee38 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gustav@sornas.net>
Date: Tue, 10 Nov 2020 13:36:39 +0100
Subject: test: rule of three

---
 labb4/test-rule-of-three/main.cpp | 74 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 labb4/test-rule-of-three/main.cpp

(limited to 'labb4/test-rule-of-three/main.cpp')

diff --git a/labb4/test-rule-of-three/main.cpp b/labb4/test-rule-of-three/main.cpp
new file mode 100644
index 0000000..ccef31a
--- /dev/null
+++ b/labb4/test-rule-of-three/main.cpp
@@ -0,0 +1,74 @@
+#include <iostream>
+#include "main.hpp"
+
+Base *DerivedA::clone() {
+    std::cout << "clone da" << std::endl;
+    return new DerivedA;
+}
+
+Base *DerivedB::clone() {
+    std::cout << "clone db" << std::endl;
+    return new DerivedB;
+}
+
+void Base::hello() {
+    std::cout << 0 << std::endl;
+}
+
+void DerivedA::hello() {
+    std::cout << 1 << std::endl;
+}
+
+void DerivedB::hello() {
+    std::cout << 2 << std::endl;
+}
+
+GameState::GameState() {
+    std::cout << "c" << std::endl;
+    thing = new DerivedA;
+}
+
+GameState::GameState(const GameState &other) {
+    std::cout << "cc" << std::endl;
+    thing = other.thing->clone();
+}
+
+GameState &GameState::operator=(const GameState &other) {
+    std::cout << "=" << std::endl;
+    thing = other.thing;
+    return *this;
+}
+
+GameState::~GameState() {
+    std::cout << "d gamestate" << std::endl;
+    delete thing;
+    thing = nullptr;
+}
+
+void GameState::switchThing() {
+    std::cout << "switch" << std::endl;
+    delete thing;
+    thing = new DerivedB;
+}
+
+int main(int argc, char *argv[]) {
+    GameState state;
+    state.thing->hello();
+    std::cout << std::endl;
+
+    GameState copy = state;
+    state.thing->hello();
+    copy.thing->hello();
+    std::cout << std::endl;
+
+    copy.switchThing();
+    state.thing->hello();
+    copy.thing->hello();
+    std::cout << std::endl;
+
+    state = copy;
+    state.thing->hello();
+    copy.thing->hello();
+
+    return 0;
+}
-- 
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