created build pipeline to allow unit testing

Assignment_2/lib/Node.cpp

@@ -0,0 +1,58 @@
+#pragma once
+
+#include <mutex>
+
+class Node { 
+    protected:
+        int data; 
+        bool is_dummy;
+        std::mutex mut;
+
+    public:
+        Node* next;
+        bool deleted;
+
+        Node(int element);
+        static Node* Dummy();
+        //  Dummy();
+
+        void lock();
+        void unlock();
+        bool is_smaller_than(int n);
+        bool is_smaller_than(Node* n);
+        bool is_equal(int n);
+};
+
+
+Node::Node(int element){
+    data = element;
+    is_dummy = false;
+    deleted = false;
+}
+
+Node* Node::Dummy(){
+    Node* n = new Node(0);
+    n->is_dummy = true;
+    return n;
+}
+
+bool Node::is_smaller_than(Node* n) {
+    return this->is_smaller_than(n->data);
+}
+
+bool Node::is_smaller_than(int n) {
+    // Everything is smaller than a dummy -> false
+    return  this->data < n && !this->is_dummy;
+}
+
+bool Node::is_equal(int n) {
+    // Dummies are not equal to any number -> false
+    return  this->data == n && !this->is_dummy;
+}
+
+void Node::lock() {
+    this->mut.lock();
+} 
+void Node::unlock() {
+    this->mut.unlock();
+}