Added Task Adding, Removing, Editing and corrected some relatex tests. Coverage still not 100%

src/main/java/hhn/temp/project/AssignmentManager.java

@@ -7,13 +7,15 @@ import java.util.Map;
 
 public class AssignmentManager {
     Map<Integer, Worker> workerMap;
-    List<Task> taskList;
+    Map<Integer, Task> taskMap;
     int workerIdCounter;
+    int taskIdCounter;
 
     public AssignmentManager() {
         workerMap = new HashMap<>();
-        taskList = new ArrayList<>();
+        taskMap = new HashMap<>();
         int workerIdCounter = 1000;
+        int taskIdCounter = 0;
     }
 
     public int createWorker(String name) {
@@ -22,18 +24,34 @@ public class AssignmentManager {
         return workerIdCounter;
     }
     public int addTask(int workerId, String name, String description) {
-        return 0;
+        if (!workerMap.containsKey(workerId) || name == null || description == null) {
+            throw new IllegalArgumentException("WorkerId must exist and name or description can't be null");
+        }
+        Task task = new Task(++taskIdCounter, workerId, name, description, this);
+        taskMap.put(taskIdCounter, task);
+        return taskIdCounter;
     }
     public Task getTask(int taskId) {
-        return null;
+        if (!taskMap.containsKey(taskId)) {
+            throw new IllegalArgumentException("Task Id does not exist");
+        }
+        return taskMap.get(taskId);
     }
-    public ArrayList<Task> getTaskList() {
-        return null;
+    public Map<Integer, Task> getTaskMap() {
+        return taskMap;
     }
     public void editTask(int workerId, int taskId, String name, String description) {
-
+        if (!workerMap.containsKey(workerId) || !taskMap.containsKey(taskId)) {
+            throw new IllegalArgumentException("Task Id or Worker Id does not exist");
+        }
+        Task task = taskMap.get(taskId);
+        task.setName(name);
+        task.setDescription(description);
     }
     public void removeTask(int taskId) {
-
+        if (!taskMap.containsKey(taskId)) {
+            throw new IllegalArgumentException("Task Id does not exist");
+        }
+        taskMap.remove(taskId);
     }
 }