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test/project/BadCaseTaskTest.java

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+package project;
+import hhn.temp.project.Main;
+import hhn.temp.project.Task;
+import hhn.temp.project.TaskManager;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class BadCaseTaskTest {
+
+  private TaskManager taskManager;
+
+  @BeforeEach
+  public void setup() {
+    Main main = new Main();
+    taskManager = new TaskManager();
+
+  }
+
+  @Test
+  @DisplayName("Assert an IllegalArgumentException when you create a new Task with no or wrong Name, Description")
+  public void assertExceptionOnCreateNewTask() {
+    assertThrows(IllegalArgumentException.class,() -> taskManager.createTask("", null));
+    assertThrows(IllegalArgumentException.class,() -> taskManager.createTask(null, ""));
+    assertThrows(IllegalArgumentException.class,() -> taskManager.createTask(null, null));
+    assertThrows(IllegalArgumentException.class,() -> taskManager.createTask("", ""));
+    assertThrows(IllegalArgumentException.class,() -> taskManager.createTask("test", ""));
+    assertThrows(IllegalArgumentException.class,() -> taskManager.createTask("", "test"));
+
+
+  }
+
+  @Test
+  @DisplayName("Assert an IllegalArgumentException when you edit a exits Task")
+  public void assertExceptionOnEditATask() {
+    String name = "Name";
+    String description = "Description";
+    Task task = taskManager.createTask(name, description);
+
+    assertThrows(IllegalArgumentException.class, () -> task.setDescription(null));
+    assertThrows(IllegalArgumentException.class, () -> task.setDescription(""));
+    assertThrows(IllegalArgumentException.class, () -> task.setStatus(null));
+
+
+  }
+
+}