GSE2TaskTracker/test/project/BadCaseTaskTest.java

package project;
import hhn.temp.project.Main;
import hhn.temp.project.Task;
import hhn.temp.project.TaskManager;
import hhn.temp.project.TaskStatus;
import hhn.temp.project.expections.TaskAlreadyExistsException;
import hhn.temp.project.expections.TaskHasNoWorkerException;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.List;

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("ä#eadsew2", "test"));

  }

  @Test
  @DisplayName("Assert an IllegalArgumentException when you create a new Task with the same Name of a exits Task")
  public void assertExceptionOnCreateNewTaskWithExitsName() {
    String name = "Name";
    String description = "Description";
    assertDoesNotThrow(() -> taskManager.createTask(name, description));
    assertThrows(TaskAlreadyExistsException.class, () -> taskManager.createTask(name, description));

  }

  @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.setStatus(null));


  }

    @Test
    @DisplayName("Assert an IllegalArgumentException when calling a non-Existing Task")
    public void assertExceptionOnCallingANonextistingTask (){
      String wrongName = "Manager";
      String name = "Name";
      String description = "Description";
      Task task = taskManager.createTask(name, description);

      assertThrows(IllegalArgumentException.class, () -> taskManager.getTask(wrongName));
      assertThrows(IllegalArgumentException.class, () -> taskManager.getTask(23));

    }

  @Test
  @DisplayName("Assert an IllegalArgumentException when delete a existing Task with wrong arguments")
  public void assertExceptionOnDeletingTask (){
    String wrongName = "Manager";
    String name = "Name";
    String description = "Description";
    Task task = taskManager.createTask(name, description);

    assertThrows(IllegalArgumentException.class, () -> taskManager.deleteTask(null));
    assertThrows(IllegalArgumentException.class, () -> taskManager.deleteTask(""));
    assertThrows(IllegalArgumentException.class, () -> taskManager.deleteTask(wrongName));

  }

  @Test
  @DisplayName("Get a Exeption by setWorker and getWorker")
  public void assertExeptionBySetAndGetAuthorOfATask() {
    String name = "Name";
    String description = "Description";
    String workerName = "worker";

    Task task = taskManager.createTask(name, description);
    assertThrows(TaskHasNoWorkerException.class, () -> task.getWorker());
    assertThrows(IllegalArgumentException.class, () -> task.setWorker(null));
    assertThrows(IllegalArgumentException.class, () -> task.setWorker(""));
    assertThrows(IllegalArgumentException.class, () -> task.setWorker("ewrgi43rfoiw2öa#-"));

  }

}