DataWriterTest.java

//Tested by RJ Allen
import static org.junit.jupiter.api.Assertions.*;

import java.util.ArrayList;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.platform.reporting.shadow.org.opentest4j.reporting.events.core.Data;
public class DataWriterTest {
	private UserList users = UserList.getInstance();
    private ProjectList project = ProjectList.getInstance();
    //Task List will be remove and and moved to projectList in the future 
    // This will mostly be used for testing purposes
    private TaskList task = TaskList.getInstance();
	private ArrayList<Task> taskList = task.geTasksList();
	private ArrayList<User> userList = users.getUserList();
    private ArrayList<Project> projectList = project.getProjectList();
    private ArrayList<Comment> comment = new ArrayList<Comment>();

    /* main problem: TaskList.size() seems to return null */
	
	@BeforeEach
	public void setup() {
		UserList.getInstance().getUserList().clear();
        //task.getInstance().geTasksList().clear();
        ProjectList.getInstance().getProjectList().clear();
		DataWriter.saveUsers();
        DataWriter.saveProjects();
        DataWriter.saveTasks();
	}
	
	@AfterEach
	public void tearDown() {
		UserList.getInstance().getUserList().clear();
        TaskList.getInstance().geTasksList().clear();
        ProjectList.getInstance().getProjectList().clear();
		DataWriter.saveUsers();
        DataWriter.saveProjects();
        DataWriter.saveTasks();
	}
	
	
	@Test
	void testWritingZeroUsers() {
		userList = DataLoader.GetUsers();
        projectList = DataLoader.GetProjects();
        taskList = DataLoader.GetTask();

		assertEquals(0, userList.size());
	}

	@Test
	void testWritingOneUser() {
		userList.add(new User("asmith","asdf", "Amy", "Smith",  "asdf@email.com", 1));
		DataWriter.saveUsers();
		assertEquals("asmith", DataLoader.GetUsers().get(0).getUserName());
	}

    @Test
    void testWritingOneProject() {
        projectList.add(new Project("Project", "Project Desc", "ProjectAuthor"));
        DataWriter.saveProjects();
        assertEquals("Project", DataLoader.GetProjects().get(0).getProjectName());
    }

    @Test
    void testWritingEmptyProject() {
        projectList.add(new Project("", "", ""));
         DataWriter.saveProjects();
         assertEquals("", DataLoader.GetProjects().get(0).getProjectName());
    }

    @Test
    void testWritingNullProject() {
        projectList.add(new Project(null, "", ""));
        DataWriter.saveProjects();
        assertEquals(null, DataLoader.GetProjects().get(0).getProjectName());
    }
     @Test
    void testWritingEmptyTask() {
        comment.add(new Comment("", "", ""));
        TaskList.addTask("", "", 0, Category.BUG, comment, false, 0, null);
        DataWriter.saveTasks();
         assertEquals("", DataLoader.GetProjects().get(0).getProjectName());
    }
	
    @Test
    void testWritingNullTask() {
        comment.add(new Comment("N/A", "N/A", "N/A"));
        TaskList.addTask(null, "Task2Desc", 0, Category.BUG, comment, false, 0, null);
        DataWriter.saveTasks();
        assertEquals(null, DataLoader.GetTask().get(0).getTaskName());
    }
	
    @Test
    void WritingOneTask() {

        comment.add(new Comment("N/A", "N/A", "N/A"));
        TaskList.addTask("Task1", "Task1Desc", 0, Category.BUG, comment, false, 0, "#000000");
        DataWriter.saveTasks();
         assertEquals("Task1", DataLoader.GetTask().get(0).getTaskName());
    }


	@Test
	void testWritingFiveUsers() {
		userList.add(new User("bsmith","asdf", "Amy", "Smith",  "asdf@email.com", 1));
		userList.add(new User("csmith","asdf", "Amy", "Smith",  "asdf@email.com", 1));
		userList.add(new User("dsmith","asdf", "Amy", "Smith",  "asdf@email.com", 1));
		userList.add(new User("esmith","asdf", "Amy", "Smith",  "asdf@email.com", 1));
		userList.add(new User("fsmith","asdf", "Amy", "Smith",  "asdf@email.com", 1));
		DataWriter.saveUsers();
		assertEquals("fsmith", DataLoader.GetUsers().get(4).getUserName());
	}
	
	@Test
	void testWritingEmptyUser() {
		userList.add(new User("", "", "","", "", 0));
		DataWriter.saveUsers();
		assertEquals("", DataLoader.GetUsers().get(0).getUserName());
	}
	
	@Test
	void testWritingNullUser() {
		userList.add(new User(null, "", "", "", "", 0));
		DataWriter.saveUsers();
		assertEquals(null, DataLoader.GetUsers().get(0).getUserName());
	}


    
}