Add JUnit tests for Storage.java, TaskList.java

src/test/java/duke/StorageTest.java

@@ -0,0 +1,18 @@
+package duke;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.IOException;
+
+import org.junit.jupiter.api.Test;
+
+public class StorageTest {
+    @Test
+    public void loadTest() throws DukeException, IOException {
+        Storage storage = new Storage("data/tasks.txt");
+        TaskList tasks = new TaskList(storage.load());
+        int expectedSize = 3;
+        int actualSize = tasks.getTaskArrayList().size();
+        assertEquals(expectedSize, actualSize);
+    }
+}

src/test/java/duke/TaskListTest.java

@@ -0,0 +1,73 @@
+package duke;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.ArrayList;
+
+import org.junit.jupiter.api.Test;
+
+import duke.task.Deadline;
+import duke.task.Event;
+import duke.task.Task;
+import duke.task.Todo;
+
+public class TaskListTest {
+
+    @Test
+    public void addTest() throws DukeException {
+        TaskList tasks = new TaskList();
+        ArrayList<Task> list = tasks.getTaskArrayList();
+
+        int actualSizeZero = list.size();
+
+        assertEquals(0 , actualSizeZero);
+
+        Todo t = new Todo("go home");
+        Deadline d = new Deadline("cs homework", "2022-10-19");
+        Event e = new Event("", "2022-10-13");
+
+        tasks.add(t);
+        int actualSizeOne = list.size();
+        tasks.add(d);
+        int actualSizeTwo = list.size();
+        tasks.add(e);
+        int actualSizeThree = list.size();
+
+        assertEquals(1 , actualSizeOne);
+        assertEquals(2 , actualSizeTwo);
+        assertEquals(3 , actualSizeThree);
+
+        Task t1 = list.get(0);
+        Task t2 = list.get(1);
+        Task t3 = list.get(2);
+
+        assertEquals(t, t1);
+        assertEquals(d, t2);
+        assertEquals(e, t3);
+    }
+
+    @Test
+    public void deleteTest() throws DukeException {
+        TaskList tasks = new TaskList();
+        ArrayList<Task> list = tasks.getTaskArrayList();
+
+        Todo t = new Todo("go home");
+        Deadline d = new Deadline("cs homework", "2022-10-19");
+        Event e = new Event("", "2022-10-13");
+
+        tasks.add(t);
+        tasks.add(d);
+        tasks.add(e);
+
+        int actualSizeInitial = list.size();
+        assertEquals(3, actualSizeInitial);
+
+        tasks.delete(2); // Delete Deadline
+        int actualSizeEnd = list.size();
+        assertEquals(2, actualSizeEnd);
+        Task t1 = list.get(0);
+        Task t2 = list.get(1);
+        assertEquals(t, t1);
+        assertEquals(e, t2);
+    }
+}