Added JUnit tests for some methods

src/main/java/Duke.java

@@ -3,7 +3,7 @@
 
 public class Duke {
 
-    private static void startBot() throws DukeException, IOException {
+    protected static void startBot() throws DukeException, IOException {
         Storage storage = new Storage("data" + File.separator +  "duke.txt");
         TaskList dukeTaskList = new TaskList(storage.loadData());
         UI dukeUI = new UI();

src/test/java/DeadlineTest.java

@@ -0,0 +1,15 @@
+import org.junit.jupiter.api.Test;
+import java.time.LocalDate;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class DeadlineTest {
+    @Test
+    void toStringTest() {
+        Deadline dummyDeadline = new Deadline("study for exam", LocalDate.parse("2020-12-12"));
+        assertEquals("[D]" + "[\u2718]" + " study for exam" +
+                "(by: 12 Dec 2020)", dummyDeadline.toString());
+    }
+
+
+}

src/test/java/DukeTest.java

@@ -0,0 +1,10 @@
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class DukeTest {
+    @Test
+    void dummyTest() {
+        assertEquals(2,2);
+    }
+}

src/test/java/EventCommandTest.java

@@ -0,0 +1,16 @@
+import org.junit.jupiter.api.Test;
+import java.util.ArrayList;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+
+public class EventCommandTest {
+    @Test
+    void executeTest() throws WrongDateFormatException, InvalidTaskDescriptionException {
+        UI dukeUI = new UI();
+        TaskList tasks = new TaskList(new ArrayList<>(){});
+        EventCommand dummyEventCmd = new EventCommand("event read book/2020-12-12");
+        dummyEventCmd.execute(tasks, dukeUI);
+        assertEquals("[E]" + "[\u2718]" + " read book" +
+                " (at: 12 Dec 2020)", tasks.getTaskList().get(0).toString());
+    }
+}

src/test/java/TaskListTest.java

@@ -0,0 +1,16 @@
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDate;
+import java.util.ArrayList;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class TaskListTest {
+    @Test
+    void addTaskTest() {
+        TaskList tasks = new TaskList(new ArrayList<>());
+        Deadline dummyDeadline = new Deadline("get drunk", LocalDate.parse("2020-12-25"));
+        tasks.addTask(dummyDeadline);
+        assertEquals(dummyDeadline, tasks.getTaskList().get(0));
+    }
+}

src/test/java/TodoTest.java

@@ -0,0 +1,10 @@
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class TodoTest {
+    @Test
+    void toStringTest() {
+        Todo dummyTodo = new Todo("go on date with gf");
+        assertEquals("[T]" + "[\u2718]" + " go on date with gf", dummyTodo.toString());
+    }
+}