Add JUnit tests

Manually entered test cases and verified with provided

Now can partially automate testing with help of JUnit

Author: sjq-sohjunqi

src/main/java/duke/Task.java

@@ -44,7 +44,27 @@ public boolean getDone() {
 	public void mark() {
 		done = true;
 	}
-	
+
+	public boolean equals(Task t) {
+		if (this.type == t.type) {
+			if (!this.name.equals(t.name))
+				return false;
+
+			if (this.type == 'D' || this.type == 'E') {
+				if (this.dateTime.compareTo(t.dateTime) != 0)
+					return false;
+			}
+
+			if (this.done != t.done)
+				return false;
+
+			return true;
+
+		} else {
+			return false;
+		}
+	}
+
 	public String toString() {
 
 		String str = "["+type+"]";

src/main/java/duke/TaskList.java

@@ -54,5 +54,17 @@ public int count() {
 	public Task getTask(int i) {
 		return taskList.get(i);
 	}
-	
+
+	public boolean equals(TaskList tl) {
+		if (this.count() == tl.count()) {
+			for (int i = 0; i < this.count(); i++) {
+				if (!this.taskList.get(i).equals(tl.getTask(i)))
+					return false;
+			}
+			return true;
+		} else {
+			return false;
+		}
+	}
+
 }

src/test/java/duke/DukeTest.java

@@ -0,0 +1,80 @@
+import duke.*;
+
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDate;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class DukeTest {
+    @Test
+    public void testSave() {
+        TaskList tl = new TaskList();
+        tl.add(new Task("list 1"));
+        tl.add(new Task("list 2", 'D', LocalDate.now()));
+        tl.add(new Task("list 3", 'E', LocalDate.now()));
+
+        Storage st = new Storage("tasklist2");
+        st.saveTaskList(tl);
+
+        TaskList newTl = st.loadTaskList();
+
+        assertEquals(true, tl.equals(newTl));
+    }
+
+    @Test
+    public void testDelete() {
+       TaskList tl = new TaskList();
+        tl.add(new Task("list 1"));
+        tl.add(new Task("list 2", 'D', LocalDate.now()));
+        tl.add(new Task("list 3", 'E', LocalDate.now()));
+
+        TaskList newTl = new TaskList();
+        newTl.add(new Task("list 1"));
+        newTl.add(new Task("list 3", 'E', LocalDate.now()));
+
+        Parser p = new Parser();
+        p.process("delete 2", tl);
+
+        assertEquals(true, tl.equals(newTl));
+
+    }
+
+    @Test
+    public void testAdd() {
+        LocalDate ld = LocalDate.parse("2020-01-05");
+
+        TaskList tl = new TaskList();
+        tl.add(new Task("list 1"));
+        tl.add(new Task("list 2", 'D', ld));
+        tl.add(new Task("list 3", 'E', ld));
+
+        TaskList newTl = new TaskList();
+
+        Parser p = new Parser();
+        p.process("todo list 1", newTl);
+        p.process("deadline list 2 /by 2020-01-05", newTl);
+        p.process("event list 3 /at 2020-01-05", newTl);
+
+        assertEquals(true, tl.equals(newTl));
+
+    }
+
+    @Test
+    public void testDone() {
+        LocalDate ld = LocalDate.parse("2020-01-05");
+
+        TaskList tl = new TaskList();
+        tl.add(new Task("list 1"));
+        tl.add(new Task("list 2", 'D', ld));
+        tl.add(new Task("list 3", 'E', ld));
+        try {
+            tl.markDone(2);
+        } catch (DukeException de) {
+
+        }
+
+        assertEquals(true, tl.getTask(1).getDone());
+
+    }
+}

src/test/tasklist2

@@ -0,0 +1,3 @@
+T|ND|list 1
+D|ND|list 2|2021-01-26
+E|ND|list 3|2021-01-26