Add test for list commands

src/test/java/seedu/address/model/patient/ApptDateMatchesPredicateTest.java

@@ -0,0 +1,60 @@
+package seedu.address.model.patient;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.time.LocalDate;
+
+import org.junit.jupiter.api.Test;
+
+import seedu.address.logic.parser.ParserUtil;
+import seedu.address.logic.parser.exceptions.ParseException;
+
+
+class ApptDateMatchesPredicateTest {
+
+
+    @Test
+    void testEquals() {
+        String firstApptDate = "01/02/2024";
+        LocalDate firstAppt = null;
+        String firstApptDate2 = "01/02/2024";
+        LocalDate firstAppt2 = null;
+
+        String secondApptDate = "2024-2-1";
+        LocalDate secondAppt = null;
+        try {
+            firstAppt = ParserUtil.parseAppointment(firstApptDate).appointment;
+            firstAppt2 = ParserUtil.parseAppointment(firstApptDate2).appointment;
+            secondAppt = ParserUtil.parseAppointment(secondApptDate).appointment;
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
+
+        ApptDateMatchesPredicate firstPredicate = new ApptDateMatchesPredicate(firstAppt);
+        ApptDateMatchesPredicate firstPredicate2 = new ApptDateMatchesPredicate(firstAppt2);
+        ApptDateMatchesPredicate secondPredicate = new ApptDateMatchesPredicate(secondAppt);
+        assertTrue(firstPredicate.equals(firstPredicate2));
+        assertTrue(firstPredicate.equals(secondPredicate));
+        assertTrue(firstPredicate2.equals(secondPredicate));
+    }
+
+    @Test
+    void testNotEquals() {
+        String firstApptDate = "01/02/2024";
+        LocalDate firstAppt = null;
+
+        String secondApptDate = "01/01/2024";
+        LocalDate secondAppt = null;
+        try {
+            firstAppt = ParserUtil.parseAppointment(firstApptDate).appointment;
+            secondAppt = ParserUtil.parseAppointment(secondApptDate).appointment;
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
+
+        ApptDateMatchesPredicate firstPredicate = new ApptDateMatchesPredicate(firstAppt);
+        ApptDateMatchesPredicate secondPredicate = new ApptDateMatchesPredicate(secondAppt);
+        assertFalse(firstPredicate.equals(secondPredicate));
+    }
+}