Need to Create a Time.java and TimeTest.java Class.

The Time object represents a particular time of day such as 12:30 PM or 9:47 AM. You must ensure that all Time objects always have valid state as described in this document. Each Time object should have the following public behavior.

If any method or constructor is passed a parameter whose value is invalid, you should throw an IllegalArgumentException. In particular, you must enforce the following Time values should have valid numbers of hours (1-12) and minutes (0-59). For example, calling shift(120) on 11:30 AM should result in 01:30 PM. (NOT 11:150 AM!)

Here is my JUnit class, TimeInstructorTest.java

import org.junit.Assert; import org.junit.Test; import java.util.*; public class TimeInstructorTest { private static void assertHelper(int h, int m, boolean b, Time t){ Assert.assertEquals("hour should match", h, t.getHour()); Assert.assertEquals("minute should match", m, t.getMinute()); Assert.assertEquals("isPM should match", b, t.isPM()); } @Test public void constructorTest(){ //Given Time t = new Time(12, 59, true); Time t2 = new Time(1, 0, false); //When/Then assertHelper(12, 59, true, t); assertHelper(1, 0, false, t2); } private void constNegativeHelper(int h, int m, boolean b){ try { Time t = new Time(h, m, b); Assert.fail("hour "+ h + " and/or minute " + m + "isPM "+ b + " is invalid"); }catch(IllegalArgumentException e){ } } @Test public void constNegativeTest(){ constNegativeHelper(0,59, true); //00:59 PM is invalid constNegativeHelper(13,59, true); //13:59 PM is invalid constNegativeHelper(-5,59, false); //-5:59 AM is invalid constNegativeHelper(11,60, false); //11:60 AM is invalid constNegativeHelper(11,-1, false); //11:-1 AM is invalid } @Test public void fromStringTest(){ Time t = Time.fromString("02:59 PM"); assertHelper(2, 59, true, t); Time t2 = Time.fromString("12:59 AM"); assertHelper(12, 59, false, t2); Time t3 = Time.fromString("05:05 PM"); assertHelper(5, 5, true, t3); } @Test public void toStringTest() { Time t = new Time(3, 1, false); Assert.assertEquals("03:01 AM", t.toString()); Time t2 = new Time(12, 20, false); Assert.assertEquals("12:20 AM", t2.toString()); Time t3 = new Time(6, 0, true); Assert.assertEquals("06:00 PM", t3.toString()); } @Test public void equalsTest(){ Time t = new Time(5, 0, false); Time t2 = new Time(5, 0, false); Time t3 = t; Assert.assertTrue(t.equals(t2)); Assert.assertTrue(t2.equals(t)); Assert.assertTrue(t.equals(t3)); Assert.assertEquals(t.hashCode(), t2.hashCode()); Assert.assertEquals(t3.hashCode(), t.hashCode()); } private void fromStringTestHelper(String str){ try { Time.fromString(str); Assert.fail("str is invalid format"); } catch (IllegalArgumentException e) { } } @Test public void fromStringNegativeTest(){ fromStringTestHelper("hello world"); fromStringTestHelper("when is thanks-giving?"); fromStringTestHelper("5:03 PM"); fromStringTestHelper("05:03 pM"); fromStringTestHelper("05;06 AM"); fromStringTestHelper("05:065AM"); fromStringTestHelper("05:05 XX"); fromStringTestHelper("13:59 PM"); fromStringTestHelper("12:60 AM"); } @Test public void equalsNegativeTest(){ Time t = new Time(5, 0, false); Time t2 = new Time(5, 0, true); Assert.assertFalse(t.equals(t2)); Assert.assertFalse(t2.equals(t)); } @Test public void hashCodeTest(){ Time t = new Time(5, 0, false); t.shift(10); Time t2 = new Time(5, 10, false); Assert.assertTrue(t.equals(t2)); Assert.assertTrue(t2.equals(t)); Assert.assertEquals(t.hashCode(), t2.hashCode()); } @Test public void hashSetTest(){ Set set = new HashSet(); Time t = new Time(12, 59, false); set.add(t); Time t2 = new Time(12, 59, false); Assert.assertTrue(set.contains(t2)); set.remove(t2); Assert.assertFalse(set.contains(t2)); Assert.assertFalse(set.contains(new Time(12, 59, false))); } @Test public void shiftTest(){ Time t = new Time (12, 59, false); //12:59 AM t.shift(120); //02:59 AM Assert.assertEquals("02:59 AM", t.toString()); t.shift(1); // Add 1 min Assert.assertEquals("03:00 AM", t.toString()); t.shift(72); // Add 1 hour 12 min Assert.assertEquals("04:12 AM", t.toString()); t.shift(1920); //Add 32 hours (24 hours + 8 hours) the same as adding 8 hours Assert.assertEquals("12:12 PM", t.toString()); t.shift(717); //Add 11 hours 57 minute Assert.assertEquals("12:09 AM", t.toString()); t.shift(1259); //Add 20 hours 59 minute Assert.assertEquals("09:08 PM", t.toString()); t.shift(172); //Add 2 hours 52 min Assert.assertEquals("12:00 AM", t.toString()); } @Test public void cloneTest(){ Time t1 = new Time(9, 9, false); Time t2 = t1.clone(); assertHelper(9, 9, false, t2); Assert.assertTrue(t1.equals(t2)); Assert.assertFalse(t1 == t2); Assert.assertEquals(t1.getClass(), t2.getClass()); } @Test public void compareToTest(){ Listlist = new ArrayList<>(); String expected = "[12:00 AM, 12:59 AM, 01:00 AM, 01:59 AM, 11:00 AM, 11:59 AM, 12:00 PM, 12:59 PM, " + "01:00 PM, 01:59 PM, 11:00 PM, 11:59 PM]"; list.add(new Time(1, 00, false)); //1:00 AM list.add(new Time(1, 00, true)); //1:00 PM list.add(new Time(1, 59, false)); list.add(new Time(1, 59, true)); list.add(new Time(11, 59, false)); list.add(new Time(11, 59, true)); list.add(new Time(11, 00, false)); list.add(new Time(11, 00, true)); list.add(new Time(12, 59, false)); list.add(new Time(12, 59, true)); list.add(new Time(12, 00, false)); list.add(new Time(12, 00, true)); Collections.sort(list); Assert.assertEquals(expected, list + ""); } }