add test cases for minimizing lateness

Author: inishantjain

src/test/java/com/thealgorithms/greedyalgorithms/MinimizingLatenessTest.java

@@ -0,0 +1,42 @@
+package com.thealgorithms.greedyalgorithms;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class MinimizingLatenessTest extends MinimizingLateness {
+
+    @Test
+    void testCalculateLateness() {
+        // Test case with three jobs
+        Job job1 = new Job("Job1", 4, 6);
+        Job job2 = new Job("Job2", 2, 8);
+        Job job3 = new Job("Job3", 1, 9);
+        Job job4 = new Job("Job4", 5, 9);
+        Job job5 = new Job("Job5", 4, 10);
+        Job job6 = new Job("Job6", 3, 5);
+
+        calculateLateness(job1, job2, job3, job4, job5, job6);
+
+        // Check lateness for each job
+        assertEquals(6, job4.lateness);
+        assertEquals(0, job6.lateness);
+        assertEquals(1, job2.lateness);
+    }
+
+    @Test
+    void testCheckStartTime() {
+
+        Job job1 = new Job("Job1", 2, 5);
+        Job job2 = new Job("Job2", 1, 7);
+        Job job3 = new Job("Job3", 3, 8);
+        Job job4 = new Job("Job4", 2, 4);
+        Job job5 = new Job("Job5", 4, 10);
+
+        MinimizingLateness.calculateLateness(job1, job2, job3, job4, job5);
+
+        assertEquals(2, job1.startTime);
+        assertEquals(5, job3.startTime);
+        assertEquals(8, job5.startTime);
+    }
+}