Add SRTF Algorithm (#5011)

src/test/java/com/thealgorithms/scheduling/SRTFSchedulingTest.java

@@ -0,0 +1,61 @@
+package com.thealgorithms.scheduling;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import com.thealgorithms.devutils.entities.ProcessDetails;
+import java.util.ArrayList;
+import org.junit.jupiter.api.Test;
+
+class SRTFSchedulingTest {
+    ArrayList<ProcessDetails> processes;
+
+    public void initialization() {
+        processes = new ArrayList<>();
+        processes.add(new ProcessDetails("4", 0, 3));
+        processes.add(new ProcessDetails("3", 1, 8));
+        processes.add(new ProcessDetails("1", 2, 6));
+        processes.add(new ProcessDetails("5", 4, 4));
+        processes.add(new ProcessDetails("2", 5, 2));
+    }
+
+    @Test
+    public void Constructor() {
+        initialization();
+        SRTFScheduling s = new SRTFScheduling(processes);
+        assertEquals(3, s.processes.get(0).getBurstTime());
+        assertEquals(8, s.processes.get(1).getBurstTime());
+        assertEquals(6, s.processes.get(2).getBurstTime());
+        assertEquals(4, s.processes.get(3).getBurstTime());
+        assertEquals(2, s.processes.get(4).getBurstTime());
+    }
+
+    @Test
+    void evaluateScheduling() {
+        initialization();
+        SRTFScheduling s = new SRTFScheduling(processes);
+        s.evaluateScheduling();
+        assertEquals("4", s.ready.get(0));
+        assertEquals("4", s.ready.get(1));
+        assertEquals("4", s.ready.get(2));
+        assertEquals("1", s.ready.get(3));
+        assertEquals("5", s.ready.get(4));
+        assertEquals("2", s.ready.get(5));
+        assertEquals("2", s.ready.get(6));
+        assertEquals("5", s.ready.get(7));
+        assertEquals("5", s.ready.get(8));
+        assertEquals("5", s.ready.get(9));
+        assertEquals("1", s.ready.get(10));
+        assertEquals("1", s.ready.get(11));
+        assertEquals("1", s.ready.get(12));
+        assertEquals("1", s.ready.get(13));
+        assertEquals("1", s.ready.get(14));
+        assertEquals("3", s.ready.get(15));
+        assertEquals("3", s.ready.get(16));
+        assertEquals("3", s.ready.get(17));
+        assertEquals("3", s.ready.get(18));
+        assertEquals("3", s.ready.get(19));
+        assertEquals("3", s.ready.get(20));
+        assertEquals("3", s.ready.get(21));
+        assertEquals("3", s.ready.get(22));
+    }
+}