Add More Tests (#4148)

src/test/java/com/thealgorithms/maths/LucasSeriesTest.java

@@ -0,0 +1,27 @@
+package com.thealgorithms.maths;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class LucasSeriesTest {
+    @Test
+    void lucasSeriesTwo() {
+        assertEquals(2, LucasSeries.lucasSeries(1));
+        assertEquals(2, LucasSeries.lucasSeriesIteration(1));
+    }
+    @Test
+    void lucasSeriesOne() {
+        assertEquals(1, LucasSeries.lucasSeries(2));
+        assertEquals(1, LucasSeries.lucasSeriesIteration(2));
+    }
+    @Test
+    void lucasSeriesSeven() {
+        assertEquals(7, LucasSeries.lucasSeries(5));
+        assertEquals(7, LucasSeries.lucasSeriesIteration(5));
+    }
+    @Test
+    void lucasSeriesEleven() {
+        assertEquals(123, LucasSeries.lucasSeries(11));
+        assertEquals(123, LucasSeries.lucasSeriesIteration(11));
+    }
+}