Added program to check either number is Evil or Odious (#6958)

added program for evil number

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

@@ -0,0 +1,28 @@
+package com.thealgorithms.maths;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class EvilNumberTest {
+    @ParameterizedTest
+    @CsvSource({"0", "3", "10", "129", "222", "500", "777", "1198"})
+    void evilNumbersTest(int n) {
+        assertTrue(EvilNumber.isEvilNumber(n));
+    }
+
+    @ParameterizedTest
+    @CsvSource({"1", "7", "100", "333", "555", "1199"})
+    void odiousNumbersTest(int n) {
+        assertFalse(EvilNumber.isEvilNumber(n));
+    }
+
+    @ParameterizedTest
+    @CsvSource({"-1"})
+    void throwsNegativeNumbersNotAllowed(int n) {
+        assertThrows(IllegalArgumentException.class, () -> EvilNumber.isEvilNumber(n));
+    }
+}