refactoring: Added parameterization to enumeration test (#1698)

Signed-off-by: Elvys Soares <eas5@cin.ufpe.br>

Co-authored-by: Subhrodip Mohanta <hello@subho.xyz>

multiton/pom.xml

@@ -38,6 +38,11 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>test</scope>
     </dependency>
+      <dependency>
+          <groupId>org.junit.jupiter</groupId>
+          <artifactId>junit-jupiter-params</artifactId>
+          <scope>test</scope>
+      </dependency>
   </dependencies>
   <build>
     <plugins>

multiton/src/test/java/com/iluwatar/multiton/NazgulEnumTest.java

@@ -25,7 +25,8 @@
 
 import static org.junit.jupiter.api.Assertions.assertSame;
 
-import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EnumSource;
 
 /**
  * @author anthony
@@ -37,15 +38,14 @@ class NazgulEnumTest {
    * Check that multiple calls to any one of the instances in the multiton returns
    * only that one particular instance, and do that for all instances in multiton
    */
-  @Test
-  void testTheSameObjectIsReturnedWithMultipleCalls() {
-    for (var i = 0; i < NazgulEnum.values().length; i++) {
-      var instance1 = NazgulEnum.values()[i];
-      var instance2 = NazgulEnum.values()[i];
-      var instance3 = NazgulEnum.values()[i];
-      assertSame(instance1, instance2);
-      assertSame(instance1, instance3);
-      assertSame(instance2, instance3);
-    }
+  @ParameterizedTest
+  @EnumSource
+  void testTheSameObjectIsReturnedWithMultipleCalls(NazgulEnum nazgulEnum) {
+    var instance1 = nazgulEnum;
+    var instance2 = nazgulEnum;
+    var instance3 = nazgulEnum;
+    assertSame(instance1, instance2);
+    assertSame(instance1, instance3);
+    assertSame(instance2, instance3);
   }
 }