add check to handle empty enums

Author: SirCotare

src/main/java/it/aboutbits/springboot/testing/testdata/base/FakerExtended.java

@@ -35,6 +35,9 @@ public FakerExtended(FakeValuesService fakeValuesService, FakerContext context)
 
     public <T extends Enum<?>> T randomEnumValue(Class<T> enumClass) {
         var values = enumClass.getEnumConstants();
+        if (values.length == 0) {
+            throw new IllegalArgumentException("Enum class must have at least one value");
+        }
         return values[this.random().nextInt(values.length)];
     }
 }