Updated libraries and increased test coverage

src/main/java/com/mattrixwv/generators/TriangularNumberGenerator.java

@@ -1,10 +1,10 @@
 //JavaClasses/src/main/java/com/mattrixwv/generators/TriangularNumberGenerator.java
 //Mattrixwv
 // Created: 08-20-22
-//Modified: 08-20-22
+//Modified: 04-13-23
 //This class generates triangular numbers
 /*
-Copyright (C) 2022  Matthew Ellison
+Copyright (C) 2023  Matthew Ellison
 
 	This program is free software: you can redistribute it and/or modify
 	it under the terms of the GNU Lesser General Public License as published by
@@ -27,7 +27,8 @@ import java.util.NoSuchElementException;
 
 
 public class TriangularNumberGenerator implements Iterator<Long>{
-	private Long num;
+	protected long num;
+
 
 	public TriangularNumberGenerator(){
 		num = 1L;
@@ -35,23 +36,22 @@ public class TriangularNumberGenerator implements Iterator<Long>{
 
 	@Override
 	public boolean hasNext(){
-		return (num * num) > 0;
+		return ((num * num) + num) > num;
 	}
 
 	@Override
 	public Long next(){
-		Long newNum = ((num * num) + num) / 2;
-		++num;
-		if(num > 0){
-			return newNum;
-		}
-		else{
+		if(!hasNext()){
 			throw new NoSuchElementException("Number overflow");
 		}
+
+		Long newNum = ((num * num) + num) / 2L;
+		++num;
+		return newNum;
 	}
 
 	public static boolean isTriangular(Long x){
-		Long n = Math.round((Math.sqrt(1.0 + (8 * x)) - 1) / 2);
-		return (((n * n) + n) / 2) == x;
+		Long n = Math.round((Math.sqrt(1.0D + (8L * x)) - 1L) / 2L);
+		return (((n * n) + n) / 2L) == x;
 	}
 }