From ea05286c862828287aaf96a9e931b7303ed6940e Mon Sep 17 00:00:00 2001
From: laks-mi1099 <61744906+laks-mi1099@users.noreply.github.com>
Date: Sun, 23 Oct 2022 00:41:40 +0530
Subject: [PATCH] Add tests for PowerSum (#3603)

---
 .../thealgorithms/backtracking/PowerSum.java  | 19 -------------
 .../backtracking/PowerSumTest.java            | 28 +++++++++++++++++++
 2 files changed, 28 insertions(+), 19 deletions(-)
 create mode 100644 src/test/java/com/thealgorithms/backtracking/PowerSumTest.java

diff --git a/src/main/java/com/thealgorithms/backtracking/PowerSum.java b/src/main/java/com/thealgorithms/backtracking/PowerSum.java
index 3365255f4..907c8f44c 100644
--- a/src/main/java/com/thealgorithms/backtracking/PowerSum.java
+++ b/src/main/java/com/thealgorithms/backtracking/PowerSum.java
@@ -10,25 +10,6 @@ import java.util.Scanner;
  */
 public class PowerSum {
 
-    public static void main(String[] args) {
-        Scanner sc = new Scanner(System.in);
-        System.out.println("Enter the number and the power");
-        int N = sc.nextInt();
-        int X = sc.nextInt();
-        PowerSum ps = new PowerSum();
-        int count = ps.powSum(N, X);
-        //printing the answer.
-        System.out.println(
-            "Number of combinations of different natural number's raised to " +
-            X +
-            " having sum " +
-            N +
-            " are : "
-        );
-        System.out.println(count);
-        sc.close();
-    }
-
     private int count = 0, sum = 0;
 
     public int powSum(int N, int X) {
diff --git a/src/test/java/com/thealgorithms/backtracking/PowerSumTest.java b/src/test/java/com/thealgorithms/backtracking/PowerSumTest.java
new file mode 100644
index 000000000..ae16cc159
--- /dev/null
+++ b/src/test/java/com/thealgorithms/backtracking/PowerSumTest.java
@@ -0,0 +1,28 @@
+package com.thealgorithms.backtracking;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.Test;
+
+public class PowerSumTest {
+
+    @Test
+    void testNumberZeroAndPowerZero() {
+        PowerSum powerSum = new PowerSum();
+        int result = powerSum.powSum(0, 0);
+        assertEquals(1, result);
+    }
+
+    @Test
+    void testNumberHundredAndPowerTwo() {
+        PowerSum powerSum = new PowerSum();
+        int result = powerSum.powSum(100, 2);
+        assertEquals(3, result);
+    }
+  
+    @Test
+    void testNumberHundredAndPowerThree() {
+        PowerSum powerSum = new PowerSum();
+        int result = powerSum.powSum(100, 3);
+        assertEquals(1, result);
+    }
+    
+}