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package com.thealgorithms.maths;

import static org.junit.jupiter.api.Assertions.assertEquals;

import static org.junit.jupiter.api.Assertions.assertThrows;

import org.junit.jupiter.api.Test;

import org.junit.jupiter.params.ParameterizedTest;

import org.junit.jupiter.params.provider.CsvSource;

public class PowTest {

@ParameterizedTest

@CsvSource({"2, 0, 1", "0, 2, 0", "2, 10, 1024", "10, 2, 100", "5, 3, 125", "3, 4, 81"})

void testPow(int base, int exponent, long expected) {

assertEquals(expected, Pow.pow(base, exponent), "Failed for base: " + base + " and exponent: " + exponent);

}

@Test

void testPowThrowsExceptionForNegativeExponent() {

assertThrows(IllegalArgumentException.class, () -> Pow.pow(2, -1));

}

@Test

void testPowHandlesLargeNumbers() {

assertEquals(1048576, Pow.pow(2, 20));

}

@Test

void testPowHandlesZeroBase() {

assertEquals(0, Pow.pow(0, 5));

}

@Test

void testPowHandlesOneBase() {

assertEquals(1, Pow.pow(1, 100));

}

}