PowTest.java

packagecom.thealgorithms.maths;

importstaticorg.junit.jupiter.api.Assertions.assertEquals;
importstaticorg.junit.jupiter.api.Assertions.assertThrows;

importorg.junit.jupiter.api.Test;
importorg.junit.jupiter.params.ParameterizedTest;
importorg.junit.jupiter.params.provider.CsvSource;

publicclassPowTest {
@ParameterizedTest
@CsvSource({"2, 0, 1", "0, 2, 0", "2, 10, 1024", "10, 2, 100", "5, 3, 125", "3, 4, 81"})
voidtestPow(intbase, intexponent, longexpected) {
assertEquals(expected, Pow.pow(base, exponent), "Failed for base: " + base + " and exponent: " + exponent);
 }

@Test
voidtestPowThrowsExceptionForNegativeExponent() {
assertThrows(IllegalArgumentException.class, () -> Pow.pow(2, -1));
 }

@Test
voidtestPowHandlesLargeNumbers() {
assertEquals(1048576, Pow.pow(2, 20));
 }

@Test
voidtestPowHandlesZeroBase() {
assertEquals(0, Pow.pow(0, 5));
 }

@Test
voidtestPowHandlesOneBase() {
assertEquals(1, Pow.pow(1, 100));
 }
}