Java/src/test/java/com/examplehub/maths/OddCheckTest.java at master · alimogh/Java · GitHub

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package com.examplehub.maths;

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

import com.examplehub.utils.RandomUtils;

import org.junit.jupiter.api.Test;

class OddCheckTest {

@Test

void isOdd() {

for (int i = -99; i <= 99; i += 2) {

assertTrue(OddCheck.isOdd(i));

}

@Test

void isOddFaster() {

for (int i = -99; i <= 99; i += 2) {

assertTrue(OddCheck.isOddFaster(i));

}

void testSpeed() {

int[] ints = RandomUtils.randomInts(-1000, 1000, Integer.MAX_VALUE);

long startTime = System.nanoTime();

for (int j : ints) {

boolean isOdd = OddCheck.isOdd(j);

}

long slowTime = System.nanoTime() - startTime;

startTime = System.nanoTime();

for (int anInt : ints) {

boolean isOdd = OddCheck.isOddFaster(anInt);

}

long fasterTime = System.nanoTime() - startTime;

assertTrue(fasterTime < slowTime);

}

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