package com.zetcode.utils;

import org.junit.jupiter.api.BeforeAll;

import org.junit.jupiter.api.DisplayName;

import org.junit.jupiter.api.Test;

import java.util.List;

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

class MathUtilsTest {

private static List<Integer> vals;

@BeforeAll

static void setup() {

vals = List.of(2, 1, -2, 3, -1, 0, -1);

}

@Test

@DisplayName("testing sum of values")

void sumTest() {

var sum = MathUtils.sum(vals);

assertEquals(Integer.valueOf(2), sum);

}

@Test

@DisplayName("should get positive values")

void positiveTest() {

var positiveValues = MathUtils.positive(vals);

assertEquals(positiveValues, List.of(2, 1, 3));

}

@Test

@DisplayName("should get negative values")

void negativeTest() {

var negativeValues = MathUtils.negative(vals);

assertEquals(negativeValues, List.of(-2, -1, -1));

}

}