2.reduce.test.js

const pokemons = require('./pokeData')
const {
    calculateTotalPokemonWeight,
    calculateAverageSpawnChance,
    calculateTotalEggDistance,
    getHeaviestPokemon,
    categorizePokemonsByRarity
} = require('./2.reduce');

describe('Array methods: reduce:', () => {
    test.skip('calculateTotalPokemonWeight: calculates the combined weight of all 151 pokemon', () => {
        const totalweight = calculateTotalPokemonWeight(pokemons)
        expect(totalweight).toBe(6938.7)
    });

    test.skip('calculateAverageSpawnChance: calculates the average spawn_chance of a pokemon', () => {
        const averageSpawnChance = calculateAverageSpawnChance(pokemons)
        expect(averageSpawnChance).toBeCloseTo(0.73, 2)
    })

    test.skip('calculateTotalEggDistance: calculates how for you have to walk to hatch one of each pokemon egg', () => {
        const totalEggDistance = calculateTotalEggDistance(pokemons)
        expect(totalEggDistance).toBe(408)
    })

    test.skip('getHeaviestPokemon: returns the heaviest pokemon from an array of pokemons', () => {
        const heaviestPokemon = getHeaviestPokemon(pokemons)
        expect(heaviestPokemon.id).toBe(143)
    })

    test.skip('catergorizePokemonsByRarity: catgorizes an array of pokemons based on spawn_chance', () => {
        const pokemonsByRarity = categorizePokemonsByRarity(pokemons)
        expect(pokemonsByRarity).toEqual(expect.objectContaining({
            common: expect.any(Array),
            rare: expect.any(Array),
            legendary: expect.any(Array)
        }))
        expect(pokemonsByRarity.common.length).toBe(66)
        expect(pokemonsByRarity.rare.length).toBe(61)
        expect(pokemonsByRarity.legendary.length).toBe(24)
    })
})