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3.reduce.test.js
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3.reduce.test.js
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const pokemons = require("./pokeData");
const {
calculateTotalPokemonWeight,
calculateAverageSpawnChance,
calculateTotalEggDistance,
getHeaviestPokemon,
categorizePokemonsByRarity,
} = require("./3.reduce");
test("calculateTotalPokemonWeight: calculates the combined weight of all 151 pokemon", () => {
const totalweight = calculateTotalPokemonWeight();
expect(totalweight).toBe(6938.7);
});
test("calculateAverageSpawnChance: calculates the average spawn_chance of a pokemon", () => {
const averageSpawnChance = calculateAverageSpawnChance();
expect(averageSpawnChance).toBeCloseTo(0.73, 2);
});
test("calculateTotalEggDistance: calculates how for you have to walk to hatch one of each pokemon egg", () => {
const totalEggDistance = calculateTotalEggDistance();
expect(totalEggDistance).toBe(408);
});
test("getHeaviestPokemon: returns the heaviest pokemon from an array of pokemons", () => {
const heaviestPokemon = getHeaviestPokemon();
expect(heaviestPokemon.id).toBe(143);
});
test("catergorizePokemonsByRarity: catgorizes an array of pokemons based on spawn_chance", () => {
const pokemonsByRarity = categorizePokemonsByRarity();
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);
});
test("getRarestGym: gets the gym with the most legendary (spawn_chance < 0.01) pokemon", () => {
const rarestGym = getRarestGym();
expect(rarestGym).toEqual({ id: 1, city: "Saffron City", trainerId: 2 });
});