numbers/src/prime.class.test.ts

import {
  assert,
  assertEquals,
} from "https://deno.land/std@0.161.0/testing/asserts.ts";
import { Prime } from "./prime.class.ts";

Deno.test("Prime class", async (t) => {
  await t.step("static method isPrime()", async (t) => {
    await t.step("validate prime numbers", () => {
      [2, 3, 5, 7, 11, 13].forEach((number) => {
        assert(Prime.isPrime(number), `${number} is a prime`);
      });
    });

    await t.step("validate non-prime numbers", () => {
      [1, 4, 6, 8, 9, 10, 15].forEach((number) => {
        assert(!Prime.isPrime(number), `${number} is NOT a prime`);
      });
    });
  });

  await t.step("static method factors()", async (t) => {
    await t.step("returns the list of prime factors", () => {
      assertEquals(Prime.factors(13), [13]);
      assertEquals(Prime.factors(625), [5, 5, 5, 5]);
      assertEquals(Prime.factors(901255), [5, 17, 23, 461]);
      assertEquals(Prime.factors(93819012551), [11, 9539, 894119]);
    });
  });

  await t.step("static method isGood()", async (t) => {
    await t.step("validate good prime numbers (the deep version)", () => {
      [
        5,
        11,
        17,
        29,
        37,
        41,
        53,
        59,
        67,
        71,
        97,
        101,
        127,
        149,
        179,
        191,
        223,
        227,
        251,
        257,
        269,
        307,
        311,
        331,
        347,
        419,
        431,
        541,
        557,
        563,
        569,
        587,
        593,
        599,
        641,
        727,
        733,
        739,
        809,
        821,
        853,
        929,
        937,
        967,
      ].forEach((number) => {
        assert(Prime.isGood(number), `${number} is a good prime`);
      });
    });

    await t.step("validate non-prime numbers", () => {
      [1, 4, 6, 8, 9, 10, 15, 79, 137].forEach((number) => {
        assert(!Prime.isGood(number), `${number} is NOT a good prime`);
      });
    });
  });

  await t.step("static method isGoodWeak()", async (t) => {
    await t.step("validate good prime numbers (the weak version)", () => {
      [
        5,
        11,
        17,
        29,
        37,
        41,
        53,
        59,
        67,
        71,
        79,
        97,
        101,
        107,
        127,
        137,
        149,
        157,
        163,
        173,
        179,
        191,
        197,
        211,
        223,
        227,
        239,
        251,
        257,
        263,
        269,
        277,
        281,
        307,
        311,
        331,
        347,
        367,
        373,
        379,
        397,
        419,
        431,
        439,
        457,
        461,
        479,
        487,
        499,
        521,
        541,
        557,
        563,
        569,
        587,
        593,
        599,
        607,
        613,
        617,
        631,
        641,
        653,
        659,
        673,
        701,
        719,
        727,
        733,
        739,
        751,
        757,
        769,
        787,
        809,
        821,
        827,
        853,
        857,
        877,
        881,
        907,
        929,
        937,
        947,
        967,
        977,
        991,
      ].forEach((number) => {
        assert(Prime.isGoodWeak(number), `${number} is a weak good prime`);
      });
    });

    await t.step("validate non-prime numbers", () => {
      [1, 4, 6, 8, 9, 10, 15, 978, 999, 1000].forEach((number) => {
        assert(!Prime.isGood(number), `${number} is NOT a weak good prime`);
      });
    });
  });

  await t.step("static method list()", async (t) => {
    await t.step("returns the list of prime numbers", () => {
      assertEquals(Prime.list(10), [
        2,
        3,
        5,
        7,
      ]);
    });
  });
});