test.js

const assert = require("assert");
const zeros = require("./src/index.js");

it("should calculate the number of zeros 1", () => {
  assert.equal(zeros("5!"), 1);
});

it("should calculate the number of zeros 3", () => {
  assert.equal(zeros("9!!*10!!*7!!"), 3);
});

it("should calculate the number of zeros 11", () => {
  assert.equal(zeros("90!!*10!!"), 11);
});

it("should calculate the number of zeros 7", () => {
  assert.equal(zeros("1!*2!*3!*4!*5!*6!*7!*8!*9!*10!"), 7);
});

it("should calculate the number of zeros 4", () => {
  assert.equal(zeros("1!!*2!!*3!!*4!!*5!!*6!!*7!!*8!!*9!!*10!!"), 4);
});

it("should calculate the number of zeros 1", () => {
  assert.equal(
    zeros(
      "1!!*2!!*3!!*4!!*5!!*6!!*7!!*8!!*9!!*10!!*1!!*2!!*3!!*4!!*5!!*6!!*7!!*8!!*9!!*10!!"
    ),
    8
  );
});

it("should calculate the number of zeros 6", () => {
  assert.equal(zeros("10!!*20!!*30!!"), 6);
});

it("should calculate the number of zeros 7", () => {
  assert.equal(zeros("11!!*22!!*33!!"), 7);
});

it("should calculate the number of zeros 0", () => {
  assert.equal(zeros("55!!*77!!*99!!"), 0);
});

it("should calculate the number of zeros 0", () => {
  assert.equal(
    zeros("55!!*77!!*99!!*55!!*77!!*99!!*55!!*77!!*99!!*55!!*77!!*99!!"),
    0
  );
});

it("should calculate the number of zeros 36", () => {
  assert.equal(zeros("100!*100!!"), 36);
});

it("should calculate the number of zeros 70", () => {
  assert.equal(zeros("99!*99!!*100!*100!!"), 70);
});

it("should calculate the number of zeros 18", () => {
  assert.equal(zeros("23!*24!!*25!*26!!*27!!"), 18);
});

it("should calculate the number of zeros 24", () => {
  assert.equal(zeros("45!*63!"), 24);
});

it("should calculate the number of zeros 30", () => {
  assert.equal(zeros("45!*63!*28!"), 30);
});

it("should calculate the number of zeros 1", () => {
  assert.equal(zeros("45!*63!*28!*55!!"), 37);
});

it("should calculate the number of zeros 48", () => {
  assert.equal(zeros("45!*63!*28!*55!!*35!!*45!!"), 48);
});

it("should calculate the number of zeros 66", () => {
  assert.equal(zeros("45!*63!*28!*55!!*35!!*45!!*25!!*65!!*50!!"), 66);
});

it("should calculate the number of zeros 82", () => {
  assert.equal(
    zeros("45!*63!*28!*55!!*35!!*45!!*25!!*65!!*50!!*40!!*95!!"),
    82
  );
});

it("should calculate the number of zeros 88", () => {
  assert.equal(
    zeros("45!*63!*28!*55!!*35!!*45!!*25!!*65!!*50!!*40!!*95!!*25!"),
    88
  );
});

it("should calculate the number of zeros 125", () => {
  assert.equal(
    zeros(
      "45!*63!*28!*55!!*35!!*45!!*25!!*65!!*50!!*40!!*95!!*25!*45!*63!*28!*55!!"
    ),
    125
  );
});

it("should calculate the number of zeros 93", () => {
  assert.equal(
    zeros(
      "45!*5!*63!*5!*28!*5!*55!!*5!*35!!*5!*45!!*5!*25!!*5!*65!!*5!*50!!*5!*40!!*5!*95!!*5!"
    ),
    93
  );
});