What is the best way to incorporate a random test case on Codewars?

Question

What is the best way to incorporate a random test case on Codewars?

I have a function on codewars.com called getNumberLength(n). This function takes a number with different digits and should return the length of the number. For example, for the number n=2000, the function should return 4. I have already added some test cases using the Test.assertEquals() method, but now I need to add a test case with random numbers. Can anyone help me figure out how to do this on codewars? I couldn't find any explanation in their documentation on how to create random test cases. They have their own methods for test cases, so experienced users, please lend a hand! Just to provide some context, the function is written in JavaScript.

javascript random testcase

Answer 1

Answer №1

To generate random numbers, I recommend using a function similar to the one described in this source. You can then implement it like so:

function generateRandom(min,max) {
  return Math.floor(Math.random()*(max-min+1)+min);
};

Test.assertEquals(getNumberLength(generateRandom(1, 100)), 3)
Test.assertEquals(getNumberLength(generateRandom(1, 1000)), 4)
Test.assertEquals(getNumberLength(generateRandom(1, 10000)), 5)
Test.assertEquals(getNumberLength(generateRandom(1, 100000)), 6)

Answer 2

To generate random numbers, I recommend using a function similar to the one described in this source. You can then implement it like so:

function generateRandom(min,max) {
  return Math.floor(Math.random()*(max-min+1)+min);
};

Test.assertEquals(getNumberLength(generateRandom(1, 100)), 3)
Test.assertEquals(getNumberLength(generateRandom(1, 1000)), 4)
Test.assertEquals(getNumberLength(generateRandom(1, 10000)), 5)
Test.assertEquals(getNumberLength(generateRandom(1, 100000)), 6)

Answer 3

Answer №2

Here is how my algorithm performs when tested with random numbers:

Test.describe("Random Tests:", function() {
  function solution(d) {
    if (d<3) return d*40;
    return (d<7) ? d*40-20 : d*40-50;  
  }
  for (let i = 0; i < 100; i++) {
    let days = ~~(Math.random() * 100) + 1;
    Test.assertEquals(rentalCarCost(days), solution(days));
  }
});

I believe this example provides valuable insight into the functionality of my Kata.

Answer 4

Here is how my algorithm performs when tested with random numbers:

Test.describe("Random Tests:", function() {
  function solution(d) {
    if (d<3) return d*40;
    return (d<7) ? d*40-20 : d*40-50;  
  }
  for (let i = 0; i < 100; i++) {
    let days = ~~(Math.random() * 100) + 1;
    Test.assertEquals(rentalCarCost(days), solution(days));
  }
});

I believe this example provides valuable insight into the functionality of my Kata.

What is the best way to incorporate a random test case on Codewars?

Answer №1

Answer №2

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