This kata doesn't appear to have any tests in JavaScript, so here's a testbed with both example tests and random tests:

const chai = require("chai");
const assert = require('chai').assert;

describe('Example tests', () => {
    it('should return "Java" when number is divisible by 3 (e.g., 9)', () => {
        assert.strictEqual(caffeineBuzz(9), "Java");
    });

    it('should return "CoffeeScript" when number is divisible by both 3 and 4 (e.g., 12)', () => {
        assert.strictEqual(caffeineBuzz(12), "CoffeeScript");
    });

    it('should return "mocha_missing!" when number is not divisible by 3 or 4 (e.g., 7)', () => {
        assert.strictEqual(caffeineBuzz(7), "mocha_missing!");
    });
});

describe('Random tests', () => {
    // Generate 20 random tests
    for(let i = 0; i < 20; i++) {
        // Random number between 1 and 100
        const n = Math.floor(Math.random() * 100) + 1;
        
        // Calculate expected result
        let expected = "mocha_missing!";
        
        if (n % 3 === 0 && n % 4 === 0) {
            expected = "Coffee";
        } else if (n % 3 === 0) {
            expected = "Java";
        }
        
        if ((n % 3 === 0) && (n % 2 === 0)) {
            expected += "Script";
        }
        
        // Run the test 
        it(`Testing for n = ${n}`, () => {
            assert.strictEqual(caffeineBuzz(n), expected);
        });
    }
});

Scala translation

C#: method name should be PascalCase (Please refer to implementation of backward compatibility here )

C#: method name should be PascalCase (Please refer to implementation of backward compatibility here )

I've improved the java tests including the addition of random tests if anyone wants to approve it: https://www.codewars.com/kumite/638f44ccbb8c010058658dc8?sel=638f44ccbb8c010058658dc8

Brainfuck translation if anyone is interested: https://www.codewars.com/kumite/638e1fe259b85d004a0f133f?sel=638e1fe259b85d004a0f133f

Ruby 3.0 should be enabled, check details here and here.

And if possible update the github list.

No random tests in

• C#
• Clojure

No sample tests and random tests in

• Coffeescript
• Java
• Javascript

C# random tests are failing with some weird input. I got the same input twice and expected result differs somehow. An example what is passed inside a method: "3135 5400 3656889".

Though some logs in console show "[3, 1, 3, 5, 5, 4, 0, 0, 3, 6, 5, 6]"

As much as three times the same input can be passed into a method, with two times passing and failing on a third time

Missing random tests in multiple languages (python, ruby, java, js, ...)

The C# version is almost always throwing an error every time when just returning false and running all tests. It appears to be some issue with the "Random Tests".

Random Tests: System.OutOfMemoryException : Out of memory
STDERR: Stack overflow in unmanaged: IP: 0x5d208c, fault addr: 0x7ff0b2bf9ff8

Code:
public class solution
{
public bool validate(string n)
{
return false;
}
}

The C# test cases (example and hidden ones) are wrong.
E.g. for the randomized "110 021 32667" it should return valid, but the test case expects invalid (check here: https://planetcalc.com/2464/)

Same for those example test cases...

The test cases also use the wrong C# order of parameters for AreEqual. And there are two that are exactly the same just pasted after one another..

This (or at least the C# version of it) is a very low effort kata :/ Whoever translated it: shame on you

I am a bit confused on submitting a solution using Test Driven Development.

I have used a list of credit card numbers from https://en.wikipedia.org/wiki/Luhn_algorithm, and have validated them with my code and they all pass accordingly.

Invalid: 79927398710, 79927398711, 79927398712, 79927398714, 79927398715, 79927398716, 79927398717, 79927398718, 79927398719
Valid: 79927398713

How can I go about implementing this in TDD form?

I currently have:
Test.assertEquals(validatecard("79927398713"), true);
Test.assertEquals(validatecard("79927398710"), false);