Test functions for javascript:

// TODO: Add your tests here
// Starting from Node 10.x, [Mocha](https://mochajs.org) is used instead of our custom test framework.
// [Codewars' assertion methods](https://github.com/Codewars/codewars.com/wiki/Codewars-JavaScript-Test-Framework)
// are still available for now.
//
// For new tests, using [Chai](https://chaijs.com/) is recommended.
// You can use it by requiring:
//     const assert = require("chai").assert;
// If the failure output for deep equality is truncated, `chai.config.truncateThreshold` can be adjusted.

describe("Solution", () => {
  it("should test for something", () => {
    Test.assertDeepEquals(anagrams("abba", ["aabb", "abcd", "bbaa", "dada"]), [
      "aabb",
      "bbaa",
    ]);
  });

  it("should test for something", () => {
    Test.assertDeepEquals(
      anagrams("racer", ["crazer", "carer", "racar", "caers", "racer"]),
      ["carer", "racer"]
    );
  });

  it("should test for something", () => {
    Test.assertDeepEquals(anagrams("laser", ["lazing", "lazy", "lacer"]), []);
  });
});

In early days TDD was seen as a good practice. Only with years the absence of sample tests became an example of bad kata design.

Can someone send the tests? Please

There are no JavaScript example test cases written for this, and in the "attempt" test cases I am not being shown what's being tested. I had to write my own tests to make sure my preliminary attempts worked before checking the final result, which was a good exercise in writing tests, but I'm not sure that's what the purpose of this site is for.