rusn/rusn.test.mjs

Small library without deps for getting russian text with singular and plural forms

import { assertEquals } from "https://deno.land/std@0.104.0/testing/asserts.ts";
import { rusPluralize } from "./rusn.mjs";

const Jars = ["банка", "банки", "банок"];
// deno-fmt-ignore
const firstFormNumbers = [
  1, 101, 201, 301, 401, 501, 601, 701, 801, 901,
  21, 31, 41, 51, 61, 71, 81, 91,
  121, 131, 141, 151, 161, 171, 181, 191,
]
// deno-fmt-ignore
const secondFormNumbers = [
  2, 3, 4,
  22, 23, 24,
  102, 103, 104,
]
// deno-fmt-ignore
const thirdFormNumbers = [
  5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
  25, 26, 27, 28, 29, 105, 106, 107, 108, 109, 110, 111,
  112, 113, 114, 115, 116, 117, 118, 119, 120,
]
const allNumbers = firstFormNumbers.concat(secondFormNumbers, thirdFormNumbers);

Deno.test("returns first form", () => {
  for (let number of firstFormNumbers) {
    assertEquals(rusPluralize(number, Jars), Jars[0]);
  }
});

Deno.test("returns second form", () => {
  for (let number of secondFormNumbers) {
    assertEquals(rusPluralize(number, Jars), Jars[1]);
  }
});

Deno.test("returns third form", () => {
  for (let number of thirdFormNumbers) {
    assertEquals(rusPluralize(number, Jars), Jars[2]);
  }
});

Deno.test("returns forms value if type of variable is string", () => {
  for (let number of allNumbers) {
    assertEquals(rusPluralize(number, Jars[0]), Jars[0]);
    assertEquals(rusPluralize(number, Jars[1]), Jars[1]);
    assertEquals(rusPluralize(number, Jars[2]), Jars[2]);
  }
});