make-plural-compiler/lib/tests.js

Translates Unicode CLDR pluralization rules to executable JavaScript

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.testCat = testCat;

function errorMsg(lc, n, type, msg) {
  const val = JSON.stringify(n);
  return `Locale ${lc} ${type} rule self-test failed for ${val} (${msg})`;
}

function testCond(lc, n, type, expResult, fn) {
  try {
    var r = fn(n, type === 'ordinal');
  } catch (error) {
    /* istanbul ignore next: should not happen unless CLDR data is broken */
    throw new Error(errorMsg(lc, n, type, error));
  }

  if (r !== expResult) {
    const res = JSON.stringify(r);
    const exp = JSON.stringify(expResult);
    throw new Error(errorMsg(lc, n, type, `was ${res}, expected ${exp}`));
  }
}

function testCat(lc, type, cat, values, fn) {
  for (const n of values) {
    testCond(lc, n, type, cat, fn);
    if (!/\.0+$/.test(n)) testCond(lc, Number(n), type, cat, fn);
  }
}