'use strict';

import assert from 'assert';

import { ethers } from "ethers";
import { loadTests, TestCase } from "@ethersproject/testcases";


function checkWordlist(content: string, wordlist: ethers.Wordlist): void {
    let words = content.split('\n');
    it('matches wordlists for ' + wordlist.locale, function() {
        for (let i = 0; i < 2048; i++) {
            let actual = wordlist.getWord(i);
            let expected = words[i];
            assert.equal(actual, expected, 'failed to match word ' + i + ': ' + words[i] + ' !=' + wordlist.getWord(i));
        }
    });

    it ("splitting and joining are equivalent", function() {
        const words: Array<string> = [ ];
        for (let i = 0; i < 12; i++) {
            words.push(wordlist.getWord(i));
        }

        const phrase = wordlist.join(words);

        const words2 = wordlist.split(phrase);
        const phrase2 = wordlist.join(words2);

        assert.deepStrictEqual(words2, words, "split words");
        assert.deepStrictEqual(phrase2, phrase, "re-joined words");
    });
}

describe('Check Wordlists', function() {
    let tests: Array<TestCase.Wordlist> = loadTests("wordlists");
    tests.forEach((test) => {
        let wordlist = (<{ [ locale: string ]: ethers.Wordlist }>(ethers.wordlists))[test.locale];
        if (wordlist == null) { return; }
        checkWordlist(test.content, wordlist);
    });
});