spiegel-keyman/developer/js/tests/test-parse-wordlist.ts

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import {parseWordList, parseWordListFromFilename} from '../dist/lexical-model-compiler/build-trie';
import {assert} from 'chai';
import 'mocha';
import { makePathToFixture } from './helpers';
const BOM = '\ufeff';
const SENCOTEN_WORDLIST = [
['TŦE', 13644],
['E', 9134],
['SEN', 4816],
['Ȼ', 3479],
['SW̱', 2621],
['NIȽ', 2314],
['U¸', 2298],
['I¸', 1988],
['ȻSE', 1925],
['I', 1884]
];
describe('parseWordList', function () {
it('should remove the UTF-8 byte order mark from files', function () {
let word = 'hello';
let count = 1;
let expected = [
[word, count]
];
let file = `# this is a comment\n${word}\t${count}`;
let withoutBOM = parseWordList(file);
assert.deepEqual(withoutBOM, expected, "expected regular file to parse properly");
let withBOM = parseWordList(`${BOM}${file}`)
assert.deepEqual(withBOM, expected, "expected BOM to be ignored");
});
it('should read word lists in UTF-8', function () {
// N.B.: this is the format exported by Google Drive when selecting "TSV".
const filename = makePathToFixture('example.qaa.sencoten', 'wordlist.tsv');
let wordlist = parseWordListFromFilename(filename);
assert.deepEqual(wordlist, SENCOTEN_WORDLIST);
});
it('should read word lists in UTF-16 little-endian (with BOM)', function () {
// N.B.: this is the format exported by MS Excel when selecting
// "UTF-16" text (tested on Excel for macOS).
const filename = makePathToFixture('example.qaa.utf16le', 'wordlist.txt');
let wordlist = parseWordListFromFilename(filename);
assert.deepEqual(wordlist, SENCOTEN_WORDLIST);
});
it('should NOT read word lists in UTF-16 big-endian (with BOM)', function () {
// N.B.: Does anything output this format...?
const filename = makePathToFixture('example.qaa.utf16be', 'wordlist.txt');
assert.throws(() => {
parseWordListFromFilename(filename);
}, 'UTF-16BE is unsupported');
});
});