test.js

import test from 'ava';
import syllables from './index.js';

test('Counts syllables in a word', t => {
    const count = syllables('hello');
    t.is(count, 2);
});

test('Counts syllables in a word with uppercase', t => {
    const count = syllables('Hello');
    t.is(count, 2);
});

test('Counts syllables in a sentence', t => {
    const count = syllables('Hi, how are you?');
    t.is(count, 4);
});

test('Handles non-dictionary words', t => {
    const count = syllables('Notawordinthedictionary');
    t.is(count, 0);
});

test('Handles made-up words', t => {
    const count = syllables('A made up word oapissjoa');
    t.is(count, 4);
});

test('Handles empty string', t => {
    const count = syllables('');
    t.is(count, 0);
});

test('Handles symbols and numbers', t => {
    const count = syllables('Symbols ,    ! *1@981 9');
    t.is(count, 2);
});

test('Counts syllables with contractions and apostrophes', t => {
    const count = syllables("i'm i isn't very cool");
    t.is(count, 7);
});

test('Handles made-up words with a fallback function', t => {
    const count = syllables('A made up word oapissjoa', { fallbackSyllablesFunction: () => 10 });
    t.is(count, 14);
});

test('Handles made-up words with a fallback function that uses the word as input', t => {
    t.is(syllables('yyy', { fallbackSyllablesFunction: (word) => word.length }), 3);
    t.is(syllables('yyy yyyy', { fallbackSyllablesFunction: (word) => word.length }), 7);
    t.is(syllables('yyy yyyy yyyyy', { fallbackSyllablesFunction: (word) => word.length }), 12);
    t.is(syllables("What's an abcd?", { fallbackSyllablesFunction: (word) => word.length }), 6);
});

test('Fallback function returns non number', t => {
    t.is(syllables('yyy', { fallbackSyllablesFunction: () => 'hi' }), 0);
});