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import { expect } from "chai";
import HintKeyProducer from '../../src/content/hint-key-producer';
describe('HintKeyProducer class', () => {
describe('#constructor', () => {
it('throws an exception on empty charset', () => {
expect(() => new HintKeyProducer([])).to.throw(TypeError);
});
});
describe('#produce', () => {
it('produce incremented keys', () => {
let charset = 'abc';
let sequences = [
'a', 'b', 'c',
'aa', 'ab', 'ac', 'ba', 'bb', 'bc', 'ca', 'cb', 'cc',
'aaa', 'aab', 'aac', 'aba']
let producer = new HintKeyProducer(charset);
for (let i = 0; i < sequences.length; ++i) {
expect(producer.produce()).to.equal(sequences[i]);
}
});
});
});