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