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import PrefetchAndCache, {
shortKey,
} from "../../../../src/background/completion/impl/PrefetchAndCache";
import { expect } from "chai";
class MockRepository {
public history: string[] = [];
constructor(private items: string[]) {}
get(query: string): Promise<string[]> {
this.history.push(query);
if (query.length === 0) {
return Promise.resolve(this.items);
} else {
return Promise.resolve(this.items.filter((item) => item.includes(query)));
}
}
}
const filter = (items: string[], query: string) =>
query.length === 0 ? items : items.filter((item) => item.includes(query));
describe("shortKey", () => {
it("returns query excluding the last word", () => {
const query = "hello\t world good bye";
const shorten = shortKey(query);
expect(shorten).to.equal("hello world good");
});
it("returns half-length of the query", () => {
const query = "the-query-with-super-long-word";
const shorten = shortKey(query);
expect(shorten).to.equal("the-query-with-");
});
it("returns shorten URL", () => {
let query = "https://example.com/path/to/resource?q=hello";
let shorten = shortKey(query);
expect(shorten).to.equal("https://example.com/path/to/");
query = "https://example.com/path/to/resource/#id1";
shorten = shortKey(query);
expect(shorten).to.equal("https://example.com/path/to/");
query = "https://www.google.c";
shorten = shortKey(query);
expect(shorten).to.equal("https://ww");
});
});
describe("PrefetchAndCache", () => {
describe("get", () => {
it("returns cached request", async () => {
const repo = new MockRepository([
"apple",
"apple pie",
"apple juice",
"banana",
"banana pudding",
"cherry",
]);
const sut = new PrefetchAndCache(repo.get.bind(repo), filter);
expect(await sut.get("apple pie")).deep.equal(["apple pie"]);
expect(await sut.get("apple ")).deep.equal([
"apple",
"apple pie",
"apple juice",
]);
expect(await sut.get("apple")).deep.equal([
"apple",
"apple pie",
"apple juice",
]);
expect(await sut.get("appl")).deep.equal([
"apple",
"apple pie",
"apple juice",
]);
expect(repo.history).to.deep.equal(["apple", "ap"]);
expect(await sut.get("banana")).deep.equal(["banana", "banana pudding"]);
expect(repo.history).to.deep.equal(["apple", "ap", "ban"]);
expect(await sut.get("banana p")).deep.equal(["banana pudding"]);
expect(repo.history).to.deep.equal(["apple", "ap", "ban", "banana"]);
expect(await sut.get("ba")).deep.equal(["banana", "banana pudding"]);
expect(repo.history).to.deep.equal(["apple", "ap", "ban", "banana", "b"]);
expect(await sut.get("")).to.have.lengthOf(6);
expect(repo.history).to.deep.equal([
"apple",
"ap",
"ban",
"banana",
"b",
"",
]);
});
});
});
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