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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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