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silverbullet/plugs/search/engine.test.ts
2023-08-30 21:12:33 +02:00

75 lines
2.1 KiB
TypeScript

import { assertEquals } from "../../test_deps.ts";
import { BatchKVStore, SimpleSearchEngine } from "./engine.ts";
class InMemoryBatchKVStore implements BatchKVStore {
private store = new Map<string, any>();
get(keys: string[]): Promise<(any | undefined)[]> {
const results: (any | undefined)[] = keys.map((key) => this.store.get(key));
return Promise.resolve(results);
}
queryPrefix(prefix: string): Promise<[string, any][]> {
const results: [string, any][] = [];
for (const [key, value] of this.store.entries()) {
if (key.startsWith(prefix)) {
results.push([key, value]);
}
}
return Promise.resolve(results);
}
set(entries: Map<string, any>): Promise<void> {
for (const [key, value] of entries) {
this.store.set(key, value);
}
return Promise.resolve();
}
delete(keys: string[]): Promise<void> {
for (const key of keys) {
this.store.delete(key);
}
return Promise.resolve();
}
}
Deno.test("Test full text search", async () => {
const engine = new SimpleSearchEngine(
new InMemoryBatchKVStore(),
new InMemoryBatchKVStore(),
);
await engine.indexDocument({ id: "1", text: "The quick brown fox" });
await engine.indexDocument({ id: "2", text: "jumps over the lazy dogs" });
await engine.indexDocument({
id: "3",
text: "Hello world, jumping jump jumps",
});
await engine.indexDocument({ id: "4", text: "TypeScript is awesome" });
await engine.indexDocument({ id: "5", text: "The brown dogs jumps zęf" });
console.log(engine.index);
const results = await engine.search("Brown fox");
console.log(results);
assertEquals(results.length, 2);
assertEquals(results[0].id, "1");
assertEquals(results[0].score, 2);
assertEquals(results[1].id, "5");
assertEquals(results[1].score, 1);
const results2 = await engine.search("jump");
console.log(results2);
assertEquals(results2.length, 3);
await engine.deleteDocument("3");
const results3 = await engine.search("jump");
console.log(results3);
assertEquals(results3.length, 2);
const results4 = await engine.search("zęf");
console.log(results4);
assertEquals(results4.length, 1);
});