loro/loro-js/tests/basic.test.ts

import { describe, expect, it } from "vitest";
import {
  ContainerID,
  Loro,
  LoroList,
  LoroMap,
  setPanicHook,
} from "../src";

setPanicHook();

it("basic example", () => {
  const doc = new Loro();
  const list: LoroList = doc.getList("list");
  list.insert(0, "A");
  list.insert(1, "B");
  list.insert(2, "C");

  const map: LoroMap = doc.getMap("map");
  // map can only has string key
  map.set("key", "value");
  expect(doc.toJson()).toStrictEqual({
    list: ["A", "B", "C"],
    map: { key: "value" }
  });

  // delete 1 element at index 0
  list.delete(0, 2)
  expect(doc.toJson()).toStrictEqual({
    list: ["C"],
    map: { key: "value" }
  });

  // Insert a text container to the list
  const text = list.insertContainer(0, "Text");
  text.insert(0, "Hello");
  text.insert(0, "Hi! ")

  // delete 1 element at index 0
  expect(doc.toJson()).toStrictEqual({
    list: ["Hi! Hello", "C"],
    map: { key: "value" }
  });

  // Insert a list container to the map
  const list2 = map.setContainer("test", "List");
  list2.insert(0, 1);
  expect(doc.toJson()).toStrictEqual({
    list: ["Hi! Hello", "C"],
    map: { key: "value", test: [1] }
  });
})

it("basic sync example", () => {
  const docA = new Loro();
  const docB = new Loro();
  const listA: LoroList = docA.getList("list");
  listA.insert(0, "A");
  listA.insert(1, "B");
  listA.insert(2, "C");
  // B import the ops from A
  docB.import(docA.exportFrom());
  expect(docB.toJson()).toStrictEqual({
    list: ["A", "B", "C"]
  })

  const listB: LoroList = docB.getList("list");
  // delete 1 element at index 1
  listB.delete(1, 1);
  // A import the ops from B
  docA.import(docB.exportFrom(docA.version()))
  // list at A is now ["A", "C"], with the same state as B
  expect(docA.toJson()).toStrictEqual({
    list: ["A", "C"]
  });
  expect(docA.toJson()).toStrictEqual(docB.toJson());
})

it("basic events", () => {
  const doc = new Loro();
  doc.subscribe(event => {

  });
  const list = doc.getList("list");
})

describe("list", () => {
  it("insert containers", () => {
    const doc = new Loro();
    const list = doc.getList("list");
    const map = list.insertContainer(0, "Map");
    map.set("key", "value");
    const v = list.get(0);
    console.log(v);
    expect(typeof v).toBe("string");
    const m = doc.getMap(v as ContainerID);
    expect(m.getDeepValue()).toStrictEqual({ key: "value" });
  })

  it.todo("iterate");
})

describe("import", () => {
  it('pending', () => {
    const a = new Loro();
    a.getText("text").insert(0, "a");
    const b = new Loro();
    b.import(a.exportFrom());
    b.getText("text").insert(1, "b");
    const c = new Loro();
    c.import(b.exportFrom());
    c.getText("text").insert(2, "c");

    // c export from b's version, which cannot be imported directly to a. 
    // This operation is pending.
    a.import(c.exportFrom(b.version()))
    expect(a.getText("text").toString()).toBe("a");

    // a import the missing ops from b. It makes the pending operation from c valid.
    a.import(b.exportFrom(a.version()))
    expect(a.getText("text").toString()).toBe("abc");
  })
})