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silverbullet/webapp/spaces/sync.test.ts

124 lines
3.5 KiB
TypeScript

import { expect, test } from "@jest/globals";
import { IndexedDBSpace } from "./indexeddb_space";
import { SpaceSync } from "./sync";
import { PageMeta } from "../../common/types";
import { WatchableSpace } from "./cache_space";
// For testing in node.js
require("fake-indexeddb/auto");
test("Test store", async () => {
let primary = new WatchableSpace(new IndexedDBSpace("primary"), true);
let secondary = new WatchableSpace(
new IndexedDBSpace("secondary", -5000),
true
);
let sync = new SpaceSync(primary, secondary, 0, 0, "_trash/");
async function conflictResolver(pageMeta1: PageMeta, pageMeta2: PageMeta) {}
// Write one page to primary
await primary.writePage("start", "Hello");
expect((await secondary.listPages()).size).toBe(0);
await syncPages(conflictResolver);
expect((await secondary.listPages()).size).toBe(1);
expect((await secondary.readPage("start")).text).toBe("Hello");
// Should be a no-op
expect(await syncPages()).toBe(0);
// Now let's make a change on the secondary
await secondary.writePage("start", "Hello!!");
await secondary.writePage("test", "Test page");
// And sync it
await syncPages();
expect(primary.listPages().size).toBe(2);
expect(secondary.listPages().size).toBe(2);
expect((await primary.readPage("start")).text).toBe("Hello!!");
// Let's make some random edits on both ends
await primary.writePage("start", "1");
await primary.writePage("start2", "2");
await secondary.writePage("start3", "3");
await secondary.writePage("start4", "4");
await syncPages();
expect((await primary.listPages()).size).toBe(5);
expect((await secondary.listPages()).size).toBe(5);
expect(await syncPages()).toBe(0);
console.log("Deleting pages");
// Delete some pages
await primary.deletePage("start");
await primary.deletePage("start3");
console.log("Pages", await primary.listPages());
console.log("Trash", await primary.listTrash());
await syncPages();
expect((await primary.listPages()).size).toBe(3);
expect((await secondary.listPages()).size).toBe(3);
// No-op
expect(await syncPages()).toBe(0);
await secondary.deletePage("start4");
await primary.deletePage("start2");
await syncPages();
// Just "test" left
expect((await primary.listPages()).size).toBe(1);
expect((await secondary.listPages()).size).toBe(1);
// No-op
expect(await syncPages()).toBe(0);
await secondary.writePage("start", "I'm back");
await syncPages();
expect((await primary.readPage("start")).text).toBe("I'm back");
// Cause a conflict
await primary.writePage("start", "Hello 1");
await secondary.writePage("start", "Hello 2");
await syncPages(SpaceSync.primaryConflictResolver(primary, secondary));
// Sync conflicting copy back
await syncPages();
// Verify that primary won
expect((await primary.readPage("start")).text).toBe("Hello 1");
expect((await secondary.readPage("start")).text).toBe("Hello 1");
// test + start + start.conflicting copy
expect((await primary.listPages()).size).toBe(3);
expect((await secondary.listPages()).size).toBe(3);
async function syncPages(
conflictResolver?: (
pageMeta1: PageMeta,
pageMeta2: PageMeta
) => Promise<void>
): Promise<number> {
// Awesome practice: adding sleeps to fix issues!
await sleep(2);
let n = await sync.syncPages(conflictResolver);
await sleep(2);
return n;
}
});
function sleep(ms: number = 5): Promise<void> {
return new Promise((resolve) => {
setTimeout(resolve, ms);
});
}