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denoland-deno/cli/js/fs_events_test.ts
2020-02-24 15:48:35 -05:00

52 lines
1.5 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { testPerm, assert } from "./test_util.ts";
// TODO(ry) Add more tests to specify format.
testPerm({ read: false }, function fsEventsPermissions() {
let thrown = false;
try {
Deno.fsEvents(".");
} catch (err) {
assert(err instanceof Deno.errors.PermissionDenied);
thrown = true;
}
assert(thrown);
});
async function getTwoEvents(
iter: AsyncIterableIterator<Deno.FsEvent>
): Promise<Deno.FsEvent[]> {
const events = [];
for await (const event of iter) {
console.log(">>>> event", event);
events.push(event);
if (events.length > 2) break;
}
return events;
}
testPerm({ read: true, write: true }, async function fsEventsBasic(): Promise<
void
> {
const testDir = await Deno.makeTempDir();
const iter = Deno.fsEvents(testDir);
// Asynchornously capture two fs events.
const eventsPromise = getTwoEvents(iter);
// Make some random file system activity.
const file1 = testDir + "/file1.txt";
const file2 = testDir + "/file2.txt";
Deno.writeFileSync(file1, new Uint8Array([0, 1, 2]));
Deno.writeFileSync(file2, new Uint8Array([0, 1, 2]));
// We should have gotten two fs events.
const events = await eventsPromise;
console.log("events", events);
assert(events.length >= 2);
assert(events[0].kind == "create");
assert(events[0].paths[0].includes(testDir));
assert(events[1].kind == "create" || events[1].kind == "modify");
assert(events[1].paths[0].includes(testDir));
});