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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { unitTest, assert } from "./test_util.ts";
// TODO(ry) Add more tests to specify format.
unitTest({ perms: { read: false } }, function watchFsPermissions() {
let thrown = false;
try {
Deno.watchFs(".");
} catch (err) {
assert(err instanceof Deno.errors.PermissionDenied);
thrown = true;
}
assert(thrown);
});
unitTest({ perms: { read: true } }, function watchFsInvalidPath() {
let thrown = false;
try {
Deno.watchFs("non-existant.file");
} catch (err) {
console.error(err);
if (Deno.build.os === "windows") {
assert(
err.message.includes(
"Input watch path is neither a file nor a directory"
)
);
} else {
assert(err instanceof Deno.errors.NotFound);
}
thrown = true;
}
assert(thrown);
});
async function getTwoEvents(
iter: AsyncIterableIterator<Deno.FsEvent>
): Promise<Deno.FsEvent[]> {
const events = [];
for await (const event of iter) {
events.push(event);
if (events.length > 2) break;
}
return events;
}
unitTest(
{ perms: { read: true, write: true } },
async function watchFsBasic(): Promise<void> {
const testDir = await Deno.makeTempDir();
const iter = Deno.watchFs(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;
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));
}
);
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