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// Copyright Node.js contributors. All rights reserved. MIT License.
import finished from "./end_of_stream.ts";
import Readable from "./readable.ts";
import Transform from "./transform.ts";
import Writable from "./writable.ts";
import { mustCall } from "../_utils.ts";
import { assert, fail } from "../../testing/asserts.ts";
import { deferred, delay } from "../../async/mod.ts";
Deno.test("Finished appends to Readable correctly", async () => {
const rs = new Readable({
read() {},
});
const [finishedExecution, finishedCb] = mustCall((err) => {
assert(!err);
});
finished(rs, finishedCb);
rs.push(null);
rs.resume();
await finishedExecution;
});
Deno.test("Finished appends to Writable correctly", async () => {
const ws = new Writable({
write(_data, _enc, cb) {
cb();
},
});
const [finishedExecution, finishedCb] = mustCall((err) => {
assert(!err);
});
finished(ws, finishedCb);
ws.end();
await finishedExecution;
});
Deno.test("Finished appends to Transform correctly", async () => {
const tr = new Transform({
transform(_data, _enc, cb) {
cb();
},
});
let finish = false;
let ended = false;
tr.on("end", () => {
ended = true;
});
tr.on("finish", () => {
finish = true;
});
const [finishedExecution, finishedCb] = mustCall((err) => {
assert(!err);
assert(finish);
assert(ended);
});
finished(tr, finishedCb);
tr.end();
tr.resume();
await finishedExecution;
});
Deno.test("The function returned by Finished clears the listeners", async () => {
const finishedExecution = deferred();
const ws = new Writable({
write(_data, _env, cb) {
cb();
},
});
const removeListener = finished(ws, () => {
finishedExecution.reject();
});
removeListener();
ws.end();
await Promise.race([
delay(100),
finishedExecution,
])
.catch(() => fail("Finished was executed"));
});
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