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denoland-deno/tests/node_compat/test/parallel/test-event-emitter-prepend.js
Matt Mastracci f5e46c9bf2
chore: move cli/tests/ -> tests/ (#22369)
This looks like a massive PR, but it's only a move from cli/tests ->
tests, and updates of relative paths for files.

This is the first step towards aggregate all of the integration test
files under tests/, which will lead to a set of integration tests that
can run without the CLI binary being built.

While we could leave these tests under `cli`, it would require us to
keep a more complex directory structure for the various test runners. In
addition, we have a lot of complexity to ignore various test files in
the `cli` project itself (cargo publish exclusion rules, autotests =
false, etc).

And finally, the `tests/` folder will eventually house the `test_ffi`,
`test_napi` and other testing code, reducing the size of the root repo
directory.

For easier review, the extremely large and noisy "move" is in the first
commit (with no changes -- just a move), while the remainder of the
changes to actual files is in the second commit.
2024-02-10 20:22:13 +00:00

50 lines
1.4 KiB
JavaScript

// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 16.13.0
// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';
const common = require('../common');
const EventEmitter = require('events');
const assert = require('assert');
const myEE = new EventEmitter();
let m = 0;
// This one comes last.
myEE.on('foo', common.mustCall(() => assert.strictEqual(m, 2)));
// This one comes second.
myEE.prependListener('foo', common.mustCall(() => assert.strictEqual(m++, 1)));
// This one comes first.
myEE.prependOnceListener('foo',
common.mustCall(() => assert.strictEqual(m++, 0)));
myEE.emit('foo');
// Test fallback if prependListener is undefined.
const stream = require('stream');
delete EventEmitter.prototype.prependListener;
function Writable() {
this.writable = true;
stream.Stream.call(this);
}
Object.setPrototypeOf(Writable.prototype, stream.Stream.prototype);
Object.setPrototypeOf(Writable, stream.Stream);
function Readable() {
this.readable = true;
stream.Stream.call(this);
}
Object.setPrototypeOf(Readable.prototype, stream.Stream.prototype);
Object.setPrototypeOf(Readable, stream.Stream);
// FIXME(bartlomieju):
// const w = new Writable();
// const r = new Readable();
// r.pipe(w);