mirror of
https://github.com/denoland/deno.git
synced 2024-12-25 08:39:09 -05:00
53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
// deno-fmt-ignore-file
|
|
// deno-lint-ignore-file
|
|
|
|
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
|
|
// Taken from Node 18.12.1
|
|
// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
|
|
|
|
'use strict';
|
|
|
|
const common = require('../common');
|
|
const dc = require('diagnostics_channel');
|
|
const assert = require('assert');
|
|
const { Channel } = dc;
|
|
|
|
const input = {
|
|
foo: 'bar'
|
|
};
|
|
|
|
// Should not have named channel
|
|
assert.ok(!dc.hasSubscribers('test'));
|
|
|
|
// Individual channel objects can be created to avoid future lookups
|
|
const channel = dc.channel('test');
|
|
assert.ok(channel instanceof Channel);
|
|
|
|
// No subscribers yet, should not publish
|
|
assert.ok(!channel.hasSubscribers);
|
|
|
|
const subscriber = common.mustCall((message, name) => {
|
|
assert.strictEqual(name, channel.name);
|
|
assert.deepStrictEqual(message, input);
|
|
});
|
|
|
|
// Now there's a subscriber, should publish
|
|
channel.subscribe(subscriber);
|
|
assert.ok(channel.hasSubscribers);
|
|
|
|
// The ActiveChannel prototype swap should not fail instanceof
|
|
assert.ok(channel instanceof Channel);
|
|
|
|
// Should trigger the subscriber once
|
|
channel.publish(input);
|
|
|
|
// Should not publish after subscriber is unsubscribed
|
|
assert.ok(channel.unsubscribe(subscriber));
|
|
assert.ok(!channel.hasSubscribers);
|
|
|
|
// unsubscribe() should return false when subscriber is not found
|
|
assert.ok(!channel.unsubscribe(subscriber));
|
|
|
|
assert.throws(() => {
|
|
channel.subscribe(null);
|
|
}, { code: 'ERR_INVALID_ARG_TYPE' });
|