mirror of https://github.com/nodejs/node.git
52 lines
1.2 KiB
JavaScript
52 lines
1.2 KiB
JavaScript
'use strict';
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const common = require('../common');
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const dc = require('diagnostics_channel');
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const assert = require('assert');
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const handler = common.mustNotCall();
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{
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const handlers = {
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start: common.mustNotCall()
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};
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const channel = dc.tracingChannel('test');
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assert.strictEqual(channel.hasSubscribers, false);
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channel.subscribe(handlers);
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assert.strictEqual(channel.hasSubscribers, true);
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channel.unsubscribe(handlers);
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assert.strictEqual(channel.hasSubscribers, false);
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channel.start.subscribe(handler);
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assert.strictEqual(channel.hasSubscribers, true);
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channel.start.unsubscribe(handler);
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assert.strictEqual(channel.hasSubscribers, false);
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}
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{
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const handlers = {
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asyncEnd: common.mustNotCall()
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};
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const channel = dc.tracingChannel('test');
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assert.strictEqual(channel.hasSubscribers, false);
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channel.subscribe(handlers);
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assert.strictEqual(channel.hasSubscribers, true);
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channel.unsubscribe(handlers);
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assert.strictEqual(channel.hasSubscribers, false);
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channel.asyncEnd.subscribe(handler);
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assert.strictEqual(channel.hasSubscribers, true);
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channel.asyncEnd.unsubscribe(handler);
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assert.strictEqual(channel.hasSubscribers, false);
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}
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