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test: improve code coverage of diagnostics_channel
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test: improve code coverage of diagnostics_channel
PR-URL: #50053
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
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MrJithil authored Oct 19, 2023
1 parent c016397 commit a8af24b
Showing 1 changed file with 39 additions and 0 deletions.
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'use strict';

require('../common');
const dc = require('diagnostics_channel');
const assert = require('assert');

let channel;

// tracingChannel creating with name
channel = dc.tracingChannel('test');
assert.strictEqual(channel.start.name, 'tracing:test:start');

// tracingChannel creating with channels
channel = dc.tracingChannel({
start: dc.channel('tracing:test:start'),
end: dc.channel('tracing:test:end'),
asyncStart: dc.channel('tracing:test:asyncStart'),
asyncEnd: dc.channel('tracing:test:asyncEnd'),
error: dc.channel('tracing:test:error'),
});

// tracingChannel creating without nameOrChannels must throw TypeError
assert.throws(() => (channel = dc.tracingChannel(0)), {
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message:
/The "nameOrChannels" argument must be of type string or an instance of Channel or Object/,
});

// tracingChannel creating without instance of Channel must throw error
assert.throws(() => (channel = dc.tracingChannel({ start: '' })), {
code: 'ERR_INVALID_ARG_TYPE',
message: /The "nameOrChannels\.start" property must be an instance of Channel/,
});

// tracingChannel creating with empty nameOrChannels must throw error
assert.throws(() => (channel = dc.tracingChannel({})), {
message: /Cannot convert undefined or null to object/,
});

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