mmpSearch/node_modules/process-warning/test/emit-once-only.test.js

34 lines
773 B
JavaScript

'use strict'
const { test } = require('node:test')
const { createWarning } = require('..')
const { withResolvers } = require('./promise')
test('emit should emit a given code only once', t => {
t.plan(4)
const { promise, resolve } = withResolvers()
process.on('warning', onWarning)
function onWarning (warning) {
t.assert.deepStrictEqual(warning.name, 'TestDeprecation')
t.assert.deepStrictEqual(warning.code, 'CODE')
t.assert.deepStrictEqual(warning.message, 'Hello world')
t.assert.ok(warn.emitted)
}
const warn = createWarning({
name: 'TestDeprecation',
code: 'CODE',
message: 'Hello world'
})
warn()
warn()
setImmediate(() => {
process.removeListener('warning', onWarning)
resolve()
})
return promise
})