11cb0ef41Sopenharmony_ci'use strict'; 21cb0ef41Sopenharmony_ci// Flags: --expose-internals 31cb0ef41Sopenharmony_ciconst common = require('../common'); 41cb0ef41Sopenharmony_ciconst assert = require('assert'); 51cb0ef41Sopenharmony_ciconst { emitExperimentalWarning } = require('internal/util'); 61cb0ef41Sopenharmony_ci 71cb0ef41Sopenharmony_ci// This test ensures that the emitExperimentalWarning in internal/util emits a 81cb0ef41Sopenharmony_ci// warning when passed an unsupported feature and that it simply returns 91cb0ef41Sopenharmony_ci// when passed the same feature multiple times. 101cb0ef41Sopenharmony_ci 111cb0ef41Sopenharmony_ciprocess.on('warning', common.mustCall((warning) => { 121cb0ef41Sopenharmony_ci assert.match(warning.message, /is an experimental feature/); 131cb0ef41Sopenharmony_ci}, 2)); 141cb0ef41Sopenharmony_ci 151cb0ef41Sopenharmony_ciemitExperimentalWarning('feature1'); 161cb0ef41Sopenharmony_ciemitExperimentalWarning('feature1'); // should not warn 171cb0ef41Sopenharmony_ciemitExperimentalWarning('feature2'); 18