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'use strict';
// Tests the NODE_REDIRECT_WARNINGS environment variable by spawning
// a new child node process that emits a warning into a temporary
// warnings file. Once the process completes, the warning file is
// opened and the contents are validated
const common = require('../common');
const fs = require('fs');
const fork = require('child_process').fork;
const path = require('path');
const assert = require('assert');
common.refreshTmpDir();
const warnmod = require.resolve(common.fixturesDir + '/warnings.js');
const warnpath = path.join(common.tmpDir, 'warnings.txt');
fork(warnmod, {env: {NODE_REDIRECT_WARNINGS: warnpath}})
.on('exit', common.mustCall(() => {
fs.readFile(warnpath, 'utf8', common.mustCall((err, data) => {
assert.ifError(err);
assert(/\(node:\d+\) Warning: a bad practice warning/.test(data));
}));
}));