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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-fs-readfile-pipe-large.js |
'use strict';
const common = require('../common');
// Simulate `cat readfile.js | node readfile.js`
if (common.isWindows || common.isAIX)
common.skip(`No /dev/stdin on ${process.platform}.`);
const assert = require('assert');
const path = require('path');
const fs = require('fs');
if (process.argv[2] === 'child') {
fs.readFile('/dev/stdin', function(er, data) {
assert.ifError(er);
process.stdout.write(data);
});
return;
}
const tmpdir = require('../common/tmpdir');
const filename = path.join(tmpdir.path, '/readfile_pipe_large_test.txt');
const dataExpected = 'a'.repeat(999999);
tmpdir.refresh();
fs.writeFileSync(filename, dataExpected);
const exec = require('child_process').exec;
const f = JSON.stringify(__filename);
const node = JSON.stringify(process.execPath);
const cmd = `cat ${filename} | ${node} ${f} child`;
exec(cmd, { maxBuffer: 1000000 }, common.mustSucceed((stdout, stderr) => {
assert.strictEqual(
stdout,
dataExpected,
`expect it reads the file and outputs 999999 'a' but got : ${stdout}`
);
assert.strictEqual(
stderr,
'',
`expect that it does not write to stderr, but got : ${stderr}`
);
console.log('ok');
}));
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