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'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
function runChecks(err, stdio, streamName, expected) {
assert.strictEqual(err.message, `${streamName} maxBuffer length exceeded`);
assert(err instanceof RangeError);
assert.strictEqual(err.code, 'ERR_CHILD_PROCESS_STDIO_MAXBUFFER');
assert.deepStrictEqual(stdio[streamName], expected);
}
{
const cmd = `"${process.execPath}" -e "console.log('hello world');"`;
const options = { maxBuffer: Infinity };
cp.exec(cmd, options, common.mustCall((err, stdout, stderr) => {
assert.ifError(err);
assert.strictEqual(stdout.trim(), 'hello world');
assert.strictEqual(stderr, '');
}));
}
{
const cmd = 'echo hello world';
cp.exec(
cmd,
{ maxBuffer: 5 },
common.mustCall((err, stdout, stderr) => {
runChecks(err, { stdout, stderr }, 'stdout', 'hello');
})
);
}
const unicode = '中文测试'; // length = 4, byte length = 12
{
const cmd = `"${process.execPath}" -e "console.log('${unicode}');"`;
cp.exec(
cmd,
{ maxBuffer: 10 },
common.mustCall((err, stdout, stderr) => {
runChecks(err, { stdout, stderr }, 'stdout', '中文测试\n');
})
);
}
{
const cmd = `"${process.execPath}" -e "console.error('${unicode}');"`;
cp.exec(
cmd,
{ maxBuffer: 3 },
common.mustCall((err, stdout, stderr) => {
runChecks(err, { stdout, stderr }, 'stderr', '中文测');
})
);
}
{
const cmd = `"${process.execPath}" -e "console.log('${unicode}');"`;
const child = cp.exec(
cmd,
{ encoding: null, maxBuffer: 10 },
common.mustCall((err, stdout, stderr) => {
runChecks(err, { stdout, stderr }, 'stdout', '中文测试\n');
})
);
child.stdout.setEncoding('utf-8');
}
{
const cmd = `"${process.execPath}" -e "console.error('${unicode}');"`;
const child = cp.exec(
cmd,
{ encoding: null, maxBuffer: 3 },
common.mustCall((err, stdout, stderr) => {
runChecks(err, { stdout, stderr }, 'stderr', '中文测');
})
);
child.stderr.setEncoding('utf-8');
}
{
const cmd = `"${process.execPath}" -e "console.error('${unicode}');"`;
cp.exec(
cmd,
{ encoding: null, maxBuffer: 5 },
common.mustCall((err, stdout, stderr) => {
const buf = Buffer.from(unicode).slice(0, 5);
runChecks(err, { stdout, stderr }, 'stderr', buf);
})
);
}
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