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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-child-process-spawn-args.js |
'use strict';
// This test confirms that `undefined`, `null`, and `[]`
// can be used as a placeholder for the second argument (`args`) of `spawn()`.
// Previously, there was a bug where using `undefined` for the second argument
// caused the third argument (`options`) to be ignored.
// See https://github.com/nodejs/node/issues/24912.
const common = require('../common');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const { spawn } = require('child_process');
tmpdir.refresh();
const command = common.isWindows ? 'cd' : 'pwd';
const options = { cwd: tmpdir.path };
if (common.isWindows) {
// This test is not the case for Windows based systems
// unless the `shell` options equals to `true`
options.shell = true;
}
const testCases = [
undefined,
null,
[],
];
const expectedResult = tmpdir.path.trim().toLowerCase();
(async () => {
const results = await Promise.all(
testCases.map((testCase) => {
return new Promise((resolve) => {
const subprocess = spawn(command, testCase, options);
let accumulatedData = Buffer.alloc(0);
subprocess.stdout.on('data', common.mustCall((data) => {
accumulatedData = Buffer.concat([accumulatedData, data]);
}));
subprocess.stdout.on('end', () => {
resolve(accumulatedData.toString().trim().toLowerCase());
});
});
})
);
assert.deepStrictEqual([...new Set(results)], [expectedResult]);
})().then(common.mustCall());
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