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'use strict';
const common = require('../common');
const assert = require('assert');
const { ChildProcess } = require('child_process');
assert.strictEqual(typeof ChildProcess, 'function');
function typeName(value) {
return typeof value;
}
{
// Verify that invalid options to spawn() throw.
const child = new ChildProcess();
[undefined, null, 'foo', 0, 1, NaN, true, false].forEach((options) => {
common.expectsError(() => {
child.spawn(options);
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "options" argument must be of type Object. ' +
`Received type ${typeName(options)}`
});
});
}
{
// Verify that spawn throws if file is not a string.
const child = new ChildProcess();
[undefined, null, 0, 1, NaN, true, false, {}].forEach((file) => {
common.expectsError(() => {
child.spawn({ file });
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "options.file" property must be of type string. ' +
`Received type ${typeName(file)}`
});
});
}
{
// Verify that spawn throws if envPairs is not an array or undefined.
const child = new ChildProcess();
[null, 0, 1, NaN, true, false, {}, 'foo'].forEach((envPairs) => {
common.expectsError(() => {
child.spawn({ envPairs, stdio: ['ignore', 'ignore', 'ignore', 'ipc'] });
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "options.envPairs" property must be of type Array. ' +
`Received type ${typeName(envPairs)}`
});
});
}
{
// Verify that spawn throws if args is not an array or undefined.
const child = new ChildProcess();
[null, 0, 1, NaN, true, false, {}, 'foo'].forEach((args) => {
common.expectsError(() => {
child.spawn({ file: 'foo', args });
}, {
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "options.args" property must be of type Array. ' +
`Received type ${typeName(args)}`
});
});
}
// Test that we can call spawn
const child = new ChildProcess();
child.spawn({
file: process.execPath,
args: ['--interactive'],
cwd: process.cwd(),
stdio: 'pipe'
});
assert.strictEqual(child.hasOwnProperty('pid'), true);
assert(Number.isInteger(child.pid));
// Try killing with invalid signal
common.expectsError(
() => { child.kill('foo'); },
{ code: 'ERR_UNKNOWN_SIGNAL', type: TypeError }
);
assert.strictEqual(child.kill(), true);