// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

'use strict';

// tslint:disable:no-any max-func-body-length no-invalid-this max-classes-per-file

import { expect } from 'chai';

import { spawn } from 'child_process';

import { ProcessService } from '../../../client/common/process/proc';

import { createDeferred } from '../../../client/common/utils/async';

import { PYTHON_PATH } from '../../common';

suite('Process - Process Service', function () {

// tslint:disable-next-line:no-invalid-this

this.timeout(5000);

let procIdsToKill: number[] = [];

teardown(() => {

// tslint:disable-next-line:no-require-imports

const killProcessTree = require('tree-kill');

procIdsToKill.forEach(pid => {

try {

killProcessTree(pid);

} catch {

// Ignore.

}

});

procIdsToKill = [];

});

function spawnProc() {

const proc = spawn(PYTHON_PATH, ['-c', 'while(True): import time;time.sleep(0.5);print(1)']);

const exited = createDeferred<Boolean>();

proc.on('exit', () => exited.resolve(true));

procIdsToKill.push(proc.pid);

return { pid: proc.pid, exited: exited.promise };

}

test('Process is killed', async () => {

const proc = spawnProc();

ProcessService.kill(proc.pid);

expect(await proc.exited).to.equal(true, 'process did not die');

});

test('Process is alive', async () => {

const proc = spawnProc();

expect(ProcessService.isAlive(proc.pid)).to.equal(true, 'process is not alive');

});

});