import { spawn } from 'child_process'
import t from '../../lib/eltro.mjs'
import assert from '../../lib/assert.mjs'
import kill from '../../lib/kill.mjs'

t.describe('kill', function() {
  let worker

  t.afterEach(function() {
    if (worker?.pid && !worker.killed) {
      worker.kill()
    }
  })

  t.test('should kill process correctly', function(done) {
    worker = spawn('node', ['./test/kill/runner.mjs'])
    assert.ok(worker.pid)

    worker.on('exit', done.finish(function(code, signal) {
      assert.ok(code || signal)
    }))

    kill(worker.pid)
  })

  t.test('should succeed in killing tree', async function() {
    worker = spawn('node', ['./test/kill/runner.mjs'])
    assert.ok(worker.pid)

    // Give it some time to start
    await new Promise(res => {
      worker.stdout.on('data', function(data) {
        if (data.toString().indexOf('secondary') >= 0) res()
      })
    })

    return kill(worker.pid).then(function(pids) {
      assert.strictEqual(pids.size, 2)
    })
  })
})