'use strict';

require('../common');

const commonPath = require.resolve('../common');

const assert = require('assert');

const initHooks = require('./init-hooks');

const { checkInvocations } = require('./hook-checks');

const fs = require('fs');

const hooks = initHooks();

hooks.enable();

function onchange() {}

// install first file watcher

fs.watchFile(__filename, onchange);

let as = hooks.activitiesOfTypes('STATWATCHER');

assert.strictEqual(as.length, 1);

const statwatcher1 = as[0];

assert.strictEqual(statwatcher1.type, 'STATWATCHER');

assert.strictEqual(typeof statwatcher1.uid, 'number');

assert.strictEqual(statwatcher1.triggerAsyncId, 1);

checkInvocations(statwatcher1, { init: 1 },

'watcher1: when started to watch file');

// install second file watcher

fs.watchFile(commonPath, onchange);

as = hooks.activitiesOfTypes('STATWATCHER');

assert.strictEqual(as.length, 2);

const statwatcher2 = as[1];

assert.strictEqual(statwatcher2.type, 'STATWATCHER');

assert.strictEqual(typeof statwatcher2.uid, 'number');

assert.strictEqual(statwatcher2.triggerAsyncId, 1);

checkInvocations(statwatcher1, { init: 1 },

'watcher1: when started to watch second file');

checkInvocations(statwatcher2, { init: 1 },

'watcher2: when started to watch second file');

// remove first file watcher

fs.unwatchFile(__filename);

checkInvocations(statwatcher1, { init: 1, before: 1, after: 1 },

'watcher1: when unwatched first file');

checkInvocations(statwatcher2, { init: 1 },

'watcher2: when unwatched first file');

// remove second file watcher

fs.unwatchFile(commonPath);

checkInvocations(statwatcher1, { init: 1, before: 1, after: 1 },

'watcher1: when unwatched second file');

checkInvocations(statwatcher2, { init: 1, before: 1, after: 1 },

'watcher2: when unwatched second file');

process.on('exit', onexit);

function onexit() {

hooks.disable();

hooks.sanityCheck('STATWATCHER');

checkInvocations(statwatcher1, { init: 1, before: 1, after: 1 },

'watcher1: when process exits');

checkInvocations(statwatcher2, { init: 1, before: 1, after: 1 },

'watcher2: when process exits');

}