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test: refactor the code in test-dns-ipv4
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* remove the manual control for functions execution
* use common.mustCall to control the functions execution automatically
* use let and const instead of var
* use assert.strictEqual instead assert.equal

PR-URL: #10200
Reviewed-By: Italo A. Casas <me@italoacasas.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
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@edsadr @MylesBorins
edsadr authored and MylesBorins committed Jan 24, 2017
1 parent 5c835c5 commit e794c0c
Showing 1 changed file with 70 additions and 73 deletions.
143 changes: 70 additions & 73 deletions test/internet/test-dns-ipv4.js
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Original file line number Diff line number Diff line change
@@ -1,18 +1,16 @@
'use strict';
require('../common');
const common = require('../common');
const assert = require('assert');
const dns = require('dns');
const net = require('net');
const isIPv4 = net.isIPv4;

let expected = 0;
let completed = 0;
let running = false;
const queue = [];

function TEST(f) {
function next() {
var f = queue.shift();
const f = queue.shift();
if (f) {
running = true;
console.log(f.name);
Expand All @@ -22,11 +20,9 @@ function TEST(f) {

function done() {
running = false;
completed++;
process.nextTick(next);
}

expected++;
queue.push(f);

if (!running) {
Expand All @@ -39,149 +35,150 @@ function checkWrap(req) {
}

TEST(function test_resolve4(done) {
var req = dns.resolve4('www.google.com', function(err, ips) {
if (err) throw err;
const req = dns.resolve4('www.google.com',
common.mustCall((err, ips) => {
assert.ifError(err);

assert.ok(ips.length > 0);
assert.ok(ips.length > 0);

for (var i = 0; i < ips.length; i++) {
assert.ok(isIPv4(ips[i]));
}
for (let i = 0; i < ips.length; i++) {
assert.ok(isIPv4(ips[i]));
}

done();
});
done();
}));

checkWrap(req);
});

TEST(function test_reverse_ipv4(done) {
var req = dns.reverse('8.8.8.8', function(err, domains) {
if (err) throw err;
const req = dns.reverse('8.8.8.8',
common.mustCall((err, domains) => {
assert.ifError(err);

assert.ok(domains.length > 0);
assert.ok(domains.length > 0);

for (var i = 0; i < domains.length; i++) {
assert.ok(domains[i]);
assert.ok(typeof domains[i] === 'string');
}
for (let i = 0; i < domains.length; i++) {
assert.ok(domains[i]);
assert.ok(typeof domains[i] === 'string');
}

done();
});
done();
}));

checkWrap(req);
});

TEST(function test_lookup_ipv4_explicit(done) {
var req = dns.lookup('www.google.com', 4, function(err, ip, family) {
if (err) throw err;
assert.ok(net.isIPv4(ip));
assert.strictEqual(family, 4);
const req = dns.lookup('www.google.com', 4,
common.mustCall((err, ip, family) => {
assert.ifError(err);
assert.ok(net.isIPv4(ip));
assert.strictEqual(family, 4);

done();
});
done();
}));

checkWrap(req);
});

TEST(function test_lookup_ipv4_implicit(done) {
var req = dns.lookup('www.google.com', function(err, ip, family) {
if (err) throw err;
assert.ok(net.isIPv4(ip));
assert.strictEqual(family, 4);
const req = dns.lookup('www.google.com',
common.mustCall((err, ip, family) => {
assert.ifError(err);
assert.ok(net.isIPv4(ip));
assert.strictEqual(family, 4);

done();
});
done();
}));

checkWrap(req);
});

TEST(function test_lookup_ipv4_explicit_object(done) {
var req = dns.lookup('www.google.com', {
const req = dns.lookup('www.google.com', {
family: 4
}, function(err, ip, family) {
if (err) throw err;
}, common.mustCall((err, ip, family) => {
assert.ifError(err);
assert.ok(net.isIPv4(ip));
assert.strictEqual(family, 4);

done();
});
}));

checkWrap(req);
});

TEST(function test_lookup_ipv4_hint_addrconfig(done) {
var req = dns.lookup('www.google.com', {
const req = dns.lookup('www.google.com', {
hints: dns.ADDRCONFIG
}, function(err, ip, family) {
if (err) throw err;
}, common.mustCall((err, ip, family) => {
assert.ifError(err);
assert.ok(net.isIPv4(ip));
assert.strictEqual(family, 4);

done();
});
}));

checkWrap(req);
});

TEST(function test_lookup_ip_ipv4(done) {
var req = dns.lookup('127.0.0.1', function(err, ip, family) {
if (err) throw err;
assert.strictEqual(ip, '127.0.0.1');
assert.strictEqual(family, 4);
const req = dns.lookup('127.0.0.1',
common.mustCall((err, ip, family) => {
assert.ifError(err);
assert.strictEqual(ip, '127.0.0.1');
assert.strictEqual(family, 4);

done();
});
done();
}));

checkWrap(req);
});

TEST(function test_lookup_localhost_ipv4(done) {
var req = dns.lookup('localhost', 4, function(err, ip, family) {
if (err) throw err;
assert.strictEqual(ip, '127.0.0.1');
assert.strictEqual(family, 4);
const req = dns.lookup('localhost', 4,
common.mustCall((err, ip, family) => {
assert.ifError(err);
assert.strictEqual(ip, '127.0.0.1');
assert.strictEqual(family, 4);

done();
});
done();
}));

checkWrap(req);
});

TEST(function test_lookup_all_ipv4(done) {
var req = dns.lookup(
const req = dns.lookup(
'www.google.com',
{all: true, family: 4},
function(err, ips) {
if (err) throw err;
common.mustCall((err, ips) => {
assert.ifError(err);
assert.ok(Array.isArray(ips));
assert.ok(ips.length > 0);

ips.forEach(function(ip) {
ips.forEach((ip) => {
assert.ok(isIPv4(ip.address));
assert.strictEqual(ip.family, 4);
});

done();
}
);
));

checkWrap(req);
});

TEST(function test_lookupservice_ip_ipv4(done) {
var req = dns.lookupService('127.0.0.1', 80, function(err, host, service) {
if (err) throw err;
assert.equal(typeof host, 'string');
assert(host);
assert(['http', 'www', '80'].includes(service));
done();
});
const req = dns.lookupService('127.0.0.1', 80,
common.mustCall((err, host, service) => {
assert.ifError(err);
assert.strictEqual(typeof host, 'string');
assert(host);
assert(['http', 'www', '80'].includes(service));
done();
}));

checkWrap(req);
});

process.on('exit', function() {
console.log(completed + ' tests completed');
assert.equal(running, false);
assert.strictEqual(expected, completed);
});

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