CustomHandlerTest - Code Metrics - Inspection of "Issue 96" - Badcow/DNS - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#97)

by Sam

created 2021-01-21 22:21 UTC

CustomHandlerTest A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	37
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	5

Importance

Changes

Metric	Value
wmc	3
lcom	0
cbo	5
dl	0
loc	37
rs	10
c	0
b	0
f	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	spfHandler()	0	14	2
A	testCustomHandler()	0	16	1

<?php

declare(strict_types=1);

/*
 * This file is part of Badcow DNS Library.
 *
 * (c) Samuel Williams <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Badcow\DNS\Tests\Parser;

use Badcow\DNS\Classes;
use Badcow\DNS\Parser\ParseException;
use Badcow\DNS\Parser\Parser;
use Badcow\DNS\Rdata\TXT;
use PHPUnit\Framework\TestCase;

class CustomHandlerTest extends TestCase
{
    public function spfHandler(\ArrayIterator $iterator): TXT
    {
        $string = '';
        while ($iterator->valid()) {
            $string .= $iterator->current().' ';
            $iterator->next();
        }
        $string = trim($string, ' "'); //Remove whitespace and quotes

        $spf = new TXT();
        $spf->setText($string);

        return $spf;
    }

    /**
     * @throws ParseException
     */
    public function testCustomHandler(): void
    {
        $customHandlers = ['SPF' => [$this, 'spfHandler']];

        $record = 'example.com. 7200 IN SPF "v=spf1 a mx ip4:69.64.153.131 include:_spf.google.com ~all"';
        $parser = new Parser($customHandlers);
        $zone = $parser->makeZone('example.com.', $record);
        $rr = $zone->getResourceRecords()[0];

        $this->assertEquals('TXT', $rr->getType());
        $this->assertEquals('example.com.', $rr->getName());
        $this->assertEquals(7200, $rr->getTtl());
        $this->assertEquals(Classes::INTERNET, $rr->getClass());
        $this->assertNotNull($rr->getRdata());
        $this->assertEquals('v=spf1 a mx ip4:69.64.153.131 include:_spf.google.com ~all', $rr->getRdata()->getText());
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			/*
6			* This file is part of Badcow DNS Library.
7			*
8			* (c) Samuel Williams <[email protected]>
9			*
10			* For the full copyright and license information, please view the LICENSE
11			* file that was distributed with this source code.
12			*/
13
14			namespace Badcow\DNS\Tests\Parser;
15
16			use Badcow\DNS\Classes;
17			use Badcow\DNS\Parser\ParseException;
18			use Badcow\DNS\Parser\Parser;
19			use Badcow\DNS\Rdata\TXT;
20			use PHPUnit\Framework\TestCase;
21
22			class CustomHandlerTest extends TestCase
23			{
24			public function spfHandler(\ArrayIterator $iterator): TXT
25			{
26			$string = '';
27			while ($iterator->valid()) {
28			$string .= $iterator->current().' ';
29			$iterator->next();
30			}
31			$string = trim($string, ' "'); //Remove whitespace and quotes
32
33			$spf = new TXT();
34			$spf->setText($string);
35
36			return $spf;
37			}
38
39			/**
40			* @throws ParseException
41			*/
42			public function testCustomHandler(): void
43			{
44			$customHandlers = ['SPF' => [$this, 'spfHandler']];
45
46			$record = 'example.com. 7200 IN SPF "v=spf1 a mx ip4:69.64.153.131 include:_spf.google.com ~all"';
47			$parser = new Parser($customHandlers);
48			$zone = $parser->makeZone('example.com.', $record);
49			$rr = $zone->getResourceRecords()[0];
50
51			$this->assertEquals('TXT', $rr->getType());
52			$this->assertEquals('example.com.', $rr->getName());
53			$this->assertEquals(7200, $rr->getTtl());
54			$this->assertEquals(Classes::INTERNET, $rr->getClass());
55			$this->assertNotNull($rr->getRdata());
56			$this->assertEquals('v=spf1 a mx ip4:69.64.153.131 include:_spf.google.com ~all', $rr->getRdata()->getText());
			0 ignored issues – show Bug introduced 2021-01-21 22:25 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `Badcow\DNS\Rdata\RdataInterface` as the method `getText()` does only exist in the following implementations of said interface: `Badcow\DNS\Rdata\SPF`, `Badcow\DNS\Rdata\TXT`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
57			}
58			}
59

Badcow / DNS

Pull Request — master (#97)

CustomHandlerTest A

Complexity

Size/Duplication

Coupling/Cohesion

Importance

2 Methods

Available Fixes

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