Passed
Pull Request — master (#4)
by Arnold
01:57
created

ExpectedWarnings::describeExpected()   A

Complexity

Conditions 3
Paths 3

Size

Total Lines 9
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 3
CRAP Score 3

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 3
eloc 5
c 1
b 0
f 0
nc 3
nop 1
dl 0
loc 9
ccs 3
cts 3
cp 1
crap 3
rs 10
1
<?php
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declare(strict_types=1);
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namespace Jasny\PHPUnit\Util;
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/**
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 * Error handler for expected warnings and notices.
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 */
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final class ExpectedWarnings
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{
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    private const TYPES = [
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        \E_NOTICE => 'notice',
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        \E_USER_NOTICE => 'notice',
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        \E_STRICT => 'notice',
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        \E_WARNING => 'warning',
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        \E_USER_WARNING => 'warning',
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        \E_DEPRECATED => 'deprecation',
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        \E_USER_DEPRECATED => 'deprecation',
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    ];
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    /**
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     * @var bool
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     */
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    private $registered = false;
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    /**
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     * @var callable
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     */
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    private $oldErrorHandler;
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    /**
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     * @var array
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     */
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    private $expected = [];
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    /**
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     * Destructor. Automatically unregister.
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     */
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    public function __destruct()
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    {
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        $this->unregister();
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    }
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    /**
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     * Add an expected error.
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     */
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    public function add(string $type, string $message = ''): void
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    {
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        $this->expected[] = ['type' => $type, 'message' => $message, 'triggered' => false];
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    }
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    /**
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     * Add an expected error with regexp message.
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     */
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    public function addRegExp(string $type, string $regexp): void
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    {
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        $this->expected[] = ['type' => $type, 'regexp' => $regexp, 'triggered' => false];
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    }
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    /**
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     * Check if all expected error matches given error.
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     */
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    private function expectedMatches(array $expected, string $type, string $message): bool
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    {
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        if ($expected['type'] !== $type || $expected['triggered']) {
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            return false;
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        }
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        return isset($expected['message']) // either 'message' or 'regexp' is set
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            ? ($expected['message'] === '' || strpos($expected['message'], $message) !== false)
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            : (bool)preg_match($expected['regexp'], $message);
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    }
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    /**
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     * Mark an error as triggered.
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     * Returns false if there's no expected error that matches.
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     */
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    private function markTriggered(string $type, string $message): bool
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    {
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        foreach ($this->expected as &$expected) {
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            if ($this->expectedMatches($expected, $type, $message)) {
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                $expected['triggered'] = true;
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * Get all expected errors that weren't triggered.
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     */
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    public function getNotTriggered(): array
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    {
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        return array_filter($this->expected, function (array $expected): bool {
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            return !$expected['triggered'];
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        });
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    }
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    /**
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     * Invoke the error handler.
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     */
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    public function __invoke(int $errorNumber, string $errorString, string $errorFile, int $errorLine): ?bool
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    {
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        if (isset(self::TYPES[$errorNumber]) && $this->markTriggered(self::TYPES[$errorNumber], $errorString)) {
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            return true;
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        }
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        return ($this->oldErrorHandler)($errorNumber, $errorString, $errorFile, $errorLine);
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    }
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    /**
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     * Register as error handler.
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     */
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    public function register(): void
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    {
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        if ($this->registered) {
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            return; // @codeCoverageIgnore
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        }
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        $this->oldErrorHandler = \set_error_handler($this);
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        $this->registered = true;
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    }
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    /**
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     * Restore old error handler.
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     */
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    public function unregister(): void
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    {
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        if (!$this->registered) {
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            return; // @codeCoverageIgnore
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        }
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        \restore_error_handler();
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        $this->registered = false;
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        unset($this->oldErrorHandler);
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    }
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    /**
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     * @internal
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     */
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    public static function describeExpected(array $expected): string
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    {
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        if (isset($expected['regexp'])) {
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            return \sprintf('%s with message matching "%s"', $expected['type'], $expected['regexp']);
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        }
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        return $expected['message'] === ''
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            ? $expected['type']
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            : \sprintf('%s with message "%s"', $expected['type'], $expected['message']);
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    }
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}
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