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<?php

declare(strict_types=1);

namespace Tests\Unit;

use PHPUnit\Framework\TestCase;

/**

* Bug #10 – memory_limit must NOT be hardcoded in source.

*

* DBDiff previously called ini_set('memory_limit', '512M') unconditionally,

* overriding both php.ini and any CLI -d flag. After the fix, the source

* file should contain zero calls to ini_set('memory_limit', …).

*/

class MemoryLimitTest extends TestCase

{

public function testDbDiffPhpDoesNotSetMemoryLimit(): void

{

$source = file_get_contents(__DIR__ . '/../../src/DBDiff.php');

$this->assertNotFalse($source);

// Ensure no ini_set('memory_limit', ...) anywhere in the file

$this->assertDoesNotMatchRegularExpression(

'/ini_set\s*\(\s*[\'"]memory_limit[\'"]\s*,/',

$source,

'DBDiff.php must not hardcode memory_limit via ini_set()'

);

}

public function testMemoryLimitUnchangedAfterRequiringDbDiff(): void

{

// Set a known memory_limit before loading DBDiff

$original = ini_get('memory_limit');

// Simply requiring/autoloading the class should not change the limit

// (class is already autoloaded by PHPUnit, so this is a sanity check)

$this->assertTrue(class_exists(\DBDiff\DBDiff::class));

$this->assertSame(

$original,

ini_get('memory_limit'),

'Loading/autoloading DBDiff must not change memory_limit'

);

}

}