Make sure fixers from the repo are used to check own code (#952)

Author: kubawerlos

.dev-tools/composer.json

@@ -18,6 +18,7 @@
  },
  "autoload": {
  "psr-4": {
+ "PhpCsFixerCustomFixers\\": "../src",
  "PhpCsFixer\\": "../vendor/friendsofphp/php-cs-fixer/src"
  }
  },

.php-cs-fixer.php

@@ -12,6 +12,19 @@
 require_once __DIR__ . '/.dev-tools/vendor/autoload.php';
 require_once __DIR__ . '/vendor/autoload.php';
 
+// sanity check
+$expectedPath = realpath(__DIR__ . '/src/Fixers.php');
+$actualPath = (new ReflectionClass(PhpCsFixerCustomFixers\Fixers::class))->getFileName();
+if ($expectedPath !== $actualPath) {
+ printf(
+ 'Class %s must be loaded from "%s", but loaded from "%s"!' . PHP_EOL,
+ PhpCsFixerCustomFixers\Fixers::class,
+ $expectedPath,
+ $actualPath,
+ );
+ exit(1);
+}
+
 $rules = (new PhpCsFixerConfig\Rules\LibraryRules('PHP CS Fixer: custom fixers', 'Kuba Werłos', 2018))->getRules();
 
 $rules[PhpCsFixerCustomFixers\Fixer\NoSuperfluousConcatenationFixer::name()] = ['allow_preventing_trailing_spaces' => true];