Add fix and tests

Author: VincentLanglet

SymfonyCustom/Sniffs/PHP/ImportInternalFunctionSniff.php

@@ -10,6 +10,7 @@
 
 use function array_filter;
 use function array_map;
+use function get_defined_functions;
 use function in_array;
 use function mb_strtolower;
 
@@ -93,22 +94,29 @@ private function processString(File $phpcsFile, int $stackPtr, array $functionUs
         }
 
         if (isset($ignore[$tokens[$prevToken]['code']])) {
-            // Not a call to a PHP function.
+            // Not a call to a function.
             return;
         }
 
         $nextToken = $phpcsFile->findNext(T_WHITESPACE, ($stackPtr + 1), null, true);
         if (isset($ignore[$tokens[$nextToken]['code']])) {
-            // Not a call to a PHP function.
+            // Not a call to a function.
             return;
         }
 
         if (T_STRING === $tokens[$stackPtr]['code'] && T_OPEN_PARENTHESIS !== $tokens[$nextToken]['code']) {
-            // Not a call to a PHP function.
+            // Not a call to a function.
             return;
         }
 
         $function = mb_strtolower($tokens[$stackPtr]['content']);
+
+        $internalFunctions = get_defined_functions()['internal'];
+        if (!in_array($function, $internalFunctions)) {
+            // Not a call to a PHP function.
+            return;
+        }
+
         if (!in_array($function, $functionUses)) {
             $phpcsFile->addError(
                 'PHP internal function "%s" must be imported',

SymfonyCustom/Tests/PHP/ImportInternalFunctionUnitTest.inc

@@ -0,0 +1,11 @@
+<?php
+
+namespace Bar;
+
+use function array_values;
+
+function my_function(array $array) {}
+
+my_function([]);
+array_values([]);
+array_unique([]);

SymfonyCustom/Tests/PHP/ImportInternalFunctionUnitTest.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SymfonyCustom\Tests\PHP;
+
+use PHP_CodeSniffer\Tests\Standards\AbstractSniffUnitTest;
+
+/**
+ * Unit test class for the ImportInternalFunction sniff.
+ */
+class ImportInternalFunctionUnitTest extends AbstractSniffUnitTest
+{
+    /**
+     * @return array<int, int>
+     */
+    protected function getErrorList(): array
+    {
+        return [
+            11 => 1,
+        ];
+    }
+
+    /**
+     * @return array<int, int>
+     */
+    protected function getWarningList(): array
+    {
+        return [];
+    }
+}