add failing test

Author: spawnia

tests/Rules/UseSafeFunctionsRuleTest.php

@@ -44,4 +44,14 @@ public function testJSONEncodeNoCatchSafe(): void
     {
         $this->analyse([__DIR__ . '/data/safe_json_encode.php'], []);
     }
+
+    public function testFirstClassCallable(): void
+    {
+        $this->analyse([__DIR__ . '/data/first_class_callable.php'], [
+            [
+                "Function json_encode is unsafe to use. It can return FALSE instead of throwing an exception. Please add 'use function Safe\\json_encode;' at the beginning of the file to use the variant provided by the 'thecodingmachine/safe' library.",
+                3,
+            ],
+        ]);
+    }
 }

tests/Rules/data/first_class_callable.php

@@ -0,0 +1,4 @@
+<?php
+
+$encode = json_encode(...);
+$encode([]);

tests/Rules/data/safe_json_decode.php

@@ -13,6 +13,3 @@
 // Test named arguments instead of positional
 json_decode("{}", flags: JSON_THROW_ON_ERROR);
 json_decode("{}", flags: JSON_THROW_ON_ERROR);
-
-// Test first class callable
-json_decode(...);

tests/Rules/data/safe_json_encode.php

@@ -7,6 +7,3 @@
 
 // Named arguments
 json_encode([], flags: JSON_THROW_ON_ERROR);
-
-// First class callable
-json_encode(...);