[3.0] Test for changing returning value by deferred code (#17)

.php_cs.dist

@@ -12,6 +12,7 @@
 $finder = PhpCsFixer\Finder::create()
     ->in(array('src', 'tests'))
     ->name(array('*.php', '*.phpt'))
+    ->notName(array('change_returned_value.phpt'))
 ;
 
 $header = <<<'HEADER'

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [3.0.4] - 2020-06-28
+
+Added test for changing returned value in defer.
+
 ## [3.0.3] - 2020-06-21
 
 Added tests for deferred exceptions.
@@ -18,6 +22,7 @@ Added additional unit test.
 Order of execution deferred functions has reversed (LIFO as in Golang).
 Given version is successor of version [1.0.0], to provide support for PHP ^5.3.
 
+[3.0.4]: https://github.com/php-defer/php-defer/compare/v3.0.3...v3.0.4
 [3.0.3]: https://github.com/php-defer/php-defer/compare/v3.0.2...v3.0.3
 [3.0.2]: https://github.com/php-defer/php-defer/compare/v3.0.1...v3.0.2
 [3.0.1]: https://github.com/php-defer/php-defer/compare/v3.0.0...v3.0.1

tests/phpt/change_returned_value.phpt

@@ -0,0 +1,29 @@
+--INI--
+track_errors=0
+--FILE--
+<?php
+
+// example in GO https://play.golang.org/p/8RGPPPQLgQu
+
+require \implode(\DIRECTORY_SEPARATOR, array(__DIR__, '..', '..', 'vendor', 'autoload.php'));
+
+/**
+ * Function must return value by reference.
+ */
+function &foo()
+{
+    // variable $result must be passed to anonymous function by reference
+    defer($_, function () use (&$result) {
+        $result = 'Change World';
+    });
+
+    $result = 'Hello World';
+
+    return $result;
+}
+
+echo foo();
+
+?>
+--EXPECT--
+Change World