PhpdocToReturnTypeFixer - tests against all tokens

Author: kubawerlos

src/Fixer/FunctionNotation/PhpdocToReturnTypeFixer.php

@@ -251,6 +251,12 @@ protected function applyFix(\SplFileInfo $file, Tokens $tokens)
                 continue;
             }
 
+            try {
+                Tokens::fromCode(sprintf('<?php function f():%s {}', $returnType));
+            } catch (\ParseError $e) {
+                continue;
+            }
+
             $this->fixFunctionDefinition($tokens, $startIndex, $isNullable, $returnType);
         }
     }

tests/Fixer/FunctionNotation/PhpdocToReturnTypeFixerTest.php

@@ -60,6 +60,12 @@ public function provideFixCases()
             'invalid class 2' => [
                 '<?php /** @return \\Foo\\\\Bar */ function my_foo() {}',
             ],
+            'invalid class 3' => [
+                '<?php /** @return Break */ function my_foo() {}',
+            ],
+            'invalid class 4' => [
+                '<?php /** @return __CLASS__ */ function my_foo() {}',
+            ],
             'blacklisted class methods' => [
                 '<?php