handle yield from

Author: SpacePossum

src/Fixer/FunctionNotation/VoidReturnFixer.php

@@ -200,7 +200,7 @@ private function hasVoidReturn(Tokens $tokens, $startIndex, $endIndex)
                 continue;
             }
 
-            if ($tokens[$i]->isGivenKind(T_YIELD)) {
+            if ($tokens[$i]->isGivenKind([T_YIELD, T_YIELD_FROM])) {
                 return false; // Generators cannot return void.
             }
 

tests/Fixer/FunctionNotation/VoidReturnFixerTest.php

@@ -45,6 +45,7 @@ public function provideFixCases()
             ['<?php function foo($param) { return null; }'],
             ['<?php function foo($param) { yield; }'],
             ['<?php function foo($param) { yield $param; }'],
+            ['<?php function foo($param) { yield from test(); }'],
             ['<?php function foo($param): Void {}'],
             ['<?php interface Test { public function foo($param); }'],
             ['<?php function foo($param) { return function($a) use ($param): string {}; }'],