diff --git a/rules-tests/DeadCode/Rector/Expression/RemoveDeadStmtRectorFixture/void-return-functions-with-side-effects.php.inc b/rules-tests/DeadCode/Rector/Expression/RemoveDeadStmtRectorFixture/void-return-functions-with-side-effects.php.inc
new file mode 100644
index 00000000000..f22e5bc6576
--- /dev/null
+++ b/rules-tests/DeadCode/Rector/Expression/RemoveDeadStmtRectorFixture/void-return-functions-with-side-effects.php.inc
@@ -0,0 +1,9 @@
+<?php
+
+is_string('foo')
+    |> assert(...);
+
+sprintf('echo "%s"', 'foo')
+    |> passthru(...);
+
+?>