From 5dc94365a93a92b7945da7ef657344b42febb55d Mon Sep 17 00:00:00 2001
From: azjezz <azjezz@protonmail.com>
Date: Wed, 13 Nov 2019 21:39:27 +0100
Subject: [PATCH] add more null-safe operator tests

---
 Zend/tests/null-safe/foreach.phpt | 67 +++++++++++++++++++++++++++++++
 Zend/tests/null-safe/nested.phpt  | 28 +++++++++++++
 Zend/tests/null-safe/null.phpt    | 28 +++++++++++++
 3 files changed, 123 insertions(+)
 create mode 100644 Zend/tests/null-safe/foreach.phpt
 create mode 100644 Zend/tests/null-safe/nested.phpt
 create mode 100644 Zend/tests/null-safe/null.phpt

diff --git a/Zend/tests/null-safe/foreach.phpt b/Zend/tests/null-safe/foreach.phpt
new file mode 100644
index 0000000000000..ea8b897997cfa
--- /dev/null
+++ b/Zend/tests/null-safe/foreach.phpt
@@ -0,0 +1,67 @@
+--TEST--
+Usages of the nullsafe operator inside foreach loop
+--FILE--
+<?php
+
+function action(?Token $token = null): void {
+
+  foreach($token?->getUser()?->articles ?? [] as $article) {
+    printf('- %s%s', $article?->category ?? 'default', PHP_EOL);
+  }
+
+  printf('OK%s', PHP_EOL);
+}
+
+final class Token {
+  public ?User $user = null;
+
+  public function getUser(): ?User {
+    return $this->user;
+  }
+}
+
+final class User {
+  public ?array $articles = null;
+}
+
+final class Article {
+  public ?string $category;
+  public function __construct(?string $category) {
+    $this->category = $category;
+  }
+}
+
+action(null);
+action(new Token());
+action(new Token(new User()));
+
+$user = new User();
+$user->articles = [
+  new Article('Foo'),
+  new Article('Bar'),
+];
+
+$token = new Token();
+$token->user = $user;
+
+action($token);
+$user->article = [
+  new Article('Foo'),
+  new Article(null),
+  new Article('Bar'),
+]
+action($token);
+
+printf('-- DONE --');
+--EXPECTF--
+OK
+OK
+OK
+- Foo
+- Bar
+OK
+- Foo
+- default
+- Bar
+OK
+-- DONE --
diff --git a/Zend/tests/null-safe/nested.phpt b/Zend/tests/null-safe/nested.phpt
new file mode 100644
index 0000000000000..aa594ee2058c4
--- /dev/null
+++ b/Zend/tests/null-safe/nested.phpt
@@ -0,0 +1,28 @@
+--TEST--
+Deep nested usages of the nullsafe operator
+--FILE--
+<?php
+
+final class Foo {
+  public ?Bar $bar;
+
+  public function __construct(
+    ?Bar $bar
+  ) {
+    $this->bar = $bar;
+  }
+}
+
+final class Bar {
+  public ?Foo $foo = null;
+}
+
+$bar = new Bar();
+$foo = new Foo($bar);
+$bar->foo = $foo;
+
+assert($bar === $bar?->foo?->bar?->foo?->bar);
+
+echo 'OK';
+--EXPECTF--
+OK
diff --git a/Zend/tests/null-safe/null.phpt b/Zend/tests/null-safe/null.phpt
new file mode 100644
index 0000000000000..82cefde31865d
--- /dev/null
+++ b/Zend/tests/null-safe/null.phpt
@@ -0,0 +1,28 @@
+--TEST--
+usages of the nullsafe operator on null value
+--FILE--
+<?php
+
+function qux(): ?ArrayObject {
+  return null;
+}
+
+$null = null;
+
+$ret[] = $null?->foo();
+
+$ret[] = ($null)?->bar();
+
+$ret[] = (null)?->baz();
+
+$ret[] = ($baz ?? qux()?->bar ?? null)
+    ?->qux;
+
+foreach($ret as $_) {
+  var_dump($_);
+}
+--EXPECTF--
+NULL
+NULL
+NULL
+NULL