Restore CV

Author: arnaud-lb

Zend/tests/context_managers/using_restores_cv_001.phpt

@@ -0,0 +1,38 @@
+--TEST--
+using() restores CV
+--FILE--
+<?php
+
+require 'basic_manager.inc';
+
+class A {}
+
+$value = new A;
+$value2 = $value;
+
+echo "# \$value before using():\n";
+var_dump($value);
+
+using (new Manager() as $value) {
+    echo "# \$value in using():\n";
+    var_dump($value);
+}
+
+echo "# \$value after using():\n";
+var_dump($value);
+var_dump($value === $value2);
+
+?>
+--EXPECTF--
+# $value before using():
+object(A)#%d (0) {
+}
+Manager::enterContext()
+# $value in using():
+object(stdClass)#%d (0) {
+}
+Manager::exitContext(null)
+# $value after using():
+object(A)#%d (0) {
+}
+bool(true)

Zend/tests/context_managers/using_restores_cv_002.phpt

@@ -0,0 +1,24 @@
+--TEST--
+using() restores CV iff it was set
+--FILE--
+<?php
+
+require 'basic_manager.inc';
+
+using (new Manager() as $value) {
+    var_dump($value);
+}
+
+echo "\$value is set after using():\n";
+var_dump(isset($value));
+var_dump(array_key_exists('value', get_defined_vars()));
+
+?>
+--EXPECTF--
+Manager::enterContext()
+object(stdClass)#%d (0) {
+}
+Manager::exitContext(null)
+$value is set after using():
+bool(false)
+bool(false)

Zend/tests/context_managers/using_restores_cv_003.phpt

@@ -0,0 +1,44 @@
+--TEST--
+using() restores CV and preserves references
+--FILE--
+<?php
+
+require 'basic_manager.inc';
+
+class A {}
+class B {}
+
+$value = new A;
+$value2 = &$value;
+
+echo "# \$value before using():\n";
+var_dump($value);
+
+using (new Manager() as $value) {
+    echo "# \$value in using():\n";
+    var_dump($value);
+    $value = null;
+}
+
+echo "# \$value after using():\n";
+var_dump($value);
+$value = new B;
+
+echo "# \$value2 references \$value:\n";
+var_dump($value2 === $value);
+
+?>
+--EXPECTF--
+# $value before using():
+object(A)#%d (0) {
+}
+Manager::enterContext()
+# $value in using():
+object(stdClass)#%d (0) {
+}
+Manager::exitContext(null)
+# $value after using():
+object(A)#%d (0) {
+}
+# $value2 references $value:
+bool(true)