1 files changed, 35 insertions, 0 deletions
diff --git a/Zend/tests/stringable_automatic_implementation.phpt b/Zend/tests/stringable_automatic_implementation.phpt
new file mode 100644
index 0000000000..5c45c03acb
--- /dev/null
+++ b/Zend/tests/stringable_automatic_implementation.phpt
@@ -0,0 +1,35 @@
+--TEST--
+Stringable is automatically implemented
+--FILE--
+<?php
+
+class Test {
+    public function __toString() {
+        return "foo";
+    }
+}
+
+var_dump(new Test instanceof Stringable);
+var_dump((new ReflectionClass(Test::class))->getInterfaceNames());
+
+class Test2 extends Test {
+    public function __toString() {
+        return "bar";
+    }
+}
+
+var_dump(new Test2 instanceof Stringable);
+var_dump((new ReflectionClass(Test2::class))->getInterfaceNames());
+
+?>
+--EXPECT--
+bool(true)
+array(1) {
+  [0]=>
+  string(10) "Stringable"
+}
+bool(true)
+array(1) {
+  [0]=>
+  string(10) "Stringable"
+}