Add regression tests for current handling

Author: DanielEScherzer

Zend/tests/attributes/Attribute/Attribute_on_abstract.phpt

@@ -0,0 +1,12 @@
+--TEST--
+#[Attribute] on an abstract class
+--FILE--
+<?php
+
+#[Attribute]
+abstract class Demo {}
+
+echo "Done\n";
+?>
+--EXPECT--
+Done

Zend/tests/attributes/Attribute/Attribute_on_enum.phpt

@@ -0,0 +1,12 @@
+--TEST--
+#[Attribute] on an enum
+--FILE--
+<?php
+
+#[Attribute]
+enum Demo {}
+
+echo "Done\n";
+?>
+--EXPECT--
+Done

Zend/tests/attributes/Attribute/Attribute_on_interface.phpt

@@ -0,0 +1,12 @@
+--TEST--
+#[Attribute] on an interface
+--FILE--
+<?php
+
+#[Attribute]
+interface Demo {}
+
+echo "Done\n";
+?>
+--EXPECT--
+Done

Zend/tests/attributes/Attribute/Attribute_on_trait.phpt

@@ -0,0 +1,12 @@
+--TEST--
+#[Attribute] on a trait
+--FILE--
+<?php
+
+#[Attribute]
+trait Demo {}
+
+echo "Done\n";
+?>
+--EXPECT--
+Done