Test repeating attributes

Zend/tests/attributes/constants/not_repeatable-internal.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Validation of attribute repetition (not allowed; internal attribute)
+--FILE--
+<?php
+
+#[Deprecated]
+#[Deprecated]
+const MY_CONST = true;
+
+?>
+--EXPECTF--
+Fatal error: Attribute "Deprecated" must not be repeated in %s on line %d

Zend/tests/attributes/constants/not_repeatable-userland.phpt

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+--TEST--
+Validation of attribute repetition (not allowed; userland attribute)
+--FILE--
+<?php
+
+#[Attribute]
+class MyAttribute {}
+
+#[MyAttribute]
+#[MyAttribute]
+const MY_CONST = true;
+
+$attributes = new ReflectionConstant( 'MY_CONST' )->getAttributes();
+var_dump( $attributes );
+$attributes[0]->newInstance();
+
+?>
+--EXPECTF--
+array(2) {
+  [0]=>
+  object(ReflectionAttribute)#%d (1) {
+    ["name"]=>
+    string(11) "MyAttribute"
+  }
+  [1]=>
+  object(ReflectionAttribute)#%d (1) {
+    ["name"]=>
+    string(11) "MyAttribute"
+  }
+}
+
+Fatal error: Uncaught Error: Attribute "MyAttribute" must not be repeated in %s:%d
+Stack trace:
+#0 %s(%d): ReflectionAttribute->newInstance()
+#1 {main}
+  thrown in %s on line %d

Zend/tests/attributes/constants/yes_repeatable-internal.phpt

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+--TEST--
+Validation of attribute repetition (is allowed; internal attribute)
+--EXTENSIONS--
+zend_test
+--FILE--
+<?php
+
+#[ZendTestRepeatableAttribute]
+#[ZendTestRepeatableAttribute]
+const MY_CONST = true;
+
+echo "Done\n";
+
+?>
+--EXPECT--
+Done

Zend/tests/attributes/constants/yes_repeatable-userland.phpt

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+--TEST--
+Validation of attribute repetition (is allowed; userland attribute)
+--FILE--
+<?php
+
+#[Attribute(Attribute::TARGET_ALL|Attribute::IS_REPEATABLE)]
+class MyAttribute {}
+
+#[MyAttribute]
+#[MyAttribute]
+const MY_CONST = true;
+
+$attributes = new ReflectionConstant( 'MY_CONST' )->getAttributes();
+var_dump( $attributes );
+$attributes[0]->newInstance();
+
+?>
+--EXPECTF--
+array(2) {
+  [0]=>
+  object(ReflectionAttribute)#%d (1) {
+    ["name"]=>
+    string(11) "MyAttribute"
+  }
+  [1]=>
+  object(ReflectionAttribute)#%d (1) {
+    ["name"]=>
+    string(11) "MyAttribute"
+  }
+}