refactor: more tests, and test cleanup

Author: NickSdot

Zend/tests/property_hooks/readonly_class_property_backed.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Backed property, readonly class
+Backed property in readonly class may have hooks
 --FILE--
 <?php
 

Zend/tests/property_hooks/readonly_class_property_backed_inheritance_1.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Backed property cannot redeclare readonly as non-readonly property
+Non-readonly class cannot extend readonly class
 --FILE--
 <?php
 

Zend/tests/property_hooks/readonly_class_property_backed_inheritance_2.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Backed property cannot redeclare non-readonly as readonly property
+Readonly class cannot extend non-readonly class
 --FILE--
 <?php
 

Zend/tests/property_hooks/readonly_class_property_backed_promoted.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Backed property, promoted, readonly class
+Backed promoted property in readonly class may have hooks
 --FILE--
 <?php
 

Zend/tests/property_hooks/readonly_property_backed_inheritance_3.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Backed property cannot redeclare readonly as non-readonly property
+Backed readonly property get() in child class behaves as expected
 --FILE--
 <?php
 
@@ -53,14 +53,12 @@ try {
     echo $e->getMessage(), "\n";
 }
 
-
 try {
     $t->prop = 43; // cannot write, visibility
 } catch (Error $e) {
     echo $e->getMessage(), "\n";
 }
 
-
 ?>
 --EXPECT--
 First call:

Zend/tests/property_hooks/readonly_property_backed_trait_1.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Backed property cannot redeclare readonly as non-readonly property
+Readonly class Test cannot use trait with a non-readonly property
 --FILE--
 <?php
 

Zend/tests/property_hooks/readonly_property_virtual_in_abstract.phpt

@@ -0,0 +1,11 @@
+--TEST--
+Virtual readonly property in interface throws
+--FILE--
+<?php
+
+abstract class Test {
+    public readonly int $prop { get; }
+}
+?>
+--EXPECTF--
+Fatal error: Hooked virtual properties cannot be readonly in %s on line %d

Zend/tests/property_hooks/readonly_property_virtual.phpt renamed to Zend/tests/property_hooks/readonly_property_virtual_in_class.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Virtual readonly property cannot have hooks
+Virtual readonly property in class throws
 --FILE--
 <?php
 

Zend/tests/property_hooks/readonly_property_virtual_in_interface.phpt

@@ -0,0 +1,11 @@
+--TEST--
+Virtual readonly property in interface throws
+--FILE--
+<?php
+
+interface Test {
+    public readonly int $prop { get; }
+}
+?>
+--EXPECTF--
+Fatal error: Hooked virtual properties cannot be readonly in %s on line %d