chore: add tests for PHP 8.3 typed class constants

Author: czosel

tests/class/__snapshots__/jsfmt.spec.mjs.snap

@@ -1,4 +1,4 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
 
 exports[`anonymous.php 1`] = `
 ====================================options=====================================
@@ -918,6 +918,31 @@ readonly class ReadOnlyCls {
 
 class FinalCost { final public const FOO = 'foo'; }
 
+// PHP 8.3 typed class constants
+enum E {
+    const string TEST = "Test1";   // E::TEST is a string
+}
+
+trait T {
+    const string TEST = E::TEST;   // T::TEST is a string too
+}
+
+interface I {
+    const string TEST = E::TEST;   // I::TEST is a string as well
+}
+
+class Foo implements I {
+    use T;
+
+    const string TEST = E::TEST;  // Foo::TEST must also be a string
+}
+
+class Bar extends Foo {
+    const string TEST = "Test2";  // Bar::TEST must also be a string, but the value can change
+    public const int|null I = null;
+    public const ?int J = null;
+}
+
 =====================================output=====================================
 <?php
 
@@ -1368,5 +1393,35 @@ class FinalCost
     final public const FOO = "foo";
 }
 
+// PHP 8.3 typed class constants
+enum E
+{
+    const string TEST = "Test1"; // E::TEST is a string
+}
+
+trait T
+{
+    const string TEST = E::TEST; // T::TEST is a string too
+}
+
+interface I
+{
+    const string TEST = E::TEST; // I::TEST is a string as well
+}
+
+class Foo implements I
+{
+    use T;
+
+    const string TEST = E::TEST; // Foo::TEST must also be a string
+}
+
+class Bar extends Foo
+{
+    const string TEST = "Test2"; // Bar::TEST must also be a string, but the value can change
+    public const int|null I = null;
+    public const ?int J = null;
+}
+
 ================================================================================
 `;

tests/class/class.php

@@ -314,3 +314,28 @@ public function __construct(   public  int $a, private float $b, protected  stri
 }
 
 class FinalCost { final public const FOO = 'foo'; }
+
+// PHP 8.3 typed class constants
+enum E {
+    const string TEST = "Test1";   // E::TEST is a string
+}
+
+trait T {
+    const string TEST = E::TEST;   // T::TEST is a string too
+}
+
+interface I {
+    const string TEST = E::TEST;   // I::TEST is a string as well
+}
+
+class Foo implements I {
+    use T;
+
+    const string TEST = E::TEST;  // Foo::TEST must also be a string
+}
+
+class Bar extends Foo {
+    const string TEST = "Test2";  // Bar::TEST must also be a string, but the value can change
+    public const int|null I = null;
+    public const ?int J = null;
+}