readonly subclass must also be declared readonly

Signed-off-by: Nathanael Esayeas <nathanael.esayeas@protonmail.com>

fixtures/PHP82/Subclass/ReadonlySubclassMustAlsoBeDeclaredReadonlyChildInvalid.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Mockery\Tests\Fixtures\PHP82\Subclass;
+
+/**
+ * @see https://php.watch/versions/8.2/readonly-classes#subclass-readonly
+ */
+readonly class ReadonlySubclassMustAlsoBeDeclaredReadonlyChildInvalid extends ReadonlySubclassMustAlsoBeDeclaredReadonlyParentInvalid
+{
+}

fixtures/PHP82/Subclass/ReadonlySubclassMustAlsoBeDeclaredReadonlyChildValid.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Mockery\Tests\Fixtures\PHP82\Subclass;
+
+/**
+ * @see https://php.watch/versions/8.2/readonly-classes#subclass-readonly
+ */
+readonly class ReadonlySubclassMustAlsoBeDeclaredReadonlyChildValid extends ReadonlySubclassMustAlsoBeDeclaredReadonlyParentValid
+{
+}

fixtures/PHP82/Subclass/ReadonlySubclassMustAlsoBeDeclaredReadonlyParentInvalid.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Mockery\Tests\Fixtures\PHP82\Subclass;
+
+/**
+ * @see https://php.watch/versions/8.2/readonly-classes#subclass-readonly
+ */
+readonly class ReadonlySubclassMustAlsoBeDeclaredReadonlyParentInvalid
+{
+}

fixtures/PHP82/Subclass/ReadonlySubclassMustAlsoBeDeclaredReadonlyParentValid.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Mockery\Tests\Fixtures\PHP82\Subclass;
+
+/**
+ * @see https://php.watch/versions/8.2/readonly-classes#subclass-readonly
+ */
+readonly class ReadonlySubclassMustAlsoBeDeclaredReadonlyParentValid
+{
+}

tests/Unit/PHP82/Php82LanguageFeaturesTest.php

@@ -5,6 +5,8 @@
 use Generator;
 use Mockery\Adapter\Phpunit\MockeryTestCase;
 use Mockery\Reflector;
+use Mockery\Tests\Fixtures\PHP82\Subclass\ReadonlySubclassMustAlsoBeDeclaredReadonlyChildInvalid;
+use Mockery\Tests\Fixtures\PHP82\Subclass\ReadonlySubclassMustAlsoBeDeclaredReadonlyChildValid;
 use Mockery\Tests\Fixtures\PHP82\ReadOnlyClass;
 use Mockery\Tests\Fixtures\PHP82\ReadOnlyClassAbstract;
 use Mockery\Tests\Fixtures\PHP82\ReadOnlyClassFinal;
@@ -148,6 +150,14 @@ public function testMockUser(): void
     {
         self::assertSame(User::class, mock(User::class));
     }
+    public function testReadonlySubclassMustAlsoBeDeclaredReadonlyInvalid(): void
+    {
+        self::assertSame(ReadonlySubclassMustAlsoBeDeclaredReadonlyChildInvalid::class, mock(ReadonlySubclassMustAlsoBeDeclaredReadonlyChildInvalid::class));
+    }
+    public function testReadonlySubclassMustAlsoBeDeclaredReadonlyValid(): void
+    {
+        self::assertSame(ReadonlySubclassMustAlsoBeDeclaredReadonlyChildValid::class, mock(ReadonlySubclassMustAlsoBeDeclaredReadonlyChildValid::class));
+    }
 
     public function testMockReadonlyClassesMustNotUseAllowDynamicPropertiesAttribute(): void
     {