Merge pull request #144 from SlvrEagle23/php74_compat

#143 -- Add isInitialized check for PHP 7.4 typed properties.

.travis.yml

@@ -10,6 +10,7 @@ php:
   - '7.1'
   - '7.2'
   - '7.3'
+  - '7.4'
   - nightly
 
 matrix:

fixtures/f009/TypedProperty.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types=1);
+
+namespace DeepCopy\f009;
+
+class TypedProperty
+{
+    public int $foo;
+}

src/DeepCopy/DeepCopy.php

@@ -237,6 +237,12 @@ function ($object) {
         }
 
         $property->setAccessible(true);
+
+        // Ignore uninitialized properties (for PHP >7.4)
+        if (method_exists($property, 'isInitialized') && !$property->isInitialized($object)) {
+            return;
+        }
+
         $propertyValue = $property->getValue($object);
 
         // Copy the property

tests/DeepCopyTest/DeepCopyTest.php

@@ -16,6 +16,7 @@
 use DeepCopy\f006;
 use DeepCopy\f007;
 use DeepCopy\f008;
+use DeepCopy\f009;
 use DeepCopy\Filter\KeepFilter;
 use DeepCopy\Filter\SetNullFilter;
 use DeepCopy\Matcher\PropertyNameMatcher;
@@ -434,6 +435,35 @@ public function test_it_can_prepend_filter()
         $this->assertNull($copy->getFoo());
     }
 
+    /**
+     * @ticket https://github.com/myclabs/DeepCopy/issues/143
+     * @requires PHP 7.4
+     */
+    public function test_it_clones_typed_properties()
+    {
+        $object = new f009\TypedProperty();
+        $object->foo = 123;
+
+        $deepCopy = new DeepCopy();
+        $copy = $deepCopy->copy($object);
+
+        $this->assertSame(123, $copy->foo);
+    }
+
+    /**
+     * @ticket https://github.com/myclabs/DeepCopy/issues/143
+     * @requires PHP 7.4
+     */
+    public function test_it_ignores_uninitialized_typed_properties()
+    {
+        $object = new f009\TypedProperty();
+
+        $deepCopy = new DeepCopy();
+        $copy = $deepCopy->copy($object);
+
+        $this->assertFalse(isset($copy->foo));
+    }
+
     private function assertEqualButNotSame($expected, $val)
     {
         $this->assertEquals($expected, $val);