PHP 8 support (drops PHP 7.0/7.1)

.gitignore

@@ -1,2 +1,3 @@
 composer.lock
 /vendor/
+.phpunit*.cache

Tests/NullableEmbeddable/ClosureNullatorTest.php

@@ -21,7 +21,7 @@ final class ClosureNullatorTest extends TestCase
      */
     private $listener;
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->listener = NullableEmbeddableListenerFactory::createWithClosureNullator();
     }

Tests/NullableEmbeddable/NullableEmbeddableListenerTest.php

@@ -21,7 +21,7 @@ final class NullableEmbeddableListenerTest extends TestCase
      */
     private $listener;
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->listener = NullableEmbeddableListenerFactory::createWithPropertyAccessor();
     }

composer.json

@@ -14,10 +14,10 @@
 
     "minimum-stability": "stable",
     "require": {
-        "php": "^7.0",
-        "symfony/property-access": "^3.2|^4.0"
+        "php": "^7.2 || ^8.0",
+        "symfony/property-access": "^3.2 || ^4.0 || ^5.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7"
+        "phpunit/phpunit": "^8.5 || ^9.5"
     }
 }

phpunit.xml.dist

@@ -1,33 +1,32 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <!-- https://phpunit.de/documentation.html -->
 <phpunit
-        backupGlobals               = "false"
-        backupStaticAttributes      = "false"
-        colors                      = "true"
-        convertErrorsToExceptions   = "true"
-        convertNoticesToExceptions  = "true"
-        convertWarningsToExceptions = "true"
-        processIsolation            = "false"
-        stopOnFailure               = "true"
-        stopOnError                 = "true"
-        syntaxCheck                 = "false"
-        forceCoversAnnotation       = "true"
-        bootstrap                   = "./vendor/autoload.php">
-
-    <testsuites>
-        <testsuite>
-            <directory>./Tests</directory>
-        </testsuite>
-    </testsuites>
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.5/phpunit.xsd"
+    backupGlobals="false"
+    backupStaticAttributes="false"
+    colors="true"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    processIsolation="false"
+    stopOnFailure="true"
+    stopOnError="true"
+    forceCoversAnnotation="true"
+    bootstrap="./vendor/autoload.php">
+  <testsuites>
+    <testsuite name="default">
+      <directory>./Tests</directory>
+    </testsuite>
+  </testsuites>
 
-    <filter>
-        <whitelist>
-            <directory>.</directory>
-            <exclude>
-                <directory>./Tests</directory>
-                <directory suffix="Interface.php">./*</directory>
-            </exclude>
-        </whitelist>
-    </filter>
+  <filter>
+    <whitelist>
+      <directory>.</directory>
+      <exclude>
+        <directory>./Tests</directory>
+        <directory suffix="Interface.php">./*</directory>
+      </exclude>
+    </whitelist>
+  </filter>
 </phpunit>