test with php 8

.travis.yml

@@ -5,6 +5,7 @@ php:
   - 7.2
   - 7.3
   - 7.4
+  - 8.0
 
 sudo: false
 
@@ -53,9 +54,13 @@ matrix:
       env: TRANSPORT=doctrine_dbal STABILITY="dev"
     - php: 7.4
       env: TRANSPORT=jackrabbit STABILITY="dev"
+    - php: nightly
+      env: TRANSPORT=doctrine_dbal
+    - php: nightly
+      env: TRANSPORT=jackrabbit
 
 before_install:
-  - phpenv config-rm xdebug.ini
+  - phpenv config-rm xdebug.ini || true
   - if ! [ -z "$STABILITY" ]; then composer config minimum-stability ${STABILITY}; fi;
   - if [ "$PHPBENCH" = "yes" ]; then composer require --no-update phpbench/phpbench=~0.16; fi;
   - composer global require --no-progress --no-scripts --no-plugins symfony/flex

composer.json

@@ -13,7 +13,7 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "php": "^7.1",
+        "php": "^7.1 || ^8.0",
         "doctrine/collections": "^1.0",
         "doctrine/common": "^2.4 || ^3.0",
         "doctrine/annotations": "^1.2",
@@ -30,7 +30,7 @@
         "symfony/yaml": "^2.3 || ^3.0 || ^4.0 || ^5.0",
         "symfony/phpunit-bridge": "^5.0",
         "liip/rmt": "^1.2",
-        "phpunit/phpunit": "^7.0"
+        "phpunit/phpunit": "^7.0 || ^8.0"
     },
     "suggest": {
         "symfony/yaml": "^3.4 || ^4.3 || ^5.0",

tests/Doctrine/Tests/ODM/PHPCR/PHPCRFunctionalTestCase.php

@@ -91,7 +91,7 @@ public function resetFunctionalNode(DocumentManager $dm)
         return $node;
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         foreach ($this->sessions as $session) {
             $session->logout();