Merge pull request #16 from Codeception/php8

Support PHP 8

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [5.6, 7.0, 7.1, 7.2, 7.3, 7.4]
+        php: [5.6, 7.0, 7.1, 7.2, 7.3, 7.4, 8.0]
 
     steps:
     - name: Checkout code
@@ -24,10 +24,13 @@ jobs:
     - name: Validate composer.json and composer.lock
       run: composer validate
 
-    - name: Install dependencies
-      run: |
-        composer require phpunit/phpunit "<=8.5.2" --no-update --ignore-platform-reqs
-        composer install --prefer-dist --no-progress --no-interaction --no-suggest
+    - name: Install dependencies on PHP 7
+      if: matrix.php < 8
+      run: composer install --prefer-dist --no-progress --no-interaction
+
+    - name: Install dependencies on PHP 8
+      if: matrix.php == 8
+      run: composer install --prefer-dist --no-progress --no-interaction --ignore-platform-req=php
 
     - name: Run test suite
       run: php vendor/bin/codecept run

composer.json

@@ -15,11 +15,10 @@
     ],
     "minimum-stability": "RC",
     "require": {
-        "php": ">=5.6.0 <8.0",
+        "php": ">=5.6.0 <9.0",
         "codeception/codeception": "^4.0"
     },
     "require-dev": {
-        "codeception/util-robohelpers": "dev-master",
         "doctrine/orm": "^2",
         "doctrine/annotations": "^1",
         "doctrine/data-fixtures": "^1",