Update tests, statamic and php version

- Update newer phpunit config
- PHP 8 only
- Statamic 3.1

See #64

Author: Holger Lösken

composer.json

@@ -20,9 +20,9 @@
         }
     ],
     "require": {
-        "php": "^7.4 || ^8.0",
+        "php": "^8.0",
         "ext-json": "*",
-        "statamic/cms": "^3.0.48"
+        "statamic/cms": "^3.1"
     },
     "require-dev": {
         "orchestra/testbench": "^6.15.0",

phpunit.xml.dist

@@ -1,32 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="vendor/autoload.php"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
          backupGlobals="false"
          backupStaticAttributes="false"
          cacheResult="false"
          colors="true"
          verbose="true"
-         convertErrorsToExceptions="true"
+         convertErrorsToExceptions="false"
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          processIsolation="true"
-         stopOnFailure="true">
-    <testsuites>
-        <testsuite name="Test Suite">
-            <directory>tests</directory>
-        </testsuite>
-    </testsuites>
-    <filter>
-        <whitelist>
-            <directory suffix=".php">src/</directory>
-        </whitelist>
-    </filter>
-    <php>
-        <env name="APP_ENV" value="testing"/>
-        <env name="APP_DEBUG" value="true"/>
-        <env name="APP_KEY" value="base64:mIRM5Fpb6DtuRIejBwkqpt3c/ovlFZsSpo66efwo3g0="/>
-        <env name="CACHE_DRIVER" value="array"/>
-        <env name="SESSION_DRIVER" value="array"/>
-        <env name="QUEUE_DRIVER" value="sync"/>
-        <env name="MAIL_DRIVER" value="array"/>
-    </php>
+         stopOnFailure="true"
+>
+  <coverage>
+    <include>
+      <directory suffix=".php">src/</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="Test Suite">
+      <directory>tests</directory>
+    </testsuite>
+  </testsuites>
+  <php>
+    <env name="APP_ENV" value="testing"/>
+    <env name="APP_DEBUG" value="true"/>
+    <env name="APP_KEY" value="base64:mIRM5Fpb6DtuRIejBwkqpt3c/ovlFZsSpo66efwo3g0="/>
+    <env name="CACHE_DRIVER" value="array"/>
+    <env name="SESSION_DRIVER" value="array"/>
+    <env name="QUEUE_DRIVER" value="sync"/>
+    <env name="MAIL_DRIVER" value="array"/>
+  </php>
 </phpunit>