tests support folder

phpunit.php

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+<?php
+
+error_reporting(E_ALL);
+
+$autoloader = __DIR__ . '/vendor/autoload.php';
+
+if (! file_exists($autoloader)) {
+    echo "Composer autoloader not found: $autoloader" . PHP_EOL;
+    echo "Please issue 'composer install' and try again." . PHP_EOL;
+    exit(1);
+}
+
+require $autoloader;

phpunit.xml

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+<?xml version="1.0"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         bootstrap="./phpunit.php"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         colors="true"
+         verbose="true"
+         processIsolation="true"
+>
+    <coverage processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">./src</directory>
+        </include>
+    </coverage>
+    <testsuites>
+        <testsuite name="volt/unit">
+            <directory>./tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>