Skip database reset on partial test run

tests/functions.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This files contains functions that are used in the tests, especially the bootstrap.php file.
+ */
+
+/**
+ * Returns true if the current test run is a partial run.
+ * A partial run is a run that only runs a subset of the tests using the --filter, --testsuite, --group or --exclude-group options.
+ */
+function isPartialRun(): bool
+{
+    foreach ($_SERVER['argv'] as $arg) {
+        if (str_starts_with($arg, '--filter')) {
+            return true;
+        }
+
+        if (str_starts_with($arg, '--testsuite')) {
+            return true;
+        }
+
+        if (str_starts_with($arg, '--group')) {
+            return true;
+        }
+
+        if (str_starts_with($arg, '--exclude-group')) {
+            return true;
+        }
+    }
+
+    return false;
+}