feat: custom presets

src/ArchPresets/Custom.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\ArchPresets;
+
+use Closure;
+use Pest\Arch\Contracts\ArchExpectation;
+use Pest\Expectation;
+
+/**
+ * @internal
+ */
+final class Custom extends AbstractPreset
+{
+    /**
+     * Creates a new preset instance.
+     *
+     * @param  array<int, string>  $userNamespaces
+     * @param  Closure(array<int, string>): array<Expectation<mixed>|ArchExpectation>  $execute
+     */
+    public function __construct(
+        private readonly array $userNamespaces,
+        private readonly string $name,
+        private readonly Closure $execute,
+    ) {
+        parent::__construct($userNamespaces);
+    }
+
+    /**
+     * Returns the name of the preset.
+     */
+    public function name(): string
+    {
+        return $this->name;
+    }
+
+    /**
+     * Executes the arch preset.
+     */
+    public function execute(): void
+    {
+        $this->expectations = ($this->execute)($this->userNamespaces);
+    }
+}