test(policy): add docmdp provider unit coverage

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

tests/php/Unit/Service/Policy/Provider/DocMdp/DocMdpPolicyTest.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Libresign\Tests\Unit\Service\Policy\Provider\DocMdp;
+
+use OCA\Libresign\Enum\DocMdpLevel;
+use OCA\Libresign\Service\Policy\Model\PolicyContext;
+use OCA\Libresign\Service\Policy\Provider\DocMdp\DocMdpPolicy;
+use PHPUnit\Framework\TestCase;
+
+final class DocMdpPolicyTest extends TestCase {
+	public function testProviderBuildsDocMdpDefinition(): void {
+		$provider = new DocMdpPolicy();
+		$this->assertSame([DocMdpPolicy::KEY], $provider->keys());
+		$definition = $provider->get(DocMdpPolicy::KEY);
+
+		$this->assertSame(DocMdpPolicy::KEY, $definition->key());
+		$this->assertSame(DocMdpLevel::NOT_CERTIFIED->value, $definition->defaultSystemValue());
+		$this->assertSame([0, 1, 2, 3], $definition->allowedValues(new PolicyContext()));
+	}
+
+	public function testProviderNormalizesDocMdpLevelValues(): void {
+		$provider = new DocMdpPolicy();
+		$definition = $provider->get(DocMdpPolicy::KEY);
+
+		$this->assertSame(2, $definition->normalizeValue(2));
+		$this->assertSame(DocMdpLevel::CERTIFIED_FORM_FILLING_AND_ANNOTATIONS->value, $definition->normalizeValue(DocMdpLevel::CERTIFIED_FORM_FILLING_AND_ANNOTATIONS));
+	}
+}