test(policy): rename footer policy provider coverage

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

Author: vitormattos

tests/php/Unit/Service/Policy/Provider/Footer/AddFooterPolicyTest.php

@@ -0,0 +1,94 @@
+<?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\Footer;
+
+use OCA\Libresign\Service\Policy\Model\PolicyContext;
+use OCA\Libresign\Service\Policy\Provider\Footer\FooterPolicy;
+use OCA\Libresign\Service\Policy\Provider\Footer\FooterPolicyValue;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+
+final class FooterPolicyTest extends TestCase {
+	public function testProviderBuildsAddFooterDefinition(): void {
+		$provider = new FooterPolicy();
+		$this->assertSame([FooterPolicy::KEY], $provider->keys());
+		$definition = $provider->get(FooterPolicy::KEY);
+
+		$this->assertSame(FooterPolicy::KEY, $definition->key());
+		$this->assertSame(
+			FooterPolicyValue::encode(FooterPolicyValue::defaults()),
+			$definition->defaultSystemValue(),
+		);
+		$this->assertSame([], $definition->allowedValues(new PolicyContext()));
+	}
+
+	#[DataProvider('normalizationCases')]
+	public function testProviderNormalizesValues(mixed $input, array $expected): void {
+		$provider = new FooterPolicy();
+		$definition = $provider->get(FooterPolicy::KEY);
+
+		$this->assertSame(
+			FooterPolicyValue::encode($expected),
+			$definition->normalizeValue($input),
+		);
+	}
+
+	/**
+	 * @return array<string, array{0: mixed, 1: array{enabled: bool, writeQrcodeOnFooter: bool, validationSite: string, customizeFooterTemplate: bool}}>
+	 */
+	public static function normalizationCases(): array {
+		return [
+			'boolean true enables footer with defaults' => [
+				true,
+				[
+					'enabled' => true,
+					'writeQrcodeOnFooter' => true,
+					'validationSite' => '',
+					'customizeFooterTemplate' => false,
+				],
+			],
+			'string zero disables footer with defaults' => [
+				'0',
+				[
+					'enabled' => false,
+					'writeQrcodeOnFooter' => true,
+					'validationSite' => '',
+					'customizeFooterTemplate' => false,
+				],
+			],
+			'structured json keeps full explicit payload' => [
+				'{"enabled":true,"writeQrcodeOnFooter":false,"validationSite":"https://validation.example","customizeFooterTemplate":true}',
+				[
+					'enabled' => true,
+					'writeQrcodeOnFooter' => false,
+					'validationSite' => 'https://validation.example',
+					'customizeFooterTemplate' => true,
+				],
+			],
+			'legacy snake case json is normalized' => [
+				'{"addFooter":"1","write_qrcode_on_footer":"0","validation_site":" https://legacy.example/base/ ","customize_footer_template":"1"}',
+				[
+					'enabled' => true,
+					'writeQrcodeOnFooter' => false,
+					'validationSite' => 'https://legacy.example/base/',
+					'customizeFooterTemplate' => true,
+				],
+			],
+			'invalid json falls back to enabled false from scalar parser' => [
+				'{invalid-json',
+				[
+					'enabled' => false,
+					'writeQrcodeOnFooter' => true,
+					'validationSite' => '',
+					'customizeFooterTemplate' => false,
+				],
+			],
+		];
+	}
+}