test: add NoOpSecretStoreTest

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

Author: vitormattos

tests/Unit/SecretStore/NoOpSecretStoreTest.php

@@ -0,0 +1,53 @@
+<?php
+
+// SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+declare(strict_types=1);
+
+namespace LibreCodeCoop\NfsePHP\Tests\Unit\SecretStore;
+
+use LibreCodeCoop\NfsePHP\SecretStore\NoOpSecretStore;
+use LibreCodeCoop\NfsePHP\Tests\TestCase;
+
+/**
+ * @covers \LibreCodeCoop\NfsePHP\SecretStore\NoOpSecretStore
+ */
+class NoOpSecretStoreTest extends TestCase
+{
+    private NoOpSecretStore $store;
+
+    protected function setUp(): void
+    {
+        $this->store = new NoOpSecretStore();
+    }
+
+    public function testGetReturnsEmptyArrayWhenPathNotSet(): void
+    {
+        self::assertSame([], $this->store->get('pfx/unknown'));
+    }
+
+    public function testPutAndGetRoundtrip(): void
+    {
+        $this->store->put('pfx/12345678000100', ['password' => 'secret123']);
+
+        self::assertSame(['password' => 'secret123'], $this->store->get('pfx/12345678000100'));
+    }
+
+    public function testDeleteRemovesSecret(): void
+    {
+        $this->store->put('pfx/12345678000100', ['password' => 'secret123']);
+        $this->store->delete('pfx/12345678000100');
+
+        self::assertSame([], $this->store->get('pfx/12345678000100'));
+    }
+
+    public function testMultiplePathsAreIndependent(): void
+    {
+        $this->store->put('pfx/11111111000100', ['password' => 'aaa']);
+        $this->store->put('pfx/22222222000100', ['password' => 'bbb']);
+
+        self::assertSame('aaa', $this->store->get('pfx/11111111000100')['password']);
+        self::assertSame('bbb', $this->store->get('pfx/22222222000100')['password']);
+    }
+}