test: stub xml signer in NfseClient unit test

Signed-off-by: Vitor Mattos <vitor@php.rio>

Author: vitormattos

tests/Unit/Http/NfseClientTest.php

@@ -9,6 +9,7 @@
 
 use donatj\MockWebServer\MockWebServer;
 use donatj\MockWebServer\Response;
+use LibreCodeCoop\NfsePHP\Contracts\XmlSignerInterface;
 use LibreCodeCoop\NfsePHP\Dto\DpsData;
 use LibreCodeCoop\NfsePHP\Http\NfseClient;
 use LibreCodeCoop\NfsePHP\SecretStore\NoOpSecretStore;
@@ -22,6 +23,7 @@
 class NfseClientTest extends TestCase
 {
     private static MockWebServer $server;
+    private XmlSignerInterface $signer;
 
     public static function setUpBeforeClass(): void
     {
@@ -34,6 +36,18 @@ public static function tearDownAfterClass(): void
         self::$server->stop();
     }
 
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->signer = new class() implements XmlSignerInterface {
+            public function sign(string $xml, string $cnpj): string
+            {
+                return $xml;
+            }
+        };
+    }
+
     public function testEmitReturnsReceiptDataOnSuccess(): void
     {
         $payload = json_encode([
@@ -52,6 +66,7 @@ public function testEmitReturnsReceiptDataOnSuccess(): void
             secretStore:     $store,
             sandboxMode:     false,
             baseUrlOverride: self::$server->getServerRoot() . '/NFS-e/api/v1',
+            signer:          $this->signer,
         );
 
         $dps     = $this->makeDps();