Add a test for the DataTransformer in the case of the absence of captcha

Tests/Form/DataTransformer/HCatchaValueFetcherTest.php

@@ -15,6 +15,10 @@ class HCaptchaValueFetcherTest extends TestCase
 
     private $request;
 
+    private $noCaptchaRequestStack;
+
+    private $noCaptchaRequest;
+
     public function setUp(): void
     {
         $this->requestStack = $this->createMock(RequestStack::class);
@@ -30,6 +34,20 @@ public function setUp(): void
         $this->requestStack->expects($this->any())
                            ->method('getMasterRequest')
                            ->willReturn($this->request);
+
+        $this->noCaptchaRequestStack = $this->createMock(RequestStack::class);
+        $this->noCaptchaRequest = Request::create(
+            '/some_route',
+            'POST',
+            [], // request parameters
+            [], // cookies
+            [], // files
+            [ 'REMOTE_ADDR' => '10.0.1.1' ], // server
+            ''
+        );
+        $this->noCaptchaRequestStack->expects($this->any())
+                           ->method('getMasterRequest')
+                           ->willReturn($this->noCaptchaRequest);
     }
 
     public function test_The_value_fetcher_builds_the_correct_form_value_from_the_request()
@@ -41,6 +59,14 @@ public function test_The_value_fetcher_builds_the_correct_form_value_from_the_re
         $this->assertEquals($expected, $value);
     }
 
+    public function test_The_value_fetcher_builds_a_null_form_value_if_the_request_contains_no_captcha()
+    {
+        $valueFetcher = new HCaptchaValueFetcher($this->noCaptchaRequestStack);
+
+        $value = $valueFetcher->reverseTransform(null);
+        $this->assertNull($value);
+    }
+
     public function test_The_value_fetcher_does_not_do_transformation_from_model_to_form_data()
     {
         $valueFetcher = new HCaptchaValueFetcher($this->requestStack);