Add test for secret code generation

Author: scheb

Tests/Security/TwoFactor/Provider/Google/GoogleAuthenticatorTest.php

@@ -100,4 +100,13 @@ public function getQRContent_getContentForQrCode_returnUri(): void
         $returnValue = $this->authenticator->getQRContent($this->user);
         $this->assertEquals('QRCodeContent', $returnValue);
     }
+
+    /**
+     * @test
+     */
+    public function generateSecret_getRandomSecretCode_returnString(): void
+    {
+        $returnValue = $this->authenticator->generateSecret();
+        $this->assertEquals(52, strlen($returnValue));
+    }
 }

Tests/Security/TwoFactor/Provider/Totp/TotpAuthenticatorTest.php

@@ -100,4 +100,13 @@ public function getProvisioningUri_getContentForQrCode_returnUri(): void
         $returnValue = $this->authenticator->getQRContent($this->user);
         $this->assertEquals('provisioningUri', $returnValue);
     }
+
+    /**
+     * @test
+     */
+    public function generateSecret_getRandomSecretCode_returnString(): void
+    {
+        $returnValue = $this->authenticator->generateSecret();
+        $this->assertEquals(52, strlen($returnValue));
+    }
 }