User can provide custom appsecret_proof

src/Kdyby/Facebook/Api/CurlClient.php

@@ -189,7 +189,7 @@ public function oauth($url, array $params)
 			$params['access_token'] = $this->fb->getAccessToken();
 		}
 
-		if (isset($params['access_token'])) {
+		if (isset($params['access_token']) && !isset($params['appsecret_proof'])) {
 			$params['appsecret_proof'] = $this->fb->config->getAppSecretProof($params['access_token']);
 		}
 

tests/KdybyTests/Facebook/ApiException.phpt

@@ -27,7 +27,6 @@ require_once __DIR__ . '/../bootstrap.php';
 class ApiExceptionTest extends Tester\TestCase
 {
 
-
 	public function testExceptionConstructorWithErrorCode()
 	{
 		$e = new FacebookApiException(array('error_code' => $code = 404));

tests/KdybyTests/Facebook/Facebook.phpt

@@ -881,6 +881,33 @@ class FacebookTest extends KdybyTests\FacebookTestCase
 
 
 
+	public function testAppsecretProofNoParams()
+	{
+		$facebook = $this->createWithRequest();
+		$apiClient = $facebook->mockApiClient();
+
+		$token = $facebook->getAccessToken();
+		$proof = $facebook->config->getAppSecretProof($token);
+
+		$facebook->api('/mattynoce');
+		Assert::same($proof, $apiClient->calls[0][1]['appsecret_proof']);
+	}
+
+
+
+	public function testAppsecretProofWithParams()
+	{
+		$facebook = $this->createWithRequest();
+		$apiClient = $facebook->mockApiClient();
+
+		$proof = 'foo';
+		$facebook->api('/mattynoce', array('appsecret_proof' => $proof));
+
+		Assert::same($proof, $apiClient->calls[0][1]['appsecret_proof']);
+	}
+
+
+
 	public function testJsonEncodeOfNonStringParams()
 	{
 		$facebook = $this->createWithRequest();