229: [GraphQL caching] Add support for queries via HTTP GET

- fix web-api tests

Author: danielrenaud

dev/tests/api-functional/framework/Magento/TestFramework/TestCase/GraphQl/Client.php

@@ -81,9 +81,10 @@ public function get(string $query, array $variables = [], string $operationName
         $url = $this->getEndpointUrl();
         $requestArray = [
             'query' => $query,
-            'variables' => empty($variables) ? $variables : null,
-            'operationName' => empty($operationName) ? $operationName : null
+            'variables' => $variables ? $this->json->jsonEncode($variables) : null,
+            'operationName' => $operationName ?? null
         ];
+        array_filter($requestArray);
 
         $responseBody = $this->curlClient->get($url, $requestArray, $headers);
         return $this->processResponse($responseBody);

dev/tests/api-functional/testsuite/Magento/GraphQl/Framework/QueryComplexityLimiterTest.php

@@ -393,7 +393,8 @@ public function testQueryComplexityIsLimited()
 QUERY;
 
         self::expectExceptionMessageRegExp('/Max query complexity should be 300 but got 302/');
-        $this->graphQlQuery($query);
+        //Use POST request because request uri is too large for some servers
+        $this->graphQlMutation($query);
     }
 
     /**

dev/tests/api-functional/testsuite/Magento/GraphQl/TestModule/GraphQlQueryTest.php

@@ -73,7 +73,7 @@ public function testQueryViaGetRequestReturnsResults()
 }
 QUERY;
 
-        $response = $this->graphQlQuery($query, [], '', [], 'GET');
+        $response = $this->graphQlQuery($query, [], '', []);
 
         $this->assertArrayHasKey('testItem', $response);
     }
@@ -83,8 +83,9 @@ public function testQueryViaGetRequestWithVariablesReturnsResults()
         $id = 1;
 
         $query = <<<QUERY
+query getTestItem(\$id: Int!)
 {
-    testItem(\$id: Int!)
+    testItem(id: \$id)
     {
         item_id
         name
@@ -95,7 +96,7 @@ public function testQueryViaGetRequestWithVariablesReturnsResults()
             "id" => $id
         ];
 
-        $response = $this->graphQlQuery($query, $variables, '', [], 'GET');
+        $response = $this->graphQlQuery($query, $variables, '', []);
 
         $this->assertArrayHasKey('testItem', $response);
     }