Add a better test for introspection

Author: alanpoulain

features/bootstrap/GraphqlContext.php

@@ -17,6 +17,7 @@
 use Behat\Gherkin\Node\PyStringNode;
 use Behatch\Context\RestContext;
 use Behatch\HttpCall\Request;
+use GraphQL\Type\Introspection;
 
 /**
  * Context for GraphQL.
@@ -95,6 +96,15 @@ public function ISendTheGraphqlRequestWithOperation(string $operation)
         $this->sendGraphqlRequest();
     }
 
+    /**
+     * @When I send the query to introspect the schema
+     */
+    public function ISendTheQueryToIntrospectTheSchema()
+    {
+        $this->graphqlRequest = ['query' => Introspection::getIntrospectionQuery()];
+        $this->sendGraphqlRequest();
+    }
+
     private function sendGraphqlRequest()
     {
         $this->request->setHttpHeader('Accept', null);

features/graphql/introspection.feature

@@ -9,20 +9,13 @@ Feature: GraphQL introspection support
     And the JSON node "errors[0].message" should be equal to "GraphQL query is not valid"
 
   Scenario: Introspect the GraphQL schema
-    When I send the following GraphQL request:
-    """
-    {
-      __schema {
-        types {
-          name
-        }
-      }
-    }
-    """
+    When I send the query to introspect the schema
     Then the response status code should be 200
     And the response should be in JSON
     And the header "Content-Type" should be equal to "application/json"
     And the JSON node "data.__schema.types" should exist
+    And the JSON node "data.__schema.queryType.name" should be equal to "Query"
+    And the JSON node "data.__schema.mutationType.name" should be equal to "Mutation"
 
   Scenario: Introspect types
     When I send the following GraphQL request: