added mutation test trait helper

Author: chrissm79

src/Traits/MutationTestTrait.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace Nuwave\Relay\Traits;
+
+use GraphQL\Type\Definition\ObjectType;
+use GraphQL\Type\Definition\FieldDefinition;
+
+trait MutationTestTrait
+{
+    /**
+     * Send mutation query.
+     *
+     * @param  string $mutationName
+     * @param  array  $input
+     * @param  array $outputFields
+     * @return $this
+     */
+    public function mutate($mutationName, array $input, array $outputFields = [])
+    {
+        $query = $this->generateMutationQuery(
+            $mutationName,
+            $this->generateOutputFields($mutationName, $outputFields)
+        );
+
+        $variables = ['input' => array_merge(['clientMutationId' => (string)time()], $input)];
+
+        return $this->post('graphql', [
+            'query'     => $query,
+            'variables' => $variables
+        ]);
+    }
+
+    /**
+     * Generate mutation query.
+     *
+     * @param  string $mutation
+     * @param  string  $outputFields
+     * @return string
+     */
+    protected function generateMutationQuery($mutation, $outputFields = '')
+    {
+        $mutationName = ucfirst($mutation . 'Mutation');
+        $inputName = ucfirst($mutation . 'Input');
+
+        return 'mutation ' . $mutationName . '($input: ' . $inputName . '!){'. $mutation . '(input: $input){' . $outputFields . '}}';
+    }
+
+    /**
+     * Generate list of available output fields.
+     *
+     * @param  string $mutationName
+     * @return string
+     */
+    protected function generateOutputFields($mutationName, array $outputFields)
+    {
+        $fields = [];
+
+        if (! empty($outputFields)) {
+            foreach ($outputFields as $name => $availableFields) {
+                $fields[] = $name . '{'. implode(',', $availableFields) .'}';
+            }
+        } else {
+            $fields = $this->availableOutputFields($mutationName);
+        }
+
+        return implode(',', $fields);
+    }
+
+    /**
+     * Get all available output fields for mutation.
+     *
+     * @param  string $mutationName
+     * @return array
+     */
+    protected function availableOutputFields($mutationName)
+    {
+        $outputFields = ['clientMutationId'];
+        $mutations = config('graphql.schema.mutation');
+        $mutation = app($mutations[$mutationName]);
+
+        foreach ($mutation->type()->getFields() as $name => $field) {
+            if ($field instanceof FieldDefinition) {
+                $objectType = $field->getType();
+
+                if ($objectType instanceof ObjectType) {
+                    $fields = array_keys($objectType->getFields());
+                    $outputFields[] = $name . '{'. implode(',', $fields) .'}';
+                }
+            }
+        }
+
+        return $outputFields;
+    }
+}

tests/IntrospectionTest.php

@@ -7,7 +7,7 @@ class IntrospectionTest extends BaseTest
     /**
      * @test
      */
-    public function itAcceptsIntrospectionRequestForNodeInterface()
+    public function itAcceptsIntrospectionForNodeInterface()
     {
         $query = '{
           __type(name: "Node") {
@@ -50,7 +50,7 @@ public function itAcceptsIntrospectionRequestForNodeInterface()
     /**
      * @test
      */
-    public function itAcceptsIntrospectionRequestForNodeQuery()
+    public function itAcceptsIntrospectionForNodeQuery()
     {
         $query = '{
           __schema {