kitchenSinkQuery: add '@onVariableDefinition' directive (#3177)

Author: IvanGoncharov

src/__testUtils__/kitchenSinkQuery.ts

@@ -28,7 +28,9 @@ mutation likeStory @onMutation {
   }
 }
 
-subscription StoryLikeSubscription($input: StoryLikeSubscribeInput)
+subscription StoryLikeSubscription(
+  $input: StoryLikeSubscribeInput @onVariableDefinition
+)
   @onSubscription {
   storyLikeSubscribe(input: $input) {
     story {

src/language/__tests__/printer-test.ts

@@ -182,7 +182,7 @@ describe('Printer: Query document', () => {
         }
       }
 
-      subscription StoryLikeSubscription($input: StoryLikeSubscribeInput) @onSubscription {
+      subscription StoryLikeSubscription($input: StoryLikeSubscribeInput @onVariableDefinition) @onSubscription {
         storyLikeSubscribe(input: $input) {
           story {
             likers {

src/language/__tests__/visitor-test.ts

@@ -747,6 +747,10 @@ describe('Visitor', () => {
       ['enter', 'Name', 'name', 'NamedType'],
       ['leave', 'Name', 'name', 'NamedType'],
       ['leave', 'NamedType', 'type', 'VariableDefinition'],
+      ['enter', 'Directive', 0, undefined],
+      ['enter', 'Name', 'name', 'Directive'],
+      ['leave', 'Name', 'name', 'Directive'],
+      ['leave', 'Directive', 0, undefined],
       ['leave', 'VariableDefinition', 0, undefined],
       ['enter', 'Directive', 0, undefined],
       ['enter', 'Name', 'name', 'Directive'],