update batch dataloader test assertiion

Author: igdianov

autoconfigure/src/test/java/com/introproventures/graphql/jpa/query/autoconfigure/GraphQLSchemaAutoConfigurationTest.java

@@ -533,6 +533,6 @@ void batchLoaderRegistry() {
         DataLoaderRegistry dataLoaderRegistry = newRegistry().build();
         batchLoaderRegistry.registerDataLoaders(dataLoaderRegistry, newContext().build());
 
-        assertThat(dataLoaderRegistry.getDataLoadersMap()).isNotEmpty().containsOnlyKeys("TestEntity.children");
+        assertThat(dataLoaderRegistry.getDataLoadersMap()).isNotEmpty().containsKeys("TestEntity.children");
     }
 }

tests/boot-starter/src/test/java/com/introproventures/graphql/jpa/query/boot/test/autoconfigure/GraphQLJpaQueryGraphQlSourceAutoConfigurationTest.java

@@ -79,6 +79,6 @@ public void contextIsAutoConfigured() {
         DataLoaderRegistry dataLoaderRegistry = newRegistry().build();
         batchLoaderRegistry.registerDataLoaders(dataLoaderRegistry, newContext().build());
 
-        assertThat(dataLoaderRegistry.getDataLoadersMap()).isNotEmpty().containsOnlyKeys("Author.books", "Book.author");
+        assertThat(dataLoaderRegistry.getDataLoadersMap()).isNotEmpty().containsKeys("Author.books", "Book.author");
     }
 }