magento/graphql-ce#387: Test coverage of getting IDs of CMS page/blocks by GraphQL API

Author: atwixfirster

app/code/Magento/CmsGraphQl/Model/Resolver/DataProvider/PageDataProvider.php

@@ -97,6 +97,7 @@ private function convertPageData(PageInterface $page)
         $pageData = [
             'url_key' => $page->getIdentifier(),
             PageInterface::PAGE_ID => $page->getId(),
+            PageInterface::IDENTIFIER => $page->getIdentifier(),
             PageInterface::TITLE => $page->getTitle(),
             PageInterface::CONTENT => $renderedContent,
             PageInterface::CONTENT_HEADING => $page->getContentHeading(),

app/code/Magento/CmsGraphQl/etc/schema.graphqls

@@ -22,6 +22,7 @@ type Query {
 
 type CmsPage @doc(description: "CMS page defines all CMS page information") {
     page_id: Int @doc(description: "Entity ID of CMS page")
+    identifier: String @doc(description: "Identifier of the CMS page")
     url_key: String @doc(description: "URL key of CMS page")
     title: String @doc(description: "CMS page title")
     content: String @doc(description: "CMS page content")