B2B-2256: "countries" and "country" GraphQl query has no cache identity

Author: joanhe

dev/tests/api-functional/testsuite/Magento/GraphQl/Directory/CountriesCacheTest.php

@@ -197,7 +197,7 @@ public function testCachePurgedWithStoreScopeCountryConfigChange()
         $this->assertArrayHasKey('countries', $defaultStoreResponseHit['body']);
         $defaultStoreResponseHitResult = $defaultStoreResponseHit['body']['countries'];
         $this->assertCount(1, $defaultStoreResponseHitResult);
-        $this->assertArrayHasKey('US', $defaultStoreResponseHitResult[0]['id']);
+        $this->assertEquals('US', $defaultStoreResponseHitResult[0]['id']);
 
         // Query test store countries after test store country config is changed
         // Verify we obtain a cache MISS at the 2nd time

dev/tests/api-functional/testsuite/Magento/GraphQl/Directory/CountryCacheTest.php

@@ -268,7 +268,7 @@ public function testCachePurgedWithStoreScopeCountryConfigChange()
         );
         $this->assertArrayHasKey('country', $defaultStoreResponseHit['body']);
         $defaultStoreResponseHitResult = $defaultStoreResponseHit['body']['country'];
-        $this->assertArrayHasKey('US', $defaultStoreResponseHitResult['id']);
+        $this->assertEquals('US', $defaultStoreResponseHitResult['id']);
 
         // Query test store DE country after test store country config is changed
         // Verify we obtain a cache MISS at the 2nd time