diff --git a/core/src/test/java/karate/graphql/field-to-aggregation/app-definition-field-to-aggregation.json b/core/src/test/java/karate/graphql/field-to-aggregation/app-definition-field-to-aggregation.json
index bb74961260..3e2f61fdba 100644
--- a/core/src/test/java/karate/graphql/field-to-aggregation/app-definition-field-to-aggregation.json
+++ b/core/src/test/java/karate/graphql/field-to-aggregation/app-definition-field-to-aggregation.json
@@ -5,7 +5,7 @@
     "name": "field-to-aggregation",
     "enabled": true
   },
-  "schema": "type Stat {_id: String posts: Int} type User { _id: ObjectId name: String email: String posts: [Post] postsByCategoryWithDataLoader: [BsonDocument] postsByCategory: [BsonDocument] emptyStage: [BsonDocument] malformedStage: [BsonDocument] } type Post { _id: ObjectId title: String body: String category: String created_at: DateTime author: User } type Query { userByEmail(email: String): User postsByCategory(category: String): [Post] countPostsByCategory: [Stat] }",
+  "schema": "enum Category { frontend, backend } type Stat {_id: String posts: Int} type User { _id: ObjectId name: String email: String posts: [Post] postsByCategoryWithDataLoader: [BsonDocument] postsGroupedByCategory: [BsonDocument] postsByCategory(category: Category): [Post] emptyStage: [BsonDocument] malformedStage: [BsonDocument] } type Post { _id: ObjectId title: String body: String category: Category created_at: DateTime author: User } type Query { userByEmail(email: String): User postsGroupedByCategory(category: Category): [Post] countPostsByCategory: [Stat] }",
   "mappings": {
     "User": {
       "postsByCategoryWithDataLoader": {
@@ -33,7 +33,7 @@
 					"caching": true
 				}
       },
-      "postsByCategory": {
+      "postsGroupedByCategory": {
         "db": "test-graphql",
         "collection": "posts-fta",
         "stages": [
@@ -54,6 +54,20 @@
           }
         ]
       },
+      "postsByCategory": {
+        "db": "test-graphql",
+        "collection": "posts-fta",
+        "stages": [
+          {
+            "$match": {
+              "author": {
+                "$fk": "_id"
+              },
+              "category": { "$arg": [ "category", "backend" ] }
+            }
+          }
+        ]
+      },
       "emptyStage": {
         "db": "test-graphql",
         "collection": "posts-fta",
@@ -92,7 +106,7 @@
           }
         }
       },
-      "postsByCategory": {
+      "postsGroupedByCategory": {
         "db": "test-graphql",
         "collection": "posts-fta",
         "find": {
diff --git a/core/src/test/java/karate/graphql/field-to-aggregation/field-to-aggregation.feature b/core/src/test/java/karate/graphql/field-to-aggregation/field-to-aggregation.feature
index 76c4bb7cdd..c23219a6bf 100644
--- a/core/src/test/java/karate/graphql/field-to-aggregation/field-to-aggregation.feature
+++ b/core/src/test/java/karate/graphql/field-to-aggregation/field-to-aggregation.feature
@@ -27,7 +27,7 @@ Scenario: Should return an array with two objects
      userByEmail(email: "foo@example.com"){
        name
        email
-       postsByCategory
+       postsGroupedByCategory
      }
    }
    """
@@ -37,7 +37,7 @@ Scenario: Should return an array with two objects
    And request query
    When method POST
    Then status 200
-   And match $..postsByCategory.length() == 2
+   And match $..postsGroupedByCategory.length() == 2
 
 
 Scenario: Should return an empty array for emptyStage field
@@ -94,7 +94,7 @@ Scenario: Get a list of posts by category and for each one return the author nam
   * text query =
   """
     {
-      postsByCategory(category: "backend") {
+      postsGroupedByCategory(category: backend) {
         author {
           name,
           postsByCategoryWithDataLoader
@@ -109,8 +109,70 @@ Scenario: Get a list of posts by category and for each one return the author nam
   When method POST
   Then status 200
 
+Scenario: Get users with all posts in backend category
+    * text query =
+    """
+        {
+        userByEmail(email: "foo@example.com"){
+          name
+          email
+          postsByCategory(category: backend) {
+            body
+          }
+        }
+      }
+    """
+
+    Given header Content-Type = contTypeGraphQL
+    And header Authorization = admin
+    And request query
+    When method POST
+    Then status 200
+    And match $.data.userByEmail.postsByCategory.length() == 2
+
+Scenario: Get users with all posts in frontend category
+    * text query =
+    """
+        {
+        userByEmail(email: "foo@example.com"){
+          name
+          email
+          postsByCategory(category: frontend) {
+            body
+          }
+        }
+      }
+    """
+
+    Given header Content-Type = contTypeGraphQL
+    And header Authorization = admin
+    And request query
+    When method POST
+    Then status 200
+    And match $.data.userByEmail.postsByCategory.length() == 1
+
+Scenario: Get users with all posts in the default category (backend). this uses arg with default value
+    * text query =
+    """
+        {
+        userByEmail(email: "foo@example.com"){
+          name
+          email
+          postsByCategory {
+            body
+          }
+        }
+      }
+    """
+
+    Given header Content-Type = contTypeGraphQL
+    And header Authorization = admin
+    And request query
+    When method POST
+    Then status 200
+    And match $.data.userByEmail.postsByCategory.length() == 2
 
-Scenario: Map query field to aggregation to count the number of posts by category 
+Scenario: Map query field to aggregation to count the number of posts by category
   * text query =
   """
     {
@@ -125,4 +187,4 @@ Scenario: Map query field to aggregation to count the number of posts by categor
   And header Authorization = admin
   And request query
   When method POST
-  Then status 200 
\ No newline at end of file
+  Then status 200
\ No newline at end of file