[skip ci] fix introspection query if any enum column present in primary key (fix hasura#5200) (hasura#5522)

Author: rakeshkky

CHANGELOG.md

@@ -13,6 +13,7 @@ If you do have such headers configured, then you must update the header configur
 
 (Add entries here in the order of: server, console, cli, docs, others)
 
+- server: fix failing introspection query when an enum column is part of a primary key (fixes #5200)
 - server: disallow headers from env variables starting with `HASURA_GRAPHQL_` in actions, event triggers & remote schemas (#5519)
 **WARNING**: This might break certain deployments. See `Breaking change` section above.
 - server: bugfix to allow HASURA_GRAPHQL_QUERY_PLAN_CACHE_SIZE of 0 (#5363)

server/tests-py/queries/graphql_query/enums/introspect_user_role.yaml

@@ -0,0 +1,48 @@
+# https://github.com/hasura/graphql-engine/issues/5200
+description: Test introspecting enum types as user role
+url: /v1/graphql
+status: 200
+headers:
+  X-Hasura-Role: user
+response:
+  data:
+    country:
+      kind: ENUM
+      name: country_enum
+      enumValues:
+      - name: India
+        description: Republic of India
+      - name: USA
+        description: United States of America
+    zones:
+      fields:
+      - name: code
+        type:
+          ofType:
+            name: String
+      - name: id
+        type:
+          ofType:
+            name: Int
+query:
+  query: |
+    {
+      country: __type(name: "country_enum") {
+        name
+        kind
+        enumValues {
+          name
+          description
+        }
+      }
+      zones: __type(name: "zones") {
+        fields {
+          name
+          type {
+            ofType {
+              name
+            }
+          }
+        }
+      }
+    }

server/tests-py/queries/graphql_query/enums/setup.yaml

@@ -23,12 +23,34 @@ args:
         ('Alyssa', 'red'),
         ('Ben', 'blue');
 
+      CREATE TABLE country
+        ( value text PRIMARY KEY
+        , comment text);
+      INSERT INTO country (value, comment) VALUES
+        ('India', 'Republic of India'),
+        ('USA',   'United States of America');
+
+      CREATE TABLE zones
+        ( id SERIAL
+        , code text NOT NULL
+        , country text NOT NULL REFERENCES country
+        , PRIMARY KEY (code, country) );
+      INSERT INTO zones (code, country) VALUES
+        ('67432',   'USA'),
+        ('600036',  'India');
+
 - type: track_table
   args:
     table: colors
     is_enum: true
 - type: track_table
   args: users
+- type: track_table
+  args:
+    table: country
+    is_enum: true
+- type: track_table
+  args: zones
 
 # Anonymous users can query users, but not colors
 - type: create_select_permission
@@ -38,3 +60,12 @@ args:
     permission:
       columns: [id, name, favorite_color]
       filter: {}
+
+# A user can query only code but not country
+- type: create_select_permission
+  args:
+    table: zones
+    role: user
+    permission:
+      columns: [id, code]
+      filter: {}

server/tests-py/queries/graphql_query/enums/teardown.yaml

@@ -5,4 +5,6 @@ args:
     sql: |
       DROP TABLE users;
       DROP TABLE colors;
+      DROP TABLE zones;
+      DROP TABLE country;
     cascade: true

server/tests-py/test_graphql_queries.py

@@ -564,6 +564,9 @@ def dir(cls):
     def test_introspect(self, hge_ctx, transport):
         check_query_f(hge_ctx, self.dir() + '/introspect.yaml', transport)
 
+    def test_introspect_user_role(self, hge_ctx, transport):
+        check_query_f(hge_ctx, self.dir() + '/introspect_user_role.yaml', transport)
+
     def test_select_enum_field(self, hge_ctx, transport):
         check_query_f(hge_ctx, self.dir() + '/select_enum_field.yaml', transport)