refactor: self relationship

* Add test for self relationship in view

test/spec/Feature/Query/EmbedDisambiguationSpec.hs

@@ -362,6 +362,21 @@ spec =
               }
             }]|] { matchHeaders = [matchContentTypeJson] }
 
+        it "embeds parent and then embeds children on a view" $
+          get "/job?select=id,parent_id(*),children:job!parent_id(id,parent_id)" `shouldRespondWith`
+            [json|[
+              {
+                "id": 1,
+                "parent_id": null,
+                "children": [ { "id": 2, "parent_id": 1 } ]
+              },
+              {
+                "id": 2,
+                "parent_id": { "id": 1, "parent_id": null },
+                "children": []
+              }
+            ]|] { matchHeaders = [matchContentTypeJson] }
+
       context "two self reference foreign keys" $ do
         it "embeds parents" $
           get "/organizations?select=id,name,referee(id,name),auditor(id,name)&id=eq.3" `shouldRespondWith`

test/spec/fixtures/data.sql

@@ -771,3 +771,7 @@ INSERT INTO test.xmltest VALUES
 
 TRUNCATE TABLE test.oid_test CASCADE;
 INSERT INTO oid_test(id, oid_col, oid_array_col) VALUES (1, '12345', '{1,2,3,4,5}'::oid[]);
+
+TRUNCATE TABLE private.internal_job CASCADE;
+INSERT INTO private.internal_job (id, parent_id) VALUES (1, null);
+INSERT INTO private.internal_job (id, parent_id) VALUES (2, 1);

test/spec/fixtures/privileges.sql

@@ -180,6 +180,7 @@ GRANT ALL ON TABLE
     , limited_update_items_cpk_view
     , xmltest
     , oid_test
+    , job
 TO postgrest_test_anonymous;
 
 GRANT INSERT ON TABLE insertonly TO postgrest_test_anonymous;

test/spec/fixtures/schema.sql

@@ -2593,3 +2593,15 @@ CREATE TABLE oid_test(
   id int,
   oid_col oid,
   oid_array_col oid[]);
+
+CREATE TABLE private.internal_job
+(
+    id integer NOT NULL,
+    parent_id integer,
+    CONSTRAINT internal_job_pkey PRIMARY KEY (id),
+    CONSTRAINT parent_fk FOREIGN KEY (parent_id) REFERENCES private.internal_job (id)
+);
+
+CREATE VIEW test.job AS
+SELECT j.id, j.parent_id
+FROM private.internal_job j;