test: POC simple pg_regress test

Makefile

@@ -83,6 +83,9 @@ $(EXTENSION).control: $(EXTENSION).control.in
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)
 
+# otherwise contrib_regression is picked
+CONTRIB_TESTDB = postgres
+
 .PHONY: test
 test:
-	net-with-nginx python -m pytest -s -vv $(PYTEST_ARGS)
+	net-with-nginx make installcheck

test/expected/http_get_wait.out

@@ -0,0 +1,18 @@
+\set ON_ERROR_STOP on
+BEGIN;
+SELECT net.http_get('http://localhost:8080') AS request_id \gset
+-- COMMIT is required otherwise the test runs forever
+COMMIT;
+SELECT (result).status,
+       (result).message,
+       ((result).response).status_code,
+       ((result).response).body
+FROM (
+  SELECT net._http_collect_response(:request_id, async := false) AS result
+) AS response;
+ status  | message | status_code |    body     
+---------+---------+-------------+-------------
+ SUCCESS | ok      |         200 | Hello world+
+         |         |             | 
+(1 row)
+

test/sql/http_get_wait.sql

@@ -0,0 +1,14 @@
+\set ON_ERROR_STOP on
+
+BEGIN;
+SELECT net.http_get('http://localhost:8080') AS request_id \gset
+-- COMMIT is required otherwise the test runs forever
+COMMIT;
+
+SELECT (result).status,
+       (result).message,
+       ((result).response).status_code,
+       ((result).response).body
+FROM (
+  SELECT net._http_collect_response(:request_id, async := false) AS result
+) AS response;