Add test for interrupt

expected/http.out

@@ -236,3 +236,18 @@ SELECT status FROM http_get('http://localhost:9080/delay/7');
     200
 (1 row)
 
+-- Check that statement interruption works
+SET statement_timeout = 200;
+CREATE TEMPORARY TABLE timer AS
+  SELECT now() AS start;
+SELECT *
+  FROM http_get('http://localhost:9080/delay/7');
+ERROR:  canceling statement due to user request
+SELECT round(extract(epoch FROM now() - start) * 10) AS m
+  FROM timer;
+ m 
+---
+ 2
+(1 row)
+
+DROP TABLE timer;

sql/http.sql

@@ -147,3 +147,16 @@ SELECT status FROM http_get('http://localhost:9080/status/555');
 -- the default (5s), but shorter than the new timeout
 SELECT http_set_curlopt('CURLOPT_TIMEOUT_MS', '10000');
 SELECT status FROM http_get('http://localhost:9080/delay/7');
+
+-- Check that statement interruption works
+SET statement_timeout = 200;
+CREATE TEMPORARY TABLE timer AS
+  SELECT now() AS start;
+SELECT *
+  FROM http_get('http://localhost:9080/delay/7');
+SELECT round(extract(epoch FROM now() - start) * 10) AS m
+  FROM timer;
+DROP TABLE timer;
+
+
+