psql: Add various tests

Add tests for psql features

- AUTOCOMMIT
- ON_ERROR_ROLLBACK
- ECHO errors

Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr>
Discussion: https://www.postgresql.org/message-id/6954328d-96f2-77f7-735f-7ce493a40949%40enterprisedb.com

Author: petere

src/test/regress/expected/psql.out

@@ -5179,3 +5179,102 @@ List of access methods
  pg_catalog | &&   | anyarray      | anyarray       | boolean     | overlaps
 (1 row)
 
+-- AUTOCOMMIT
+CREATE TABLE ac_test (a int);
+\set AUTOCOMMIT off
+INSERT INTO ac_test VALUES (1);
+COMMIT;
+SELECT * FROM ac_test;
+ a 
+---
+ 1
+(1 row)
+
+COMMIT;
+INSERT INTO ac_test VALUES (2);
+ROLLBACK;
+SELECT * FROM ac_test;
+ a 
+---
+ 1
+(1 row)
+
+COMMIT;
+BEGIN;
+INSERT INTO ac_test VALUES (3);
+COMMIT;
+SELECT * FROM ac_test;
+ a 
+---
+ 1
+ 3
+(2 rows)
+
+COMMIT;
+BEGIN;
+INSERT INTO ac_test VALUES (4);
+ROLLBACK;
+SELECT * FROM ac_test;
+ a 
+---
+ 1
+ 3
+(2 rows)
+
+COMMIT;
+\set AUTOCOMMIT on
+DROP TABLE ac_test;
+SELECT * FROM ac_test;  -- should be gone now
+ERROR:  relation "ac_test" does not exist
+LINE 1: SELECT * FROM ac_test;
+                      ^
+-- ON_ERROR_ROLLBACK
+\set ON_ERROR_ROLLBACK on
+CREATE TABLE oer_test (a int);
+BEGIN;
+INSERT INTO oer_test VALUES (1);
+INSERT INTO oer_test VALUES ('foo');
+ERROR:  invalid input syntax for type integer: "foo"
+LINE 1: INSERT INTO oer_test VALUES ('foo');
+                                     ^
+INSERT INTO oer_test VALUES (3);
+COMMIT;
+SELECT * FROM oer_test;
+ a 
+---
+ 1
+ 3
+(2 rows)
+
+BEGIN;
+INSERT INTO oer_test VALUES (4);
+ROLLBACK;
+SELECT * FROM oer_test;
+ a 
+---
+ 1
+ 3
+(2 rows)
+
+BEGIN;
+INSERT INTO oer_test VALUES (5);
+COMMIT AND CHAIN;
+INSERT INTO oer_test VALUES (6);
+COMMIT;
+SELECT * FROM oer_test;
+ a 
+---
+ 1
+ 3
+ 5
+ 6
+(4 rows)
+
+DROP TABLE oer_test;
+\set ON_ERROR_ROLLBACK off
+-- ECHO errors
+\set ECHO errors
+ERROR:  relation "notexists" does not exist
+LINE 1: SELECT * FROM notexists;
+                      ^
+STATEMENT:  SELECT * FROM notexists;

src/test/regress/sql/psql.sql

@@ -1241,3 +1241,66 @@ drop role regress_partitioning_role;
 \dfa bit* small*
 \do - pg_catalog.int4
 \do && anyarray *
+
+-- AUTOCOMMIT
+
+CREATE TABLE ac_test (a int);
+\set AUTOCOMMIT off
+
+INSERT INTO ac_test VALUES (1);
+COMMIT;
+SELECT * FROM ac_test;
+COMMIT;
+
+INSERT INTO ac_test VALUES (2);
+ROLLBACK;
+SELECT * FROM ac_test;
+COMMIT;
+
+BEGIN;
+INSERT INTO ac_test VALUES (3);
+COMMIT;
+SELECT * FROM ac_test;
+COMMIT;
+
+BEGIN;
+INSERT INTO ac_test VALUES (4);
+ROLLBACK;
+SELECT * FROM ac_test;
+COMMIT;
+
+\set AUTOCOMMIT on
+DROP TABLE ac_test;
+SELECT * FROM ac_test;  -- should be gone now
+
+-- ON_ERROR_ROLLBACK
+
+\set ON_ERROR_ROLLBACK on
+CREATE TABLE oer_test (a int);
+
+BEGIN;
+INSERT INTO oer_test VALUES (1);
+INSERT INTO oer_test VALUES ('foo');
+INSERT INTO oer_test VALUES (3);
+COMMIT;
+SELECT * FROM oer_test;
+
+BEGIN;
+INSERT INTO oer_test VALUES (4);
+ROLLBACK;
+SELECT * FROM oer_test;
+
+BEGIN;
+INSERT INTO oer_test VALUES (5);
+COMMIT AND CHAIN;
+INSERT INTO oer_test VALUES (6);
+COMMIT;
+SELECT * FROM oer_test;
+
+DROP TABLE oer_test;
+\set ON_ERROR_ROLLBACK off
+
+-- ECHO errors
+\set ECHO errors
+SELECT * FROM notexists;
+\set ECHO none