--
-- PATH
--
--DROP TABLE PATH_TBL;
CREATE TABLE PATH_TBL (f1 path);
INSERT INTO PATH_TBL VALUES ('[(1,2),(3,4)]');
INSERT INTO PATH_TBL VALUES (' ( ( 1 , 2 ) , ( 3 , 4 ) ) ');
INSERT INTO PATH_TBL VALUES ('[ (0,0),(3,0),(4,5),(1,6) ]');
INSERT INTO PATH_TBL VALUES ('((1,2) ,(3,4 ))');
INSERT INTO PATH_TBL VALUES ('1,2 ,3,4 ');
INSERT INTO PATH_TBL VALUES (' [1,2,3, 4] ');
INSERT INTO PATH_TBL VALUES ('((10,20))');	-- Only one point
INSERT INTO PATH_TBL VALUES ('[ 11,12,13,14 ]');
INSERT INTO PATH_TBL VALUES ('( 11,12,13,14) ');
-- bad values for parser testing
INSERT INTO PATH_TBL VALUES ('[]');
ERROR:  invalid input syntax for type path: "[]"
LINE 1: INSERT INTO PATH_TBL VALUES ('[]');
                                     ^
INSERT INTO PATH_TBL VALUES ('[(,2),(3,4)]');
ERROR:  invalid input syntax for type path: "[(,2),(3,4)]"
LINE 1: INSERT INTO PATH_TBL VALUES ('[(,2),(3,4)]');
                                     ^
INSERT INTO PATH_TBL VALUES ('[(1,2),(3,4)');
ERROR:  invalid input syntax for type path: "[(1,2),(3,4)"
LINE 1: INSERT INTO PATH_TBL VALUES ('[(1,2),(3,4)');
                                     ^
INSERT INTO PATH_TBL VALUES ('(1,2,3,4');
ERROR:  invalid input syntax for type path: "(1,2,3,4"
LINE 1: INSERT INTO PATH_TBL VALUES ('(1,2,3,4');
                                     ^
INSERT INTO PATH_TBL VALUES ('(1,2),(3,4)]');
ERROR:  invalid input syntax for type path: "(1,2),(3,4)]"
LINE 1: INSERT INTO PATH_TBL VALUES ('(1,2),(3,4)]');
                                     ^
SELECT '' AS count, f1 AS open_path FROM PATH_TBL WHERE isopen(f1);
 count |         open_path         
-------+---------------------------
       | [(1,2),(3,4)]
       | [(0,0),(3,0),(4,5),(1,6)]
       | [(1,2),(3,4)]
       | [(11,12),(13,14)]
(4 rows)

SELECT '' AS count, f1 AS closed_path FROM PATH_TBL WHERE isclosed(f1);
 count |    closed_path    
-------+-------------------
       | ((1,2),(3,4))
       | ((1,2),(3,4))
       | ((1,2),(3,4))
       | ((10,20))
       | ((11,12),(13,14))
(5 rows)

SELECT '' AS count, pclose(f1) AS closed_path FROM PATH_TBL;
 count |        closed_path        
-------+---------------------------
       | ((1,2),(3,4))
       | ((1,2),(3,4))
       | ((0,0),(3,0),(4,5),(1,6))
       | ((1,2),(3,4))
       | ((1,2),(3,4))
       | ((1,2),(3,4))
       | ((10,20))
       | ((11,12),(13,14))
       | ((11,12),(13,14))
(9 rows)

SELECT '' AS count, popen(f1) AS open_path FROM PATH_TBL;
 count |         open_path         
-------+---------------------------
       | [(1,2),(3,4)]
       | [(1,2),(3,4)]
       | [(0,0),(3,0),(4,5),(1,6)]
       | [(1,2),(3,4)]
       | [(1,2),(3,4)]
       | [(1,2),(3,4)]
       | [(10,20)]
       | [(11,12),(13,14)]
       | [(11,12),(13,14)]
(9 rows)