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/* :file: This file is part of the pgRouting project.
:copyright: Copyright (c) 2025-2026 pgRouting developers
:license: Creative Commons Attribution-Share Alike 3.0 https://creativecommons.org/licenses/by-sa/3.0 */
BEGIN;
SELECT CASE WHEN min_version('3.8.0') THEN plan(6) ELSE plan(1) END;
CREATE TABLE grid(
id serial NOT NULL primary key,
dir text,
the_geom geometry
);
-- creating the grid geometry
INSERT INTO grid(dir, the_geom)
SELECT
CASE WHEN s1 % 2 = 0 THEN 'FT' ELSE 'TF' END,
ST_AsTexT(ST_MakeLine(ST_MakePoint(1,s1), ST_MakePoint(6,s1)))
FROM (SELECT generate_series(1,6) AS s1) AS foo
UNION ALL
SELECT
CASE WHEN s1 % 2 = 0 THEN 'FT' ELSE 'TF' END,
ST_AsTexT(ST_MakeLine(ST_MakePoint(s1,1), ST_MakePoint(s1,6)))
FROM (SELECT generate_series(1,6) AS s1) AS foo;
CREATE OR REPLACE FUNCTION issue_test()
RETURNS SETOF TEXT AS
$BODY$
BEGIN
IF NOT min_version('3.8.0') THEN
RETURN QUERY SELECT skip(1, 'pgr_separateTouching new on 3.8.0');
RETURN;
END IF;
RETURN QUERY
SELECT is((SELECT count(*)::INTEGER FROM grid), 12, 'There are 12 original edges');
CREATE TABLE grid_r AS
SELECT *, NULL::INTEGER source, NULL::INTEGER target, NULL::TEXT dir
FROM pgr_separateTouching('SELECT id, the_geom AS geom FROM grid', 0.001);
RETURN QUERY
SELECT has_total_edges_vertices('grid_r', 20, 20);
RETURN QUERY
SELECT set_eq(
'SELECT id, count(*) FROM grid_r GROUP BY id ORDER BY id',
'VALUES (1,5),(6,5),(7,5),(12,5)',
'For each original edge there are 5 subedges');
-- set the source information
UPDATE grid_r AS e
SET source = rv.id
FROM tmp_rv rv
WHERE ST_StartPoint(e.geom) = rv.geom;
-- set the target information
UPDATE grid_r AS e
SET target = rv.id
FROM tmp_rv rv
WHERE ST_EndPoint(e.geom) = rv.geom;
-- se the dir
UPDATE grid_r AS e
SET dir = grid.dir
FROM grid
WHERE grid.id = e.id;
RETURN QUERY
SELECT is(
(SELECT DISTINCT count(*)::INTEGER FROM grid GROUP BY dir),
6, '6 is the count of different TF and FT in grid');
RETURN QUERY
SELECT is(
(SELECT DISTINCT count(*)::INTEGER FROM grid_r GROUP BY dir),
10, '10 is the count of different TF and FT in grid_r (4*5)');
END;
$BODY$ LANGUAGE plpgsql;
SELECT issue_test();
SELECT finish();
ROLLBACK;
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