wm/tests.sql

37 lines
1.8 KiB
PL/PgSQL

create schema if not exists test;
\i wm.sql
-- https://stackoverflow.com/questions/19982373/which-tools-libraries-do-you-use-to-unit-test-your-pl-pgsql
CREATE OR REPLACE FUNCTION assert_equals(expected anyelement, actual anyelement) RETURNS void AS $$
begin
if expected = actual or (expected is null and actual is null) then
--do nothing
else
raise exception 'Assertion Error. Expected <%> but was <%>', expected, actual;
end if;
end $$ LANGUAGE plpgsql;
drop table if exists figures;
create table figures (name text, way geometry);
insert into figures (name, way) values ('fig3',ST_GeomFromText('LINESTRING(0 0,12 0,13 4,20 2,20 0,32 0,33 10,38 16,43 15,44 10,44 0,60 0)'));
insert into figures (name, way) values ('fig3-1',ST_GeomFromText('LINESTRING(0 0,12 0,13 4,20 2,20 0,32 0,33 10,38 16,43 15,44 10,44 0)'));
insert into figures (name, way) values ('fig5',ST_GeomFromText('LINESTRING(0 39,19 52,27 77,26 104,41 115,49 115,65 103,65 75,53 45,63 15,91 0,91 0)'));
do $$
declare
bends geometry[];
begin
select detect_bends((select way from figures where name='fig3')) into bends;
perform assert_equals(3, array_length(bends, 1));
perform assert_equals(4::bigint, (select count(1) from (select (st_dumppoints(detect_bends[1])).path from bends) a));
perform assert_equals('LINESTRING(12 0,13 4,20 2,20 0)', st_astext(bends[1]));
perform assert_equals('LINESTRING(20 2,20 0,32 0,33 10)', st_astext(bends[2]));
perform assert_equals('LINESTRING(32 0,33 10,38 16,43 15,44 10,44 0)',st_astext(bends[3]));
perform assert_equals(3, array_length(detect_bends((select way from figures where name='fig3-1')), 1));
select detect_bends((select way from figures where name='fig5')) into bends;
perform assert_equals(2, array_length(bends, 1));
end $$ language plpgsql;