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mercury/tests/hard_coded/string_sub_string_search.m
2020-10-06 19:20:18 +11:00

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%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
:- module string_sub_string_search.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
%---------------------------------------------------------------------------%
:- implementation.
:- import_module string.
main(!IO) :-
( if
string.sub_string_search("", "", 0),
not string.sub_string_search("", "dog", _),
not string.sub_string_search("cat", "catdog", _),
string.sub_string_search("cat", "", 0),
string.sub_string_search("cat", "cat", 0),
string.sub_string_search("cat", "at", 1),
string.sub_string_search("cat", "t", 2),
not string.sub_string_search_start("catcatcat", "cat", -1, _),
string.sub_string_search_start("catcatcat", "cat", 0, 0),
string.sub_string_search_start("catcatcat", "cat", 1, 3),
string.sub_string_search_start("catcatcat", "cat", 2, 3),
string.sub_string_search_start("catcatcat", "cat", 3, 3),
string.sub_string_search_start("catcatcat", "cat", 4, 6),
string.sub_string_search_start("catcatcat", "cat", 5, 6),
string.sub_string_search_start("catcatcat", "cat", 6, 6),
not string.sub_string_search_start("catcatcat", "cat", 7, _),
not string.sub_string_search_start("catcatcat", "cat", 8, _),
not string.sub_string_search_start("catcatcat", "cat", 9, _),
not string.sub_string_search_start("catcatcat", "cat", 10, _),
string.sub_string_search("cαtcατcat", "cατ", length("cαt"))
then
io.write_string("test succeeded\n", !IO)
else
io.write_string("test failed\n", !IO)
).