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1791-Property-based-tests-for-the-gb_sets-modul...
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File 1791-Property-based-tests-for-the-gb_sets-module.patch of Package erlang
From 1dfebf36fb81ef798c67ae775c05597d8cfd2d20 Mon Sep 17 00:00:00 2001 From: Maria Scott <maria-12648430@hnc-agency.org> Date: Fri, 18 Aug 2023 12:30:25 +0200 Subject: [PATCH] Property-based tests for the gb_sets module --- lib/stdlib/test/Makefile | 1 + .../test/gb_sets_property_test_SUITE.erl | 97 ++++++ .../test/property_test/gb_sets_prop.erl | 303 ++++++++++++++++++ 3 files changed, 401 insertions(+) create mode 100644 lib/stdlib/test/gb_sets_property_test_SUITE.erl create mode 100644 lib/stdlib/test/property_test/gb_sets_prop.erl diff --git a/lib/stdlib/test/Makefile b/lib/stdlib/test/Makefile index bdac775256..80037703c9 100644 --- a/lib/stdlib/test/Makefile +++ b/lib/stdlib/test/Makefile @@ -44,6 +44,7 @@ MODULES= \ filename_SUITE \ fixtable_SUITE \ format_SUITE \ + gb_sets_property_test_SUITE \ gen_event_SUITE \ gen_fsm_SUITE \ gen_server_SUITE \ diff --git a/lib/stdlib/test/gb_sets_property_test_SUITE.erl b/lib/stdlib/test/gb_sets_property_test_SUITE.erl new file mode 100644 index 0000000000..4ba8809506 --- /dev/null +++ b/lib/stdlib/test/gb_sets_property_test_SUITE.erl @@ -0,0 +1,97 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2021-2022. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% +-module(gb_sets_property_test_SUITE). + +-include_lib("common_test/include/ct.hrl"). + +-compile(export_all). +-compile(nowarn_export_all). + +all() -> [ + add_case, + balance_case, + delete_case, delete_any_case, + difference_case, + from_ordset_case, + insert_case, + is_member_case, + iterator_case, iterator_from_case, + largest_case, + singleton_case, + smallest_case, + take_largest_case, + take_smallest_case + ]. + +init_per_suite(Config) -> + ct_property_test:init_per_suite(Config). + +end_per_suite(Config) -> + Config. + +add_case(Config) -> + do_proptest(prop_add, Config). + +balance_case(Config) -> + do_proptest(prop_balance, Config). + +delete_case(Config) -> + do_proptest(prop_delete, Config). + +delete_any_case(Config) -> + do_proptest(prop_delete_any, Config). + +difference_case(Config) -> + do_proptest(prop_difference, Config). + +from_ordset_case(Config) -> + do_proptest(prop_from_ordset, Config). + +insert_case(Config) -> + do_proptest(prop_insert, Config). + +is_member_case(Config) -> + do_proptest(prop_is_member, Config). + +iterator_case(Config) -> + do_proptest(prop_iterator, Config). + +iterator_from_case(Config) -> + do_proptest(prop_iterator_from, Config). + +largest_case(Config) -> + do_proptest(prop_largest, Config). + +singleton_case(Config) -> + do_proptest(prop_singleton, Config). + +smallest_case(Config) -> + do_proptest(prop_smallest, Config). + +take_largest_case(Config) -> + do_proptest(prop_take_largest, Config). + +take_smallest_case(Config) -> + do_proptest(prop_take_smallest, Config). + +do_proptest(Prop, Config) -> + ct_property_test:quickcheck( + gb_sets_prop:Prop(), + Config). diff --git a/lib/stdlib/test/property_test/gb_sets_prop.erl b/lib/stdlib/test/property_test/gb_sets_prop.erl new file mode 100644 index 0000000000..a4097904d9 --- /dev/null +++ b/lib/stdlib/test/property_test/gb_sets_prop.erl @@ -0,0 +1,303 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2021-2022. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% +-module(gb_sets_prop). + +-include_lib("common_test/include/ct_property_test.hrl"). + +%%%%%%%%%%%%%%%%%% +%%% Properties %%% +%%%%%%%%%%%%%%%%%% + +%% --- add/2 ---------------------------------------------------------- +%% +%% add_element/2 is an alias for add/2 +%% Since add_element/2 is tested in sets_prop, this property only tests if +%% the result of add/2 is the same as the result of add_element/2. +prop_add() -> + ?FORALL( + {S, L}, + ?LET( + {L1, L2}, + {ct_proper_ext:safe_list(), + non_empty(ct_proper_ext:safe_list())}, + {gb_sets:from_list(L1), L1 ++ L2} + ), + lists:all(fun(E) -> gb_sets:add(E, S) =:= gb_sets:add_element(E, S) end, L) + ). + +%% --- balance/1 ------------------------------------------------------ +prop_balance() -> + ?FORALL( + S, + ?LET( + {L1, L2}, + {ct_proper_ext:safe_list(), + ct_proper_ext:safe_list()}, + lists:foldl( + fun gb_sets:del_element/2, + gb_sets:from_list(L1 ++ L2), + L1 + ) + ), + gb_sets:is_equal(S, gb_sets:balance(S)) + ). + +%% --- delete/2 ------------------------------------------------------- +prop_delete() -> + ?FORALL( + {S, L}, + ?LET( + {L1, L2}, + {ct_proper_ext:safe_list(), + non_empty(ct_proper_ext:safe_list())}, + {gb_sets:from_list(L1), L1 ++ L2} + ), + lists:all( + fun(E) -> + try + gb_sets:delete(E, S) =:= gb_sets:del_element(E, S) + of + _ -> gb_sets:is_element(E, S) + catch + error:_ -> not gb_sets:is_element(E, S) + end + end, + L + ) + ). + +%% --- delete_any/2 --------------------------------------------------- +%% +%% del_element/2 is an alias for delete_any/2 +%% Since del_element/2 is tested in sets_prop, this property only tests if +%% the result of delete_any/2 is the same as the result of del_element/2. +prop_delete_any() -> + ?FORALL( + {S, L}, + ?LET( + {L1, L2}, + {ct_proper_ext:safe_list(), + non_empty(ct_proper_ext:safe_list())}, + {gb_sets:from_list(L1), L1 ++ L2} + ), + lists:all(fun(E) -> gb_sets:delete_any(E, S) =:= gb_sets:del_element(E, S) end, L) + ). + +%% --- difference/2 --------------------------------------------------- +%% +%% subtract/2 is an alias for difference/2 +%% Since subtract/2 is tested in sets_prop, this property only tests if +%% the result of difference/2 is the same as the result of subtract/2. +prop_difference() -> + ?FORALL( + {S1, S2}, + ?LET( + {L1, L2, Both}, + {ct_proper_ext:safe_list(), + ct_proper_ext:safe_list(), + ct_proper_ext:safe_list()}, + {gb_sets:from_list(L1 ++ Both), gb_sets:from_list(L2 ++ Both)} + ), + gb_sets:difference(S1, S2) =:= gb_sets:subtract(S1, S2) + ). + +%% --- from_ordset/1 -------------------------------------------------- +prop_from_ordset() -> + ?FORALL( + L, + ct_proper_ext:safe_list(), + gb_sets:is_equal(gb_sets:from_list(L), + gb_sets:from_ordset(ordsets:from_list(L))) + ). + +%% --- insert/2 ------------------------------------------------------- +prop_insert() -> + ?FORALL( + {S, L}, + ?LET( + {L1, L2}, + {ct_proper_ext:safe_list(), + non_empty(ct_proper_ext:safe_list())}, + {gb_sets:from_list(L1), L1 ++ L2} + ), + lists:all( + fun(E) -> + try + gb_sets:insert(E, S) =:= gb_sets:add_element(E, S) + of + _ -> not gb_sets:is_element(E, S) + catch + error:_ -> gb_sets:is_element(E, S) + end + end, + L + ) + ). + +%% --- is_member/2 ---------------------------------------------------- +%% +%% is_element/2 is an alias for is_member/2 +%% Since is_element/2 is tested in sets_prop, this property only tests if +%% the result of is_member/2 is the same as the result of is_element/2. +prop_is_member() -> + ?FORALL( + {S, L}, + ?LET( + {L1, L2}, + {ct_proper_ext:safe_list(), + non_empty(ct_proper_ext:safe_list())}, + {gb_sets:from_list(L1), L1 ++ L2} + ), + lists:all(fun(E) -> gb_sets:is_member(E, S) =:= gb_sets:is_element(E, S) end, L) + ). + +%% --- iterator/1 ----------------------------------------------------- +%% +%% This property implicitly tests next/1 +prop_iterator() -> + ?FORALL( + {S, L}, + ?LET( + L, + ct_proper_ext:safe_list(), + begin + L1 = lists:usort(L), + {gb_sets:from_list(L1), L1} + end + ), + do_iterate(gb_sets:iterator(S), L) + ). + +do_iterate(none, L) -> + L =:= []; +do_iterate(I, []) -> + none =:= gb_sets:next(I); +do_iterate(I0, L0) -> + {E, I1} = gb_sets:next(I0), + lists:member(E, L0) andalso + do_iterate_from(E, I1, lists:delete(E, L0)). + +%% --- iterator_from/2 ------------------------------------------------ +%% +%% This property implicitly tests next/1 +prop_iterator_from() -> + ?FORALL( + {S, L, From}, + ?LET( + {L, E}, + {ct_proper_ext:safe_list(), ct_proper_ext:safe_any()}, + begin + L1 = lists:usort(L), + L2 = lists:dropwhile(fun(X) -> X < E end, L1), + F = case L2 of + [] -> E; + _ -> oneof([E, hd(L2)]) + end, + {gb_sets:from_list(L1), L2, F} + end + ), + do_iterate_from(From, gb_sets:iterator_from(From, S), L) + ). + +do_iterate_from(_Min, none, L) -> + L =:= []; +do_iterate_from(_Min, I, []) -> + none =:= gb_sets:next(I); +do_iterate_from(Min, I0, L0) -> + {E, I1} = gb_sets:next(I0), + lists:member(E, L0) andalso + Min =< E andalso + do_iterate_from(E, I1, lists:delete(E, L0)). + +%% --- largest/1 ------------------------------------------------------ +prop_largest() -> + ?FORALL( + {Set, Largest}, + ?LET( + L, + non_empty(ct_proper_ext:safe_list()), + begin + L1 = lists:usort(L), + {gb_sets:from_list(L1), lists:last(L1)} + end + ), + Largest =:= gb_sets:largest(Set) + ). + +%% --- singleton/1 ---------------------------------------------------- +prop_singleton() -> + ?FORALL( + E, + ct_proper_ext:safe_any(), + [E] =:= gb_sets:to_list(gb_sets:singleton(E)) + ). + +%% --- smallest/1 ----------------------------------------------------- +prop_smallest() -> + ?FORALL( + {Set, Smallest}, + ?LET( + L, + non_empty(ct_proper_ext:safe_list()), + begin + L1 = lists:usort(L), + {gb_sets:from_list(L1), hd(L1)} + end + ), + Smallest =:= gb_sets:smallest(Set) + ). + +%% --- take_largest/1 ------------------------------------------------- +prop_take_largest() -> + ?FORALL( + {S, Largest}, + ?LET( + L, + non_empty(ct_proper_ext:safe_list()), + begin + L1 = lists:usort(L), + {gb_sets:from_list(L1), lists:last(L1)} + end + ), + begin + {Largest1, S1} = gb_sets:take_largest(S), + Largest1 =:= Largest andalso + gb_sets:is_equal(S1, gb_sets:del_element(Largest, S)) + end + ). + +%% --- take_smallest/1 ------------------------------------------------ +prop_take_smallest() -> + ?FORALL( + {S, Smallest}, + ?LET( + L, + non_empty(ct_proper_ext:safe_list()), + begin + L1 = lists:usort(L), + {gb_sets:from_list(L1), hd(L1)} + end + ), + begin + {Smallest1, S1} = gb_sets:take_smallest(S), + Smallest1 =:= Smallest andalso + gb_sets:is_equal(S1, gb_sets:del_element(Smallest, S)) + end + ). -- 2.35.3
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