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-module(map_dict_test).
-compile(no_auto_import).
-export([from_list_test/0, has_key_test/0, new_test/0, fetch_test/0, put_test/0, map_values_test/0, keys_test/0, values_test/0, take_test/0, drop_test/0, merge_test/0, delete_test/0, update_test/0, fold_test/0]).
from_list_test() ->
expect:equal(map_dict:size(map_dict:from_list([{4, 0}, {1, 0}])), 2).
has_key_test() ->
expect:false(map_dict:has_key(map_dict:from_list([]), 1)),
expect:true(map_dict:has_key(map_dict:from_list([{1, 0}]), 1)),
expect:true(map_dict:has_key(map_dict:from_list([{4, 0}, {1, 0}]), 1)),
expect:false(map_dict:has_key(map_dict:from_list([{4, 0}, {1, 0}]), 0)).
new_test() ->
expect:equal(map_dict:size(map_dict:new()), 0),
expect:equal(map_dict:to_list(map_dict:new()), []).
fetch_test() ->
Proplist = [{4, 0}, {1, 1}],
M = map_dict:from_list(Proplist),
expect:equal(map_dict:fetch(M, 4), {ok, 0}),
expect:equal(map_dict:fetch(M, 1), {ok, 1}),
expect:is_error(map_dict:fetch(M, 2)).
put_test() ->
expect:equal(map_dict:put(map_dict:put(map_dict:put(map_dict:new(),
<<"a">>,
0),
<<"b">>,
1),
<<"c">>,
2),
map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2}])).
map_values_test() ->
expect:equal(map_dict:map_values(map_dict:from_list([{1, 0},
{2, 1},
{3, 2}]),
fun(K, V) -> K + V end),
map_dict:from_list([{1, 1}, {2, 3}, {3, 5}])).
keys_test() ->
expect:equal(map_dict:keys(map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2}])),
[<<"a">>, <<"b">>, <<"c">>]).
values_test() ->
expect:equal(map_dict:values(map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2}])),
[0, 1, 2]).
take_test() ->
expect:equal(map_dict:take(map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2}]),
[<<"a">>, <<"b">>, <<"d">>]),
map_dict:from_list([{<<"a">>, 0}, {<<"b">>, 1}])).
drop_test() ->
expect:equal(map_dict:drop(map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2}]),
[<<"a">>, <<"b">>, <<"d">>]),
map_dict:from_list([{<<"c">>, 2}])).
merge_test() ->
A = map_dict:from_list([{<<"a">>, 2}, {<<"c">>, 4}, {<<"d">>, 3}]),
B = map_dict:from_list([{<<"a">>, 0}, {<<"b">>, 1}, {<<"c">>, 2}]),
expect:equal(map_dict:merge(A, B),
map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2},
{<<"d">>, 3}])),
expect:equal(map_dict:merge(B, A),
map_dict:from_list([{<<"a">>, 2},
{<<"b">>, 1},
{<<"c">>, 4},
{<<"d">>, 3}])).
delete_test() ->
expect:equal(map_dict:delete(map_dict:delete(map_dict:from_list([{<<"a">>,
0},
{<<"b">>,
1},
{<<"c">>,
2}]),
<<"a">>),
<<"d">>),
map_dict:from_list([{<<"b">>, 1}, {<<"c">>, 2}])).
update_test() ->
Dict = map_dict:from_list([{<<"a">>, 0}, {<<"b">>, 1}, {<<"c">>, 2}]),
IncOrZero = fun(X) -> case X of
{ok, I} ->
I + 1;
{error, _} ->
0
end end,
expect:equal(map_dict:update(Dict, <<"a">>, IncOrZero),
map_dict:from_list([{<<"a">>, 1},
{<<"b">>, 1},
{<<"c">>, 2}])),
expect:equal(map_dict:update(Dict, <<"b">>, IncOrZero),
map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 2},
{<<"c">>, 2}])),
expect:equal(map_dict:update(Dict, <<"z">>, IncOrZero),
map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2},
{<<"z">>, 0}])).
fold_test() ->
Dict = map_dict:from_list([{<<"a">>, 0},
{<<"b">>, 1},
{<<"c">>, 2},
{<<"d">>, 3}]),
Add = fun(_, V, Acc) -> V + Acc end,
expect:equal(map_dict:fold(Dict, 0, Add), 6),
Concat = fun(K, _, Acc) -> str:append(Acc, K) end,
expect:equal(map_dict:fold(Dict, <<"">>, Concat), <<"abcd">>),
expect:equal(map_dict:fold(map_dict:from_list([]), 0, Add), 0).
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