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ups_tests.erl
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ups_tests.erl
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%%
%% Copyright (C) 2005-2015 Christoph Rupp (chris@crupp.de).
%%
%% This program is free software: you can redistribute it and/or modify
%% it under the terms of the GNU General Public License as published by
%% the Free Software Foundation, either version 3 of the License, or
%% (at your option) any later version.
%%
%% This program is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
%% GNU General Public License for more details.
%%
%% You should have received a copy of the GNU General Public License
%% along with this program. If not, see <http://www.gnu.org/licenses/>.
-module(ups_tests).
-ifdef(TEST).
-include_lib("eunit/include/eunit.hrl").
-include("include/ups.hrl").
run_test_() ->
{timeout, 60, [
?_test(db1()),
?_test(env1()),
?_test(txn1()),
?_test(cursor1()),
?_test(uqi1())
]}.
%%
%% This test is similar to sample/db1.c - it demonstrates the basic upscaledb
%% flow (inserting, deleting and looking up key/value pairs).
%%
db1() ->
%% First step: create a new Environment
{ok, Env1} = ups:env_create("test.db"),
%% Then create a Database in this Environment with the name '1'
{ok, Db1} = ups:env_create_db(Env1, 1),
%% Now insert 10 key/value pairs
lists:foreach(fun(I) -> ok = ups:db_insert(Db1,
list_to_binary(integer_to_list(I)),
<<"Record">>)
end, lists:seq(1, 10)),
%% Close the Database and the Environment
ok = ups:db_close(Db1),
ok = ups:env_close(Env1),
%% Now reopen both
{ok, Env2} = ups:env_open("test.db"),
{ok, Db2} = ups:env_open_db(Env2, 1),
%% Now lookup those keys
lists:foreach(fun(I) -> ?assertEqual({ok, <<"Record">>}, ups:db_find(Db2,
list_to_binary(integer_to_list(I))))
end, lists:seq(1, 10)),
%% Delete them
lists:foreach(fun(I) -> ok = ups:db_erase(Db2,
list_to_binary(integer_to_list(I)))
end, lists:seq(1, 10)),
%% Look them up again - must fail
lists:foreach(fun(I) -> ?assertEqual({error, key_not_found}, ups:db_find(Db2,
list_to_binary(integer_to_list(I))))
end, lists:seq(1, 10)),
%% and close Database and Environment again
ok = ups:db_close(Db2),
ok = ups:env_close(Env2),
true.
%%
%% This test demonstrates how to use multiple Databases in an Environment.
%%
env1() ->
%% First step: create a new Environment
{ok, Env1} = ups:env_create("test.db"),
%% Then create a few Databases in this Environment, each with an unique name
{ok, Db1} = ups:env_create_db(Env1, 1),
{ok, Db2} = ups:env_create_db(Env1, 2),
{ok, Db3} = ups:env_create_db(Env1, 3),
%% We could now insert or delete or lookup key/value pairs in any of these
%% Databases...
%%
%% Close the Databases
ok = ups:db_close(Db1),
ok = ups:db_close(Db2),
ok = ups:db_close(Db3),
%% Now we could delete Database #1
ok = ups:env_erase_db(Env1, 1),
%% ... or rename the Database #2 as #5
ok = ups:env_rename_db(Env1, 2, 5),
%% Close the Environment
ok = ups:env_close(Env1),
true.
%%
%% This test demonstrates how to use Transactions. It begins, aborts and
%% commits various Transactions.
%%
txn1() ->
%% First step: create a new Environment, with Transactions enabled
{ok, Env1} = ups:env_create("test.db", [enable_transactions]),
%% Then create a Databases in this Environment
{ok, Db1} = ups:env_create_db(Env1, 1),
%% Start a new Transaction
{ok, Txn1} = ups:txn_begin(Env1),
%% Insert a few key/value pair in that Transaction
ok = ups:db_insert(Db1, Txn1, <<"foo1">>, <<"value1">>),
ok = ups:db_insert(Db1, Txn1, <<"foo2">>, <<"value2">>),
ok = ups:db_insert(Db1, Txn1, <<"foo3">>, <<"value3">>),
%% Commit the Transaction
ok = ups:txn_commit(Txn1),
%% Now start another Transaction, again insert a few values but then
%% *abort* this Transaction
{ok, Txn2} = ups:txn_begin(Env1),
ok = ups:db_insert(Db1, Txn2, <<"bar1">>, <<"value1">>),
ok = ups:db_insert(Db1, Txn2, <<"bar2">>, <<"value2">>),
ok = ups:db_insert(Db1, Txn2, <<"bar3">>, <<"value3">>),
ok = ups:txn_abort(Txn2),
%% Now verify that Txn1 was committed, Txn2 was aborted
?assertEqual({ok, <<"value1">>}, ups:db_find(Db1, <<"foo1">>)),
?assertEqual({ok, <<"value2">>}, ups:db_find(Db1, <<"foo2">>)),
?assertEqual({ok, <<"value3">>}, ups:db_find(Db1, <<"foo3">>)),
?assertEqual({error, key_not_found}, ups:db_find(Db1, <<"bar1">>)),
?assertEqual({error, key_not_found}, ups:db_find(Db1, <<"bar2">>)),
?assertEqual({error, key_not_found}, ups:db_find(Db1, <<"bar3">>)),
%% Close the Database and the Environment
ok = ups:db_close(Db1),
ok = ups:env_close(Env1),
true.
%%
%% This test demonstrates how to use Cursors. It inserts key/value pairs and
%% then traverses from both directions.
%%
cursor1() ->
%% First step: create a new Environment
{ok, Env1} = ups:env_create("test.db", [enable_transactions]),
%% Then create a Databases in this Environment
{ok, Db1} = ups:env_create_db(Env1, 1),
%% And a Cursor for this Database
{ok, Cursor1} = ups:cursor_create(Db1),
%% Insert a few key/value pairs with this Cursor (we could use
%% ups:db_insert() as well)
ok = ups:cursor_insert(Cursor1, <<"foo1">>, <<"value1">>),
ok = ups:cursor_insert(Cursor1, <<"foo2">>, <<"value2">>),
ok = ups:cursor_insert(Cursor1, <<"foo3">>, <<"value3">>),
ok = ups:cursor_insert(Cursor1, <<"foo4">>, <<"value4">>),
ok = ups:cursor_insert(Cursor1, <<"foo5">>, <<"value5">>),
%% Now traverse from beginning to the end
{ok, <<"foo1">>, <<"value1">>} = ups:cursor_move(Cursor1, [first]),
{ok, <<"foo2">>, <<"value2">>} = ups:cursor_move(Cursor1, [next]),
{ok, <<"foo3">>, <<"value3">>} = ups:cursor_move(Cursor1, [next]),
{ok, <<"foo4">>, <<"value4">>} = ups:cursor_move(Cursor1, [next]),
{ok, <<"foo5">>, <<"value5">>} = ups:cursor_move(Cursor1, [next]),
{error, key_not_found} = ups:cursor_move(Cursor1, [next]),
%% and backwards
{ok, <<"foo5">>, <<"value5">>} = ups:cursor_move(Cursor1, [last]),
{ok, <<"foo4">>, <<"value4">>} = ups:cursor_move(Cursor1, [previous]),
{ok, <<"foo3">>, <<"value3">>} = ups:cursor_move(Cursor1, [previous]),
{ok, <<"foo2">>, <<"value2">>} = ups:cursor_move(Cursor1, [previous]),
{ok, <<"foo1">>, <<"value1">>} = ups:cursor_move(Cursor1, [previous]),
{error, key_not_found} = ups:cursor_move(Cursor1, [previous]),
%% Get the record size
{ok, <<"foo1">>, <<"value1">>} = ups:cursor_move(Cursor1, [first]),
{ok, 6} = ups:cursor_get_record_size(Cursor1),
%% "foo1" has one record assigned
{ok, 1} = ups:cursor_get_duplicate_count(Cursor1),
%% Now delete "foo1"
ok = ups:cursor_erase(Cursor1),
{ok, <<"foo2">>, <<"value2">>} = ups:cursor_move(Cursor1, [first]),
%% Clean up
ok = ups:cursor_close(Cursor1),
ok = ups:db_close(Db1),
ok = ups:env_close(Env1),
true.
%%
%% This test performs a couple of UQI queries.
%%
uqi1() ->
%% First step: create a new Environment
{ok, Env1} = ups:env_create("test.db"),
%% Then create a Database in this Environment with the name '1', storing
%% 32bit integers as records
{ok, Db1} = ups:env_create_db(Env1, 1, [], [{record_type, ?UPS_TYPE_UINT32}]),
%% Now insert 10000 key/value pairs
lists:foreach(fun(I) ->
V = 50 + I rem 30,
ok = ups:db_insert(Db1, <<I:32>>, <<V:32>>)
end, lists:seq(1, 10000)),
%% Retrieve the maximum record value
{ok, Result1} = ups:uqi_select_range(Env1, "MAX($record) FROM DATABASE 1"),
?assertEqual({ok, 1}, ups:uqi_result_get_row_count(Result1)),
?assertEqual({ok, 0}, ups:uqi_result_get_key_type(Result1)),
?assertEqual({ok, 7}, ups:uqi_result_get_record_type(Result1)),
?assertEqual({ok,<<0,0,0,79>>}, ups:uqi_result_get_record(Result1, 0)),
ok = ups:uqi_result_close(Result1),
%% Retrieve the minimum record value
{ok, Result2} = ups:uqi_select_range(Env1, "MIN($record) FROM DATABASE 1"),
?assertEqual({ok, 1}, ups:uqi_result_get_row_count(Result2)),
?assertEqual({ok, 0}, ups:uqi_result_get_key_type(Result2)),
?assertEqual({ok, 7}, ups:uqi_result_get_record_type(Result2)),
?assertEqual({ok,<<0,0,0,50>>}, ups:uqi_result_get_record(Result2, 0)),
ok = ups:uqi_result_close(Result2),
ok = ups:db_close(Db1),
ok = ups:env_close(Env1),
true.
-endif.