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Pt property based tests #152

Merged
zxq9 merged 2 commits from PT-property-based-tests into master 2019-05-06 21:51:05 +09:00
Conversation 3 Commits 2 Files Changed 5 +146 -30
5 changed files with 146 additions and 30 deletions
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25
quickcheck/aeb_fate_data_tests.erl Normal file
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@ -0,0 +1,25 @@
%%% @author Thomas Arts
%%% @doc Allow to run QuickCheck tests as eunit tests
%%% `rebar3 as eqc eunit --cover`
%%% or `rebar3 as eqc eunit --module=aeb_fate_data`
%%% Note that for obtainign cover file, one needs `rebar3 as eqc cover
%%%
%%%
%%% @end
%%% Created : 13 Dec 2018 by Thomas Arts <thomas@SpaceGrey.lan>
-module(aeb_fate_data_tests).
-include_lib("eunit/include/eunit.hrl").
-compile([export_all, nowarn_export_all]).
-define(EQC_EUNIT(Module, PropName, Ms),
{ atom_to_list(PropName),
{timeout, (Ms * 3) / 1000, ?_assert(eqc:quickcheck(eqc:testing_time(Ms / 1000, Module:PropName())))}}).
quickcheck_test_() ->
{setup, fun() -> eqc:start() end,
[ ?EQC_EUNIT(aefate_eqc, prop_roundtrip, 500),
?EQC_EUNIT(aefate_eqc, prop_format_scan, 2000)
]}.

25
quickcheck/aeb_fate_encoding_tests.erl Normal file
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@ -0,0 +1,25 @@
%%% @author Thomas Arts
%%% @doc Allow to run QuickCheck tests as eunit tests
%%% `rebar3 as eqc eunit --cover`
%%% or `rebar3 as eqc eunit --module=aeb_fate_encoding`
%%% Note that for obtaining cover file, one needs `rebar3 as eqc cover
%%%
%%%
%%% @end
%%% Created : 13 Dec 2018 by Thomas Arts
-module(aeb_fate_encoding_tests).
-include_lib("eunit/include/eunit.hrl").
-compile([export_all, nowarn_export_all]).
-define(EQC_EUNIT(Module, PropName, Ms),
{ atom_to_list(PropName),
{timeout, (Ms * 3) / 1000, ?_assert(eqc:quickcheck(eqc:testing_time(Ms / 1000, Module:PropName())))}}).
quickcheck_test_() ->
{setup, fun() -> eqc:start() end,
[ ?EQC_EUNIT(aefate_type_eqc, prop_roundtrip, 1000),
?EQC_EUNIT(aefate_eqc, prop_serializes, 1000)
]}.

68
quickcheck/aefate_eqc.erl
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@ -1,7 +1,8 @@
%%% @author Thomas Arts
%%% @copyright (C) 2018, Thomas Arts
%%% @doc Use `rebar3 as eqc shell` to run properties in the shell
%%%
%%% We need to be able to generate data that serializes with ?LONG_LIST, ?LONG_TUPLE etc.
%%% In other words make some rather broad terms as well as some deep terms
%%%
%%% @end
%%% Created : 13 Dec 2018 by Thomas Arts <thomas@SpaceGrey.lan>
@ -21,14 +22,6 @@ prop_roundtrip() ->
equals(aeb_fate_encoding:deserialize(Serialized), FateData))
end)).
prop_format() ->
?FORALL(FateData, fate_data(),
?WHENFAIL(eqc:format("Trying to format ~p failed~n",[FateData]),
begin
String = aeb_fate_data:format(FateData),
collect([FateData, unicode:characters_to_binary(String, latin1)], true)
end)).
prop_format_scan() ->
?FORALL(FateData, fate_data(),
?WHENFAIL(eqc:format("Trying to format ~p failed~n", [FateData]),
@ -38,10 +31,28 @@ prop_format_scan() ->
true
end)).
fate_data() ->
?SIZED(Size, ?LET(Data, fate_type(Size, [map]), eqc_symbolic:eval(Data))).
prop_serializes() ->
?FORALL(FateDatas, non_empty(?SIZED(Size, resize(Size div 2, list(fate_data())))),
?WHENFAIL(eqc:format("Trying to serialize/deserialize ~p failed~n", [FateDatas]),
begin
{T1, Binary} =
timer:tc( fun() ->
<< begin B = aeb_fate_encoding:serialize(Data),
<<B/binary>> end || Data <- FateDatas >>
end),
{T2, {FateData, _}} =
timer:tc(fun() -> aeb_fate_encoding:deserialize_one(Binary) end),
measure(binary_size, size(Binary),
measure(encode, T1,
measure(decode, T2,
conjunction([{equal, equals(hd(FateDatas), FateData)},
{size, size(Binary) < 500000}]))))
end)).
fate_type(0, _Options) ->
fate_data() ->
?SIZED(Size, ?LET(Data, fate_data(Size, [map]), eqc_symbolic:eval(Data))).
fate_data(0, _Options) ->
?LAZY(
oneof([fate_integer(),
fate_boolean(),
@ -56,17 +67,16 @@ fate_type(0, _Options) ->
fate_name(),
fate_bits(),
fate_channel()]));
fate_type(Size, Options) ->
?LETSHRINK([Smaller], [?LAZY(fate_type(Size div 5, Options))],
oneof([?LAZY(fate_type(Size - 1, Options)),
?LAZY(fate_list( Smaller )),
?LAZY(fate_tuple( list( Smaller ))),
?LAZY(fate_variant(?LET(L, list( Smaller), list_to_tuple(L))))] ++
fate_data(Size, Options) ->
oneof([?LAZY(fate_data(Size - 1, Options)),
?LAZY(fate_list( fate_data(Size div 5, Options) )),
?LAZY(fate_tuple( list(fate_data(Size div 5, Options)) )),
?LAZY(fate_variant( list(fate_data(Size div 5, Options)))) ] ++
[
?LAZY(fate_map( fate_type(Size div 3, Options -- [map]),
Smaller))
?LAZY(fate_map( fate_data(Size div 8, Options -- [map]),
fate_data(Size div 5, Options)))
|| lists:member(map, Options)
])).
]).
fate_integer() -> {call, aeb_fate_data, make_integer, [oneof([int(), largeint()])]}.
@ -74,7 +84,9 @@ fate_bits() -> {call, aeb_fate_data, make_bits, [oneof([int(), largeint()]
fate_boolean() -> {call, aeb_fate_data, make_boolean, [elements([true, false])]}.
fate_nil() -> {call, aeb_fate_data, make_list, [[]]}.
fate_unit() -> {call, aeb_fate_data, make_unit, []}.
fate_string() -> {call, aeb_fate_data, make_string, [?SUCHTHAT(S, utf8(), [ quote || <<34>> <= S ] == [])]}.
fate_string() -> {call, aeb_fate_data, make_string,
[frequency([{10, non_quote_string()}, {2, list(non_quote_string())},
{1, ?LET(N, choose(64-3, 64+3), vector(N, $a))}])]}.
fate_address() -> {call, aeb_fate_data, make_address, [non_zero_binary(256 div 8)]}.
fate_hash() -> {call, aeb_fate_data, make_hash, [non_zero_binary(32)]}.
fate_signature() -> {call, aeb_fate_data, make_signature, [non_zero_binary(64)]}.
@ -87,12 +99,13 @@ fate_channel() -> {call, aeb_fate_data, make_channel, [non_zero_binary(256 di
fate_tuple(ListGen) ->
{call, aeb_fate_data, make_tuple, [?LET(Elements, ListGen, list_to_tuple(Elements))]}.
fate_variant(TupleGen) ->
?LET({L1, L2, Tuple}, {list(choose(0, 255)), list(choose(0,255)), TupleGen},
{call, aeb_fate_data, make_variant, [L1 ++ [size(Tuple)] ++ L2, length(L1), Tuple]}).
fate_variant(ListGen) ->
?LET({L1, L2, TupleAsList}, {list(choose(0, 255)), list(choose(0,255)), ListGen},
{call, aeb_fate_data, make_variant,
[L1 ++ [length(TupleAsList)] ++ L2, length(L1), list_to_tuple(TupleAsList)]}).
fate_list(Gen) ->
{call, aeb_fate_data, make_list, [oneof([fate_nil(), ?SHRINK(list(Gen), [fate_nil()])])]}.
{call, aeb_fate_data, make_list, [frequency([{20, list(Gen)}, {1, ?LET(N, choose(64-3, 64+3), vector(N, Gen))}])]}.
fate_map(KeyGen, ValGen) ->
{call, aeb_fate_data, make_map, [map(KeyGen, ValGen)]}.
@ -102,5 +115,8 @@ non_zero_binary(N) ->
Bits = N*8,
?SUCHTHAT(Bin, binary(N), begin <<V:Bits>> = Bin, V =/= 0 end).
non_quote_string() ->
?SUCHTHAT(S, utf8(), [ quote || <<34>> <= S ] == []).
char() ->
choose(1, 255).

49
quickcheck/aefate_type_eqc.erl Normal file
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@ -0,0 +1,49 @@
%%% @author Thomas Arts
%%% @doc Use `rebar3 as eqc shell` to run properties in the shell
%%% Properties for testing Fate type representations
%%%
%%% @end
%%% Created : 13 Dec 2018 by Thomas Arts <thomas@SpaceGrey.lan>
-module(aefate_type_eqc).
-include_lib("eqc/include/eqc.hrl").
-compile([export_all, nowarn_export_all]).
prop_roundtrip() ->
?FORALL(FateType, fate_type(),
collect(FateType,
begin
Serialized = aeb_fate_encoding:serialize_type(FateType),
BinSerialized = list_to_binary(Serialized),
?WHENFAIL(eqc:format("Serialized ~p to ~p (~p)~n", [FateType, Serialized, BinSerialized]),
begin
{Type, <<>>} = aeb_fate_encoding:deserialize_type(BinSerialized),
equals(Type, FateType)
end)
end)).
fate_type() ->
?SIZED(Size, fate_type(Size)).
fate_type(0) ->
oneof([integer,
boolean,
address,
hash,
signature,
contract,
oracle,
name,
channel,
bits,
string]);
fate_type(Size) ->
oneof([?LAZY(fate_type(Size div 2)),
{list, ?LAZY(fate_type(Size div 2))},
{tuple, list(?LAZY(fate_type(Size div 2)))},
{variant, list(?LAZY(fate_type(Size div 2)))},
?LETSHRINK([T1, T2], [?LAZY(fate_type(Size div 2)), ?LAZY(fate_type(Size div 2))],
{map, T1, T2})]).

9
src/aeb_fate_data.erl
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@ -24,9 +24,9 @@
-type fate_type_type() :: integer
| boolean
| {list, fate_type()}
| {map, fate_type(), fate_type()}
| {tuple, [fate_type()]}
| {list, fate_type_type()}
| {map, fate_type_type(), fate_type_type()}
| {tuple, [fate_type_type()]}
| address
| hash
| signature
@ -35,7 +35,8 @@
| name
| channel
| bits
| {variant, list()}.
| string
| {variant, [fate_type_type()]}.
-type fate_type() ::