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authorBjörn-Egil Dahlberg <egil@erlang.org>2013-10-03 00:35:45 +0200
committerBjörn-Egil Dahlberg <egil@erlang.org>2014-01-28 15:56:29 +0100
commit97d087263e1836f3efb4267e3990219fe3e3c045 (patch)
treefe7034a755d909f120cde6c026ddd3408a2b0b1e /erts
parenteb218eb375d353bcd78ae895805d1d45f927b3a9 (diff)
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erts: Add Map tests for hashing and external format
- Update map_SUITE with hash and encode tests - Update map_SUITE with external format decode tests - Update map_SUITE with map:to_list/1 and map:from_list/1 tests
Diffstat (limited to 'erts')
-rw-r--r--erts/emulator/test/map_SUITE.erl143
1 files changed, 140 insertions, 3 deletions
diff --git a/erts/emulator/test/map_SUITE.erl b/erts/emulator/test/map_SUITE.erl
index 81d39fc97a..27f35ccd29 100644
--- a/erts/emulator/test/map_SUITE.erl
+++ b/erts/emulator/test/map_SUITE.erl
@@ -30,7 +30,7 @@
t_map_sort_literals/1,
t_size/1, t_map_size/1,
- %% BIFs
+ %% Specific Map BIFs
t_bif_map_get/1,
t_bif_map_find/1,
t_bif_map_is_key/1,
@@ -38,7 +38,13 @@
t_bif_map_new/1,
t_bif_map_put/1,
t_bif_map_remove/1,
- t_bif_map_values/1
+ t_bif_map_values/1,
+ t_bif_map_to_list/1,
+ t_bif_map_from_list/1,
+
+ %% erlang
+ t_erlang_hash/1,
+ t_map_encode_decode/1
]).
-include_lib("test_server/include/test_server.hrl").
@@ -57,7 +63,11 @@ all() -> [
%% Specific Map BIFs
t_bif_map_get,t_bif_map_find,t_bif_map_is_key,
t_bif_map_keys,t_bif_map_new,t_bif_map_put,
- t_bif_map_remove,t_bif_map_values
+ t_bif_map_remove,t_bif_map_values,
+ t_bif_map_to_list, t_bif_map_from_list,
+
+ %% erlang
+ t_erlang_hash, t_map_encode_decode
].
groups() -> [].
@@ -562,7 +572,134 @@ t_bif_map_values(Config) when is_list(Config) ->
{'EXIT',{badarg,[{map,values,_,_}|_]}} = (catch map:values(atom)),
{'EXIT',{badarg,[{map,values,_,_}|_]}} = (catch map:values([])),
{'EXIT',{badarg,[{map,values,_,_}|_]}} = (catch map:values(<<>>)),
+ ok.
+
+t_erlang_hash(Config) when is_list(Config) ->
+
+ 39679005 = erlang:phash2(#{}),
+ 106033788 = erlang:phash2(#{ a => 1, "a" => 2, <<"a">> => 3, {a,b} => 4 }),
+ 119861073 = erlang:phash2(#{ 1 => a, 2 => "a", 3 => <<"a">>, 4 => {a,b} }),
+ 87559846 = erlang:phash2(#{ 1 => a }),
+ 76038729 = erlang:phash2(#{ a => 1 }),
+
+ M0 = #{ a => 1, "key" => <<"value">> },
+ M1 = map:remove("key",M0),
+ M2 = M1#{ "key" => <<"value">> },
+
+ 67968757 = erlang:phash2(M0),
+ 76038729 = erlang:phash2(M1),
+ 67968757 = erlang:phash2(M2),
+ ok.
+
+t_map_encode_decode(Config) when is_list(Config) ->
+ <<131,116,0,0,0,0>> = erlang:term_to_binary(#{}),
+ Pairs = [
+ {a,b},{"key","values"},{<<"key">>,<<"value">>},
+ {1,b},{[atom,1],{<<"wat">>,1,2,3}},
+ {aa,"values"},
+ {1 bsl 64 + (1 bsl 50 - 1), sc1},
+ {99, sc2},
+ {1 bsl 65 + (1 bsl 51 - 1), sc3},
+ {88, sc4},
+ {1 bsl 66 + (1 bsl 52 - 1), sc5},
+ {77, sc6},
+ {1 bsl 67 + (1 bsl 53 - 1), sc3},
+ {75, sc6}, {-10,sc8},
+ {<<>>, sc9}, {3.14158, sc10},
+ {[3.14158], sc11}, {more_atoms, sc12},
+ {{more_tuples}, sc13}, {self(), sc14},
+ {{},{}},{[],[]}
+ ],
+ ok = map_encode_decode_and_match(Pairs,[],#{}),
+
+ %% error cases
+ %% template: <<131,116,0,0,0,2,100,0,1,97,100,0,1,98,97,1,97,1>>
+ %% which is: #{ a=>1, b=>1 }
+
+ %% order violation
+ %% literally #{ b=>1, a=>1 } in the internal order (bad)
+ {'EXIT',{badarg,[{_,_,_,_}|_]}} = (catch
+ erlang:binary_to_term(<<131,116,0,0,0,2,100,0,1,98,100,0,1,97,97,1,97,1>>)),
+
+ %% uniqueness violation
+ %% literally #{ a=>1, a=>1 }
+ {'EXIT',{badarg,[{_,_,_,_}|_]}} = (catch
+ erlang:binary_to_term(<<131,116,0,0,0,2,100,0,1,97,100,0,1,97,97,1,97,1>>)),
+
+ %% bad size (too large)
+ {'EXIT',{badarg,[{_,_,_,_}|_]}} = (catch
+ erlang:binary_to_term(<<131,116,0,0,0,12,100,0,1,97,100,0,1,98,97,1,97,1>>)),
+
+ %% bad size (too small) .. should fail just truncate it .. weird.
+ %% possibly change external format so truncated will be #{a:=1}
+ #{ a:=b } =
+ erlang:binary_to_term(<<131,116,0,0,0,1,100,0,1,97,100,0,1,98,97,1,97,1>>),
+
+ ok.
+
+map_encode_decode_and_match([{K,V}|Pairs], EncodedPairs, M0) ->
+ M1 = map:put(K,V,M0),
+ B0 = erlang:term_to_binary(M1),
+ Ls = lists:sort([{K, erlang:term_to_binary(K), erlang:term_to_binary(V)}|EncodedPairs]),
+ %% sort Ks and Vs according to term spec, then match it
+ ok = match_encoded_map(B0, length(Ls), [Kbin||{_,Kbin,_}<-Ls] ++ [Vbin||{_,_,Vbin}<-Ls]),
+ %% decode and match it
+ M1 = erlang:binary_to_term(B0),
+ map_encode_decode_and_match(Pairs,Ls,M1);
+map_encode_decode_and_match([],_,_) -> ok.
+
+match_encoded_map(<<131,116,Size:32,Encoded/binary>>,Size,Items) ->
+ match_encoded_map(Encoded,Items);
+match_encoded_map(_,_,_) -> no_match_size.
+
+match_encoded_map(<<>>,[]) -> ok;
+match_encoded_map(Bin,[<<131,Item/binary>>|Items]) ->
+ Size = erlang:byte_size(Item),
+ <<EncodedTerm:Size/binary, Bin1/binary>> = Bin,
+ EncodedTerm = Item, %% Asssert
+ match_encoded_map(Bin1,Items).
+
+
+t_bif_map_to_list(Config) when is_list(Config) ->
+ [] = map:to_list(#{}),
+ [{a,1},{b,2}] = map:to_list(#{a=>1,b=>2}),
+ [{a,1},{b,2},{c,3}] = map:to_list(#{c=>3,a=>1,b=>2}),
+ [{a,1},{b,2},{g,3}] = map:to_list(#{g=>3,a=>1,b=>2}),
+ [{a,1},{b,2},{g,3},{"c",4}] = map:to_list(#{g=>3,a=>1,b=>2,"c"=>4}),
+ [{3,v2},{hi,v4},{{hi,3},v5},{"hi",v3},{<<"hi">>,v1}] = map:to_list(#{
+ <<"hi">>=>v1,3=>v2,"hi"=>v3,hi=>v4,{hi,3}=>v5}),
+
+ [{3,v7},{hi,v9},{{hi,3},v10},{"hi",v8},{<<"hi">>,v6}] = map:to_list(#{
+ <<"hi">>=>v1,3=>v2,"hi"=>v3,hi=>v4,{hi,3}=>v5,
+ <<"hi">>=>v6,3=>v7,"hi"=>v8,hi=>v9,{hi,3}=>v10}),
+
+ %% error cases
+ {'EXIT', {badarg,_}} = (catch map:to_list(id(a))),
+ {'EXIT', {badarg,_}} = (catch map:to_list(id(42))),
+ ok.
+
+
+t_bif_map_from_list(Config) when is_list(Config) ->
+ #{} = map:from_list([]),
+ A = map:from_list([]),
+ 0 = erlang:map_size(A),
+
+ #{a:=1,b:=2} = map:from_list([{a,1},{b,2}]),
+ #{c:=3,a:=1,b:=2} = map:from_list([{a,1},{b,2},{c,3}]),
+ #{g:=3,a:=1,b:=2} = map:from_list([{a,1},{b,2},{g,3}]),
+
+ #{a:=2} = map:from_list([{a,1},{a,3},{a,2}]),
+
+ #{ <<"hi">>:=v1,3:=v3,"hi":=v6,hi:=v4,{hi,3}:=v5} =
+ map:from_list([{3,v3},{"hi",v6},{hi,v4},{{hi,3},v5},{<<"hi">>,v1}]),
+
+ #{<<"hi">>:=v6,3:=v8,"hi":=v11,hi:=v9,{hi,3}:=v10} =
+ map:from_list([ {{hi,3},v3}, {"hi",v0},{3,v1}, {<<"hi">>,v4}, {hi,v2},
+ {<<"hi">>,v6}, {{hi,3},v10},{"hi",v11}, {hi,v9}, {3,v8}]),
+ %% error cases
+ {'EXIT', {badarg,_}} = (catch map:from_list(id(a))),
+ {'EXIT', {badarg,_}} = (catch map:from_list(id(42))),
ok.