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-rw-r--r--erts/emulator/test/bif_SUITE.erl70
1 files changed, 69 insertions, 1 deletions
diff --git a/erts/emulator/test/bif_SUITE.erl b/erts/emulator/test/bif_SUITE.erl
index 15c09d9158..b4ef0e6d5a 100644
--- a/erts/emulator/test/bif_SUITE.erl
+++ b/erts/emulator/test/bif_SUITE.erl
@@ -22,12 +22,13 @@
-include("test_server.hrl").
-export([all/1,init_per_testcase/2,fin_per_testcase/2,
+ types/1,
t_list_to_existing_atom/1,os_env/1,otp_7526/1,
binary_to_atom/1,binary_to_existing_atom/1,
atom_to_binary/1,min_max/1]).
all(suite) ->
- [t_list_to_existing_atom,os_env,otp_7526,
+ [types,t_list_to_existing_atom,os_env,otp_7526,
atom_to_binary,binary_to_atom,binary_to_existing_atom,
min_max].
@@ -39,6 +40,73 @@ fin_per_testcase(_Func, Config) ->
Dog=?config(watchdog, Config),
?t:timetrap_cancel(Dog).
+types(Config) when is_list(Config) ->
+ c:l(erl_bif_types),
+ case erlang:function_exported(erl_bif_types, module_info, 0) of
+ false ->
+ %% Fail cleanly.
+ ?line ?t:fail("erl_bif_types not compiled");
+ true ->
+ types_1()
+ end.
+
+types_1() ->
+ ?line List0 = erlang:system_info(snifs),
+
+ %% Ignore missing type information for hipe BIFs.
+ ?line List = [MFA || {M,_,_}=MFA <- List0, M =/= hipe_bifs],
+
+ case [MFA || MFA <- List, not known_types(MFA)] of
+ [] ->
+ types_2(List);
+ BadTypes ->
+ io:put_chars("No type information:\n"),
+ io:format("~p\n", [lists:sort(BadTypes)]),
+ ?line ?t:fail({length(BadTypes),bifs_without_types})
+ end.
+
+types_2(List) ->
+ BadArity = [MFA || {M,F,A}=MFA <- List,
+ begin
+ Types = erl_bif_types:arg_types(M, F, A),
+ length(Types) =/= A
+ end],
+ case BadArity of
+ [] ->
+ types_3(List);
+ [_|_] ->
+ io:put_chars("Bifs with bad arity\n"),
+ io:format("~p\n", [BadArity]),
+ ?line ?t:fail({length(BadArity),bad_arity})
+ end.
+
+types_3(List) ->
+ BadSmokeTest = [MFA || {M,F,A}=MFA <- List,
+ begin
+ try erl_bif_types:type(M, F, A) of
+ Type ->
+ %% Test that type is returned.
+ not erl_types:is_erl_type(Type)
+ catch
+ Class:Error ->
+ io:format("~p: ~p ~p\n",
+ [MFA,Class,Error]),
+ true
+ end
+ end],
+ case BadSmokeTest of
+ [] ->
+ ok;
+ [_|_] ->
+ io:put_chars("Bifs with failing calls to erlang_bif_types:type/3 "
+ "(or with bogus return values):\n"),
+ io:format("~p\n", [BadSmokeTest]),
+ ?line ?t:fail({length(BadSmokeTest),bad_smoke_test})
+ end.
+
+known_types({M,F,A}) ->
+ erl_bif_types:is_known(M, F, A).
+
t_list_to_existing_atom(Config) when is_list(Config) ->
?line all = list_to_existing_atom("all"),
?line ?MODULE = list_to_existing_atom(?MODULE_STRING),