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rebar/test/rebar_xref_eunit.erl
Dennis Docter 61e79afd80 Add standard xref checks and improved suppression 
* Allow the following predefined analyses :
   undefined_function_calls, undefined_functions, locals_not_used,
   exports_not_used, deprecated_function_calls, deprecated_functions

* Trap some possible errors in case module information is not
    available

* ignore_xref works on all checks and can take {M,F,A} tuples.
  (Automatic behaviour export suppression still only works on
  exports_not_used)
2013-01-30 15:26:01 +01:00

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-module(rebar_xref_eunit).
-compile(export_all).
-include_lib("eunit/include/eunit.hrl").
-define(REBAR_SCRIPT, "../rebar").
-define(TMP_DIR, "tmp_xref_eunit/").
xref_test_() ->
{"Test the various xref warnings",
setup, fun() -> setup_project(false), rebar("compile"), rebar("skip_deps=true xref") end,
fun teardown/1,
fun(RebarOut) ->
[
{"Undefined function", ?_assert(string:str(RebarOut,
"myapp_somemod:notavailable/1 is undefined function") =/= 0)},
{"Undefined function call", ?_assert(string:str(RebarOut,
"myapp_othermod:somefunc/0 calls undefined function myapp_somemod:notavailable/1") =/= 0)},
{"Deprecated function", ?_assert(string:str(RebarOut,
"myapp_mymod:fdeprecated/0 is deprecated function") =/= 0)},
{"Deprecated function call", ?_assert(string:str(RebarOut,
"myapp_othermod:somefunc/0 calls deprecated function myapp_mymod:fdeprecated/0") =/= 0)},
{"Unused local", ?_assert(string:str(RebarOut,
"myapp_mymod:localfunc2/0 is unused local function") =/= 0)},
{"Unused export 1", ?_assert(string:str(RebarOut,
"myapp_behaviour1:behaviour_info/1 is unused export") =/= 0)},
{"Unused export 2", ?_assert(string:str(RebarOut,
"myapp_behaviour2:behaviour_info/1 is unused export") =/= 0)},
{"Unused export 3", ?_assert(string:str(RebarOut,
"myapp_mymod:other2/1 is unused export") =/= 0)},
{"Unused export 4", ?_assert(string:str(RebarOut,
"myapp_othermod:somefunc/0 is unused export") =/= 0)},
{"Suppressed behaviour export 1", ?_assert(string:str(RebarOut,
"myapp_mymod:bh1_a/1 is unused export") =:= 0)},
{"Suppressed behaviour export 2", ?_assert(string:str(RebarOut,
"myapp_mymod:bh1_b/1 is unused export") =:= 0)},
{"Suppressed behaviour export 3", ?_assert(string:str(RebarOut,
"myapp_mymod:bh2_a/1 is unused export") =:= 0)},
{"Suppressed behaviour export 4", ?_assert(string:str(RebarOut,
"myapp_mymod:bh2_b/1 is unused export") =:= 0)}
]
end}.
xref_ignore_test_() ->
{"Test the suppression of xref warnings",
setup, fun() -> setup_project(ignore_xref), rebar("compile"), rebar("skip_deps=true xref") end,
fun teardown/1,
fun(RebarOut) ->
[
{"Undefined function can not be suppressed.", ?_assert(string:str(RebarOut,
"myapp_somemod:notavailable/1 is undefined function") =/= 0)},
{"Supppressed undefined function call", ?_assert(string:str(RebarOut,
"myapp_othermod:somefunc/0 calls undefined function myapp_somemod:notavailable/1") =:= 0)},
{"Supppressed deprecated function", ?_assert(string:str(RebarOut,
"myapp_mymod:fdeprecated/0 is deprecated function") =:= 0)},
{"Supppressed deprecated function call", ?_assert(string:str(RebarOut,
"myapp_othermod:somefunc/0 calls deprecated function myapp_mymod:fdeprecated/0") =:= 0)},
{"Supppressed unused local", ?_assert(string:str(RebarOut,
"myapp_mymod:localfunc2/0 is unused local function") =:= 0)},
{"Supppressed unused export 1", ?_assert(string:str(RebarOut,
"myapp_behaviour1:behaviour_info/1 is unused export") =:= 0)},
{"Supppressed unused export 2", ?_assert(string:str(RebarOut,
"myapp_behaviour2:behaviour_info/1 is unused export") =:= 0)},
{"Supppressed unused export 3", ?_assert(string:str(RebarOut,
"myapp_mymod:other2/1 is unused export") =:= 0)},
{"Supppressed unused export 4", ?_assert(string:str(RebarOut,
"myapp_othermod:somefunc/0 is unused export") =:= 0)},
{"Suppressed behaviour export 1", ?_assert(string:str(RebarOut,
"myapp_mymod:bh1_a/1 is unused export") =:= 0)},
{"Suppressed behaviour export 2", ?_assert(string:str(RebarOut,
"myapp_mymod:bh1_b/1 is unused export") =:= 0)},
{"Suppressed behaviour export 3", ?_assert(string:str(RebarOut,
"myapp_mymod:bh2_a/1 is unused export") =:= 0)},
{"Suppressed behaviour export 4", ?_assert(string:str(RebarOut,
"myapp_mymod:bh2_b/1 is unused export") =:= 0)}
]
end}.
%% ====================================================================
%% Setup and Teardown
%% ====================================================================
-define(myapp_behaviour1,
["-module(myapp_behaviour1).\n",
"-export([behaviour_info/1]).\n"]).
-define(myapp_behaviour1_body,
["behaviour_info(callbacks) -> [{bh1_a,1},{bh1_b,1}];\n",
"behaviour_info(_Other) -> undefined.\n"]).
-define(myapp_behaviour1_ignorexref,
["-ignore_xref({behaviour_info,1}).\n"]).
-define(myapp_behaviour2,
["-module(myapp_behaviour2).\n",
"-export([behaviour_info/1]).\n"]).
-define(myapp_behaviour2_body,
["behaviour_info(callbacks) -> [{bh2_a,1},{bh2_b,1}];\n",
"behaviour_info(_Other) -> undefined.\n"]).
-define(myapp_behaviour2_ignorexref,
["-ignore_xref({behaviour_info,1}).\n"]).
-define(myapp_mymod,
["-module(myapp_mymod).\n",
"-export([bh1_a/1,bh1_b/1,bh2_a/1,bh2_b/1,other1/1,other2/1,fdeprecated/0]).\n",
"-behaviour(myapp_behaviour1).\n", % 2 behaviours
"-behaviour(myapp_behaviour2).\n",
"-deprecated({fdeprecated,0}).\n"]). % deprecated function
-define(myapp_mymod_body,
["bh1_a(A) -> localfunc1(bh1_a, A).\n", % behaviour functions
"bh1_b(A) -> localfunc1(bh1_b, A).\n",
"bh2_a(A) -> localfunc1(bh2_a, A).\n",
"bh2_b(A) -> localfunc1(bh2_b, A).\n",
"other1(A) -> localfunc1(other1, A).\n", % regular exported functions
"other2(A) -> localfunc1(other2, A).\n",
"localfunc1(A, B) -> {A, B}.\n", % used local
"localfunc2() -> ok.\n", % unused local
"fdeprecated() -> ok.\n" % deprecated function
]).
-define(myapp_mymod_ignorexref,
["-ignore_xref([{other2,1},{localfunc2,0},{fdeprecated,0}]).\n"]).
-define(myapp_othermod,
["-module(myapp_othermod).\n",
"-export([somefunc/0]).\n"]).
-define(myapp_othermod_body,
["somefunc() ->\n",
" myapp_mymod:other1(arg),\n",
" myapp_somemod:notavailable(arg),\n",
" myapp_mymod:fdeprecated().\n"
]).
-define(myapp_othermod_ignorexref,
["-ignore_xref([{myapp_somemod,notavailable,1},{somefunc,0}]).\n",
"-ignore_xref({myapp_mymod,fdeprecated,0}).\n"]).
-define(myapp_rebarconfig,
["{erl_opts, [debug_info]}.\n",
"{xref_checks, [deprecated_function_calls,deprecated_functions,\n",
" undefined_function_calls,undefined_functions,\n",
" exports_not_used,locals_not_used]}.\n"
]).
setup_environment() ->
ok = file:make_dir(?TMP_DIR),
prepare_rebar_script(),
ok = file:set_cwd(?TMP_DIR).
prepare_project() ->
setup_environment(),
rebar("create-app appid=myapp"),
ok = file:make_dir("ebin").
setup_project(ignore_xref) ->
prepare_project(),
ok = file:write_file("src/myapp_behaviour1.erl", ?myapp_behaviour1 ++ ?myapp_behaviour1_ignorexref ++ ?myapp_behaviour1_body),
ok = file:write_file("src/myapp_behaviour2.erl", ?myapp_behaviour2 ++ ?myapp_behaviour2_ignorexref++ ?myapp_behaviour2_body),
ok = file:write_file("src/myapp_mymod.erl", ?myapp_mymod ++ ?myapp_mymod_ignorexref ++ ?myapp_mymod_body),
ok = file:write_file("src/myapp_othermod.erl", ?myapp_othermod ++ ?myapp_othermod_ignorexref ++ ?myapp_othermod_body),
ok = file:write_file("rebar.config", ?myapp_rebarconfig);
setup_project(_) ->
prepare_project(),
ok = file:write_file("src/myapp_behaviour1.erl", ?myapp_behaviour1 ++ ?myapp_behaviour1_body),
ok = file:write_file("src/myapp_behaviour2.erl", ?myapp_behaviour2 ++ ?myapp_behaviour2_body),
ok = file:write_file("src/myapp_mymod.erl", ?myapp_mymod ++ ?myapp_mymod_body),
ok = file:write_file("src/myapp_othermod.erl", ?myapp_othermod ++ ?myapp_othermod_body),
ok = file:write_file("rebar.config", ?myapp_rebarconfig).
teardown(_) ->
ok = file:set_cwd(".."),
ok = remove_tmp_dir().
remove_tmp_dir() ->
ok = rebar_file_utils:rm_rf(?TMP_DIR).
%% ====================================================================
%% Helper Functions
%% ====================================================================
prepare_rebar_script() ->
Rebar = ?TMP_DIR ++ "rebar",
{ok, _} = file:copy(?REBAR_SCRIPT, Rebar),
case os:type() of
{unix, _} ->
[] = os:cmd("chmod u+x " ++ Rebar);
{win32, _} ->
{ok, _} = file:copy(?REBAR_SCRIPT ++ ".bat",
?TMP_DIR ++ "rebar.bat")
end.
rebar() ->
rebar([]).
rebar(Args) when is_list(Args) ->
Out = os:cmd(filename:nativename("./rebar") ++ " " ++ Args),
%% ?debugMsg("**** Begin"), ?debugMsg(Out), ?debugMsg("**** End"),
Out.
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