diff options
Diffstat (limited to 'lib/compiler/test/warnings_SUITE.erl')
| -rw-r--r-- | lib/compiler/test/warnings_SUITE.erl | 79 |
1 files changed, 70 insertions, 9 deletions
diff --git a/lib/compiler/test/warnings_SUITE.erl b/lib/compiler/test/warnings_SUITE.erl index be0348a92d..d0b7c71be8 100644 --- a/lib/compiler/test/warnings_SUITE.erl +++ b/lib/compiler/test/warnings_SUITE.erl @@ -39,7 +39,7 @@ guard/1,bad_arith/1,bool_cases/1,bad_apply/1, files/1,effect/1,bin_opt_info/1,bin_construction/1, comprehensions/1,maps/1,redundant_boolean_clauses/1, - latin1_fallback/1]). + latin1_fallback/1,underscore/1,no_warnings/1]). % Default timetrap timeout (set in init_per_testcase). -define(default_timeout, ?t:minutes(2)). @@ -64,7 +64,8 @@ groups() -> [pattern,pattern2,pattern3,pattern4,guard, bad_arith,bool_cases,bad_apply,files,effect, bin_opt_info,bin_construction,comprehensions,maps, - redundant_boolean_clauses,latin1_fallback]}]. + redundant_boolean_clauses,latin1_fallback, + underscore,no_warnings]}]. init_per_suite(Config) -> Config. @@ -284,7 +285,7 @@ bad_arith(Config) when is_list(Config) -> {10,sys_core_fold,{eval_failure,badarith}}, {15,sys_core_fold,{eval_failure,badarith}} ] }}], - ?line [] = run(Config, Ts), + [] = run(Config, Ts), ok. bool_cases(Config) when is_list(Config) -> @@ -578,11 +579,11 @@ maps(Config) when is_list(Config) -> <<" t() -> M = {a,[]}, - {'EXIT',{badarg,_}} = (catch(M#{ a => 1})), + {'EXIT',{badarg,_}} = (catch(M#{ a => 1 })), ok. ">>, [], - {warnings,[{4,v3_kernel,bad_map}]}}, + {warnings,[{4,sys_core_fold,{eval_failure,badarg}}]}}, {bad_map_src2, <<" t() -> @@ -592,7 +593,7 @@ maps(Config) when is_list(Config) -> id(I) -> I. ">>, [inline], - {warnings,[{4,v3_kernel,bad_map}]}}, + []}, {bad_map_src3, <<" t() -> @@ -678,6 +679,66 @@ latin1_fallback(Conf) when is_list(Conf) -> ok. +underscore(Config) when is_list(Config) -> + S0 = <<"f(A) -> + _VAR1 = <<A>>, + _VAR2 = {ok,A}, + _VAR3 = [A], + ok. + g(A) -> + _VAR1 = A/0, + _VAR2 = date(), + ok. + h() -> + _VAR1 = fun() -> ok end, + ok. + i(A) -> + _VAR1 = #{A=>42}, + ok. + ">>, + Ts0 = [{underscore0, + S0, + [], + {warnings,[{2,sys_core_fold,useless_building}, + {3,sys_core_fold,useless_building}, + {4,sys_core_fold,useless_building}, + {7,sys_core_fold,result_ignored}, + {8,sys_core_fold,{no_effect,{erlang,date,0}}}, + {11,sys_core_fold,useless_building}, + {14,sys_core_fold,useless_building} + ]}}], + [] = run(Config, Ts0), + + %% Replace all "_VAR<digit>" variables with a plain underscore. + %% Now there should be no warnings. + S1 = re:replace(S0, "_VAR\\d+", "_", [global]), + io:format("~s\n", [S1]), + Ts1 = [{underscore1,S1,[],[]}], + [] = run(Config, Ts1), + + ok. + +no_warnings(Config) when is_list(Config) -> + Ts = [{no_warnings, + <<"-record(r, {s=ordsets:new(),a,b}). + + a() -> + R = #r{}, %No warning expected. + {R#r.a,R#r.b}. + + b(X) -> + T = true, + Var = [X], %No warning expected. + case T of + false -> Var; + true -> [] + end. + ">>, + [], + []}], + run(Config, Ts), + ok. + %%% %%% End of test cases. %%% @@ -699,10 +760,10 @@ run(Config, Tests) -> %% Compiles a test module and returns the list of errors and warnings. run_test(Conf, Test0, Warnings) -> - Mod = "warnings_"++test_lib:uniq(), - Filename = Mod ++ ".erl", + Module = "warnings_"++test_lib:uniq(), + Filename = Module ++ ".erl", ?line DataDir = ?privdir, - Test = ["-module(", Mod, "). ", Test0], + Test = ["-module(", Module, "). ", Test0], ?line File = filename:join(DataDir, Filename), ?line Opts = [binary,export_all,return|Warnings], ?line ok = file:write_file(File, Test), |