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authorBjörn Gustavsson <[email protected]>2013-02-06 17:36:23 +0100
committerBjörn Gustavsson <[email protected]>2013-02-06 17:36:23 +0100
commit013766c73039ae29e1a83f6d9daf540f11f704ce (patch)
treef74d5201826ac859308aa71ad323d498d89bd003 /lib/stdlib
parent205a535dc9750d3ed1e930b1dd8a1c4084f5f46f (diff)
parentc7f54483cb9e6e20baabdea365efbeda7569c62b (diff)
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Merge branch 'bjorn/stdlib/erl_lint-coverage'
* bjorn/stdlib/erl_lint-coverage: Test calling deprecated or removed functions Test deprecating list_to_atom/1 to cover more code Cover binary syntax errors and warnings Remove unused error message {bittype_mismatch,_,_,_} Remove unused error message for importing an auto-imported BIF Remove the error message for future reserved keyword Test a few more kinds of illegal guard expressions Remove error handling for calling a BIF that is not auto-imported Provoke basic semantic errors to improve test coverage
Diffstat (limited to 'lib/stdlib')
-rw-r--r--lib/stdlib/src/erl_lint.erl19
-rw-r--r--lib/stdlib/test/erl_lint_SUITE.erl112
2 files changed, 108 insertions, 23 deletions
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index deae9640f5..12505b33d1 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -152,8 +152,6 @@ format_error({attribute,A}) ->
io_lib:format("attribute '~w' after function definitions", [A]);
format_error({missing_qlc_hrl,A}) ->
io_lib:format("qlc:q/~w called, but \"qlc.hrl\" not included", [A]);
-format_error({redefine_import,{bif,{F,A},M}}) ->
- io_lib:format("function ~w/~w already auto-imported from ~w", [F,A,M]);
format_error({redefine_import,{{F,A},M}}) ->
io_lib:format("function ~w/~w already imported from ~w", [F,A,M]);
format_error({bad_inline,{F,A}}) ->
@@ -222,8 +220,6 @@ format_error({removed, MFA, String}) when is_list(String) ->
io_lib:format("~s: ~s", [format_mfa(MFA), String]);
format_error({obsolete_guard, {F, A}}) ->
io_lib:format("~p/~p obsolete", [F, A]);
-format_error({reserved_for_future,K}) ->
- io_lib:format("atom ~w: future reserved keyword - rename or quote", [K]);
format_error({too_many_arguments,Arity}) ->
io_lib:format("too many arguments (~w) - "
"maximum allowed is ~w", [Arity,?MAX_ARGUMENTS]);
@@ -236,11 +232,6 @@ format_error({illegal_guard_local_call, {F,A}}) ->
io_lib:format("call to local/imported function ~w/~w is illegal in guard",
[F,A]);
format_error(illegal_guard_expr) -> "illegal guard expression";
-%% --- exports ---
-format_error({explicit_export,F,A}) ->
- io_lib:format("in this release, the call to ~w/~w must be written "
- "like this: erlang:~w/~w",
- [F,A,F,A]);
%% --- records ---
format_error({undefined_record,T}) ->
io_lib:format("record ~w undefined", [T]);
@@ -278,8 +269,6 @@ format_error({variable_in_record_def,V}) ->
%% --- binaries ---
format_error({undefined_bittype,Type}) ->
io_lib:format("bit type ~w undefined", [Type]);
-format_error({bittype_mismatch,T1,T2,What}) ->
- io_lib:format("bit type mismatch (~s) between ~p and ~p", [What,T1,T2]);
format_error(bittype_unit) ->
"a bit unit size must not be specified unless a size is specified too";
format_error(illegal_bitsize) ->
@@ -1798,11 +1787,9 @@ gexpr({call,Line,{atom,_La,F},As}, Vt, St0) ->
%% BifClash - Function called in guard
case erl_internal:guard_bif(F, A) andalso no_guard_bif_clash(St1,{F,A}) of
true ->
- %% Also check that it is auto-imported.
- case erl_internal:bif(F, A) of
- true -> {Asvt,St1};
- false -> {Asvt,add_error(Line, {explicit_export,F,A}, St1)}
- end;
+ %% Assert that it is auto-imported.
+ true = erl_internal:bif(F, A),
+ {Asvt,St1};
false ->
case is_local_function(St1#lint.locals,{F,A}) orelse
is_imported_function(St1#lint.imports,{F,A}) of
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index 564f27a512..36229b6989 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -58,7 +58,8 @@
otp_8051/1,
format_warn/1,
on_load_successful/1, on_load_failing/1,
- too_many_arguments/1
+ too_many_arguments/1,
+ basic_errors/1,bin_syntax_errors/1
]).
% Default timetrap timeout (set in init_per_testcase).
@@ -84,7 +85,7 @@ all() ->
otp_5878, otp_5917, otp_6585, otp_6885, otp_10436, export_all,
bif_clash, behaviour_basic, behaviour_multiple,
otp_7550, otp_8051, format_warn, {group, on_load},
- too_many_arguments].
+ too_many_arguments, basic_errors, bin_syntax_errors].
groups() ->
[{unused_vars_warn, [],
@@ -1351,7 +1352,17 @@ guard(Config) when is_list(Config) ->
(is_record(X, apa)*2)].
">>,
[],
- []}],
+ []},
+ {guard8,
+ <<"t(A) when erlang:is_foobar(A) -> ok;
+ t(A) when A ! ok -> ok;
+ t(A) when A ++ [x] -> ok."
+ >>,
+ [],
+ {errors,[{1,erl_lint,illegal_guard_expr},
+ {2,erl_lint,illegal_guard_expr},
+ {3,erl_lint,illegal_guard_expr}],[]}}
+ ],
?line [] = run(Config, Ts1),
ok.
@@ -1639,6 +1650,7 @@ otp_5276(Config) when is_list(Config) ->
-deprecated([{'_','_',never}]).
-deprecated([{{badly,formed},1}]).
-deprecated([{'_','_',next_major_release}]).
+ -deprecated([{atom_to_list,1}]).
-export([t/0]).
frutt() -> ok.
t() -> ok.
@@ -1649,8 +1661,9 @@ otp_5276(Config) when is_list(Config) ->
{3,erl_lint,{invalid_deprecated,'foo bar'}},
{5,erl_lint,{bad_deprecated,{f,'_'}}},
{8,erl_lint,{invalid_deprecated,{'_','_',never}}},
- {9,erl_lint,{invalid_deprecated,{{badly,formed},1}}}],
- [{12,erl_lint,{unused_function,{frutt,0}}}]}}],
+ {9,erl_lint,{invalid_deprecated,{{badly,formed},1}}},
+ {11,erl_lint,{bad_deprecated,{atom_to_list,1}}}],
+ [{13,erl_lint,{unused_function,{frutt,0}}}]}}],
?line [] = run(Config, Ts),
ok.
@@ -1896,9 +1909,23 @@ otp_5362(Config) when is_list(Config) ->
warn_deprecated_function,
warn_bif_clash]},
{errors,
- [{2,erl_lint,disallowed_nowarn_bif_clash}],[]}}
+ [{2,erl_lint,disallowed_nowarn_bif_clash}],[]}},
- ],
+ {call_deprecated_function,
+ <<"t(X) -> erlang:hash(X, 2000).">>,
+ [],
+ {warnings,
+ [{1,erl_lint,{deprecated,{erlang,hash,2},
+ {erlang,phash2,2},"in a future release"}}]}},
+
+ {call_removed_function,
+ <<"t(X) -> regexp:match(X).">>,
+ [],
+ {warnings,
+ [{1,erl_lint,{removed,{regexp,match,1},
+ "removed in R15; use the re module instead"}}]}}
+
+ ],
?line [] = run(Config, Ts),
ok.
@@ -2971,6 +2998,77 @@ too_many_arguments(Config) when is_list(Config) ->
ok.
+%% Test some basic errors to improve coverage.
+basic_errors(Config) ->
+ Ts = [{redefine_module,
+ <<"-module(redefine_module).">>,
+ [],
+ {errors,[{1,erl_lint,redefine_module}],[]}},
+
+ {attr_after_function,
+ <<"f() -> ok.
+ -attr(x).">>,
+ [],
+ {errors,[{2,erl_lint,{attribute,attr}}],[]}},
+
+ {redefine_function,
+ <<"f() -> ok.
+ f() -> ok.">>,
+ [],
+ {errors,[{2,erl_lint,{redefine_function,{f,0}}}],[]}},
+
+ {redefine_record,
+ <<"-record(r, {a}).
+ -record(r, {a}).
+ f(#r{}) -> ok.">>,
+ [],
+ {errors,[{2,erl_lint,{redefine_record,r}}],[]}},
+
+ {illegal_record_info,
+ <<"f1() -> record_info(42, record).
+ f2() -> record_info(shoe_size, record).">>,
+ [],
+ {errors,[{1,erl_lint,illegal_record_info},
+ {2,erl_lint,illegal_record_info}],[]}},
+
+ {illegal_expr,
+ <<"f() -> a:b.">>,
+ [],
+ {errors,[{1,erl_lint,illegal_expr}],[]}},
+
+ {illegal_pattern,
+ <<"f(A+B) -> ok.">>,
+ [],
+ {errors,[{1,erl_lint,illegal_pattern}],[]}}
+ ],
+ [] = run(Config, Ts),
+ ok.
+
+%% Test binary syntax errors
+bin_syntax_errors(Config) ->
+ Ts = [{bin_syntax_errors,
+ <<"t(<<X:bad_size>>) -> X;
+ t(<<_:(x ! y)/integer>>) -> ok;
+ t(<<X:all/integer>>) -> X;
+ t(<<X/bad_type>>) -> X;
+ t(<<X/unit:8>>) -> X;
+ t(<<X:7/float>>) -> X;
+ t(<< <<_:8>> >>) -> ok;
+ t(<<(x ! y):8/integer>>) -> ok.
+ ">>,
+ [],
+ {error,[{1,erl_lint,illegal_bitsize},
+ {2,erl_lint,illegal_bitsize},
+ {3,erl_lint,illegal_bitsize},
+ {4,erl_lint,{undefined_bittype,bad_type}},
+ {5,erl_lint,bittype_unit},
+ {7,erl_lint,illegal_pattern},
+ {8,erl_lint,illegal_pattern}],
+ [{6,erl_lint,{bad_bitsize,"float"}}]}}
+ ],
+ [] = run(Config, Ts),
+ ok.
+
run(Config, Tests) ->
F = fun({N,P,Ws,E}, BadL) ->
case catch run_test(Config, P, Ws) of