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-rw-r--r--lib/dialyzer/test/abstract_SUITE.erl102
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diff --git a/lib/dialyzer/test/abstract_SUITE.erl b/lib/dialyzer/test/abstract_SUITE.erl
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+%% This suite contains cases that cannot be written
+%% in Erlang itself and must be done via the abstract
+%% format.
+
+-module(abstract_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+-include("dialyzer_test_constants.hrl").
+
+-export([suite/0, all/0, init_per_suite/0, init_per_suite/1]).
+-export([generated_case/1]).
+
+suite() ->
+ [{timetrap, {minutes, 1}}].
+all() ->
+ [generated_case].
+
+init_per_suite() ->
+ [{timetrap, ?plt_timeout}].
+init_per_suite(Config) ->
+ OutDir = ?config(priv_dir, Config),
+ case dialyzer_common:check_plt(OutDir) of
+ fail -> {skip, "Plt creation/check failed."};
+ ok -> [{dialyzer_options, []}|Config]
+ end.
+
+generated_case(Config) when is_list(Config) ->
+ %% Equivalent to:
+ %%
+ %% -module(foo).
+ %% -export(bar).
+ %% bar() ->
+ %% Arg = sample,
+ %% case Arg of
+ %% #{} -> map;
+ %% _ -> Arg:fn()
+ %% end.
+ %%
+ %% Except the case statement and its clauses are marked as autogenerated.
+ [] =
+ test([{attribute,1,module,foo},
+ {attribute,2,export,[{bar,0}]},
+ {function,3,bar,0,
+ [{clause,3,[],[],
+ [{match,4,{var,4,'Arg'},{atom,4,sample}},
+ {'case',[{location,5},{generated,true}],{var,5,'Arg'},
+ [{clause,[{location,6},{generated,true}],[{map,6,[]}],[],
+ [{atom,6,map}]},
+ {clause,[{location,7},{generated,true}],[{var,7,'_'}],[],
+ [{call,7,{remote,7,{var,7,'Arg'},{atom,7,fn}},[]}]}]}]}]}],
+ Config, [], []),
+ %% With the first clause not auto-generated
+ [{warn_matching,{_,6},_}] =
+ test([{attribute,1,module,foo},
+ {attribute,2,export,[{bar,0}]},
+ {function,3,bar,0,
+ [{clause,3,[],[],
+ [{match,4,{var,4,'Arg'},{atom,4,sample}},
+ {'case',[{location,5},{generated,true}],{var,5,'Arg'},
+ [{clause,6,[{map,6,[]}],[],
+ [{atom,6,map}]},
+ {clause,[{location,7},{generated,true}],[{var,7,'_'}],[],
+ [{call,7,{remote,7,{var,7,'Arg'},{atom,7,fn}},[]}]}]}]}]}],
+ Config, [], []),
+ %% With Arg set to [] so neither clause matches
+ [{warn_return_no_exit,{_,3},_},
+ {warn_matching,{_,6},_},
+ {warn_failing_call,{_,7},_}] =
+ test([{attribute,1,module,foo},
+ {attribute,2,export,[{bar,0}]},
+ {function,3,bar,0,
+ [{clause,3,[],[],
+ [{match,4,{var,4,'Arg'},{nil,4}},
+ {'case',[{location,5},{generated,true}],{var,5,'Arg'},
+ [{clause,[{location,6},{generated,true}],[{map,6,[]}],[],
+ [{atom,6,map}]},
+ {clause,[{location,7},{generated,true}],[{var,7,'_'}],[],
+ [{call,7,{remote,7,{var,7,'Arg'},{atom,7,fn}},[]}]}]}]}]}],
+ Config, [], []),
+ ok.
+
+test(Prog, Config, COpts, DOpts) ->
+ {ok, BeamFile} = compile(Config, Prog, COpts),
+ run_dialyzer(Config, succ_typings, [BeamFile], DOpts).
+
+compile(Config, Prog, CompileOpts) ->
+ OutDir = ?config(priv_dir, Config),
+ Opts = [{outdir, OutDir}, debug_info, return_errors | CompileOpts],
+ {ok, Module, Source} = compile:forms(Prog, Opts),
+ BeamFile = filename:join([OutDir, lists:concat([Module, ".beam"])]),
+ ok = file:write_file(BeamFile, Source),
+ {ok, BeamFile}.
+
+run_dialyzer(Config, Analysis, Files, Opts) ->
+ OutDir = ?config(priv_dir, Config),
+ PltFilename = dialyzer_common:plt_file(OutDir),
+ dialyzer:run([{analysis_type, Analysis},
+ {files, Files},
+ {init_plt, PltFilename},
+ {check_plt, false},
+ {from, byte_code} |
+ Opts]).