1 files changed, 156 insertions, 0 deletions
diff --git a/lib/tools/test/cover_SUITE_data/d.erl b/lib/tools/test/cover_SUITE_data/d.erl
new file mode 100644
index 0000000000..696e27e49b
--- /dev/null
+++ b/lib/tools/test/cover_SUITE_data/d.erl
@@ -0,0 +1,156 @@
+-module(d).
+
+-export([start/0, stop/0]).
+-export([store/2, store/3, move/2,
+	 location/1, who_are_at/1, who_are_older/1,
+	 size/0]).
+-export([init/0]). % spawn
+
+-record(person, {name, age, location, moved=false}).
+
+%%%----------------------------------------------------------------------
+%%% User interface functions
+%%%----------------------------------------------------------------------
+
+%%% start() -> pid()
+start() ->
+    spawn(?MODULE, init, []).
+
+%%% stop()
+stop() ->
+    arne ! stop.
+
+%%% store(Name, Location) ->
+%%% store(Name, Age, Location) -> ok | {error,Reason}
+%%%   Name = Location = atom()
+%%%   Age = integer()
+%%%   Reason = not_started | no_response | {internal_error,term()}
+store(Name, Location) ->
+    store(Name, ?AGE, Location).
+store(Name, Age, Location) when atom(Name), integer(Age), atom(Location) ->
+    send({store, Name, Age, Location}).
+
+%%% move(OldLocation, NewLocation) -> Names | {error,Reason}
+%%%   OldLocation = NewLocation = atom()
+%%%   Names = [Name]
+%%%     Name = atom()
+%%%   Reason = not_started | no_response | {internal_error,term()}
+move(OldLocation, NewLocation) ->
+    send({move, OldLocation, NewLocation}).
+
+%%% location(Name) -> Location | no_such_person | {error,Reason}
+%%%   Name = atom()
+%%%   Reason = not_started | no_response | {internal_error,term()}
+location(Name) when atom(Name) ->
+    send({location, Name}).
+
+%%% who_are_at(Location) -> Names | {error,Reason}
+%%%   Location = atom()
+%%%   Names = [Name]
+%%%     Name = atom()
+%%%   Reason = not_started | no_response | {internal_error,term()}
+who_are_at(Location) when atom(Location) ->
+    send({who_are_at, Location}).
+
+%%% who_are_older(Age) -> Names | {error,Reason}
+%%%   Age = integer()
+%%%   Names = [Name]
+%%%     Name = atom()
+%%%   Reason = not_started | no_response | {internal_error,term()}
+who_are_older(Age) when integer(Age) ->
+    send({who_are_older, Age}).
+
+%%% size() -> N | {error,Reason}
+%%%   N = integer()
+%%%   Reason = not_started | no_response | {internal_error,term()}
+size() ->
+    send(size).
+
+%%%----------------------------------------------------------------------
+%%% Main loop
+%%%----------------------------------------------------------------------
+send(Request) ->
+    Pid = whereis(arne),
+    if
+	Pid==undefined ->
+	    {error, not_started};
+	true ->
+	    send(Pid, Request)
+    end.
+send(Pid, Request) ->
+    Pid ! {request, self(), Request},
+    receive
+	{reply, Reply} ->
+	    Reply
+    after
+	1000 ->
+	    {error, no_response}
+    end.
+		
+init() ->
+    register(arne, self()),
+    loop([]).
+
+loop(Db) ->
+    receive
+	stop ->
+	    true;
+	{request, From, Request} ->
+	    case catch handle(Request, Db) of
+		{reply, Reply, NewDb} ->
+		    From ! {reply, Reply},
+		    loop(NewDb);
+		{'EXIT', Reason} ->
+		    From ! {reply, {error, {internal_error, Reason}}},
+		    loop(Db)
+	    end
+    end.
+
+%%%----------------------------------------------------------------------
+%%% DB functionality
+%%%----------------------------------------------------------------------
+handle({store, Name, Age, Location}, Db) ->
+    {reply, ok, [#person{name=Name, age=Age, location=Location} | Db]};
+handle({move, OldLocation, NewLocation}, Db) ->
+    {Names, NewDb} = move(OldLocation, NewLocation, Db, [], []),
+    {reply, Names, NewDb};
+handle({location, Name}, Db) ->
+    case lists:keysearch(Name, #person.name, Db) of
+	{value, #person{location=Location}} when atom(Location) ->
+	    {reply, Location, Db};
+	false ->
+	    {reply, no_such_name, Db}
+    end;
+handle({who_are_at, Location}, Db) ->
+    Result = lists:foldl(fun(Person, Names) ->
+				 case Person#person.location of
+				     Location ->
+					 [Person#person.name | Names];
+				     _OtherLocation ->
+					 Names
+				 end
+			 end,
+			 [],
+			 Db),
+    {reply, Result, Db};
+handle({who_are_older, Old}, Db) ->
+    Result = [Name || {person,Name,Age,Location} <- Db,
+		   Age>Old],
+    {reply, Result, Db};
+handle(size, Db) ->
+    Result = count(Db, 0), {reply, Result, Db}.
+
+count([H|T], N) ->
+    count(T, N+1);
+count([], N) ->
+    N.
+
+move(OldLoc, NewLoc, [#person{location=OldLoc} = Person|T], Db, Names) ->
+    NewPerson = Person#person{location=NewLoc,
+			      moved=true},
+    NewNames = [Person#person.name|Names],
+    move(OldLoc, NewLoc, T, [NewPerson|Db], NewNames);
+move(OldLoc, NewLoc, [Person|T], Db, Names) ->
+    move(OldLoc, NewLoc, T, [Person|Db], Names);
+move(OldLoc, NewLoc, [], Db, Names) ->
+    {lists:reverse(Names), lists:reverse(Db)}.