Merge branch 'rickard/erl_call/ERL-881/OTP-15676' into maint-21

* rickard/erl_call/ERL-881/OTP-15676:
  Add smoke test for erl_call
  Add new api functions to ei_fake_prog
  Fix timeout value when waiting for emulator start
  Fix initialization of erl_call

1 files changed, 96 insertions, 0 deletions

diff --git a/lib/erl_interface/test/erl_call_SUITE.erl b/lib/erl_interface/test/erl_call_SUITE.erl
new file mode 100644
index 0000000000..9e2b2e4251
--- /dev/null
+++ b/lib/erl_interface/test/erl_call_SUITE.erl
@@ -0,0 +1,96 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2019. All Rights Reserved.
+%% 
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%% 
+%% %CopyrightEnd%
+%%
+
+%%
+-module(erl_call_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+
+-export([all/0, smoke/1]).
+
+all() -> 
+    [smoke].
+
+smoke(Config) when is_list(Config) ->
+    ErlCall = find_erl_call(),
+    NameSwitch = case net_kernel:longnames() of
+                     true ->
+                         "-name";
+                     false ->
+                         "-sname"
+                 end,
+    Name = atom_to_list(?MODULE)
+        ++ "-"
+        ++ integer_to_list(erlang:system_time(microsecond)),
+
+    ArgsList = ["-s", "-a", "erlang node", NameSwitch, Name],
+    io:format("erl_call: \"~ts\"\n~nargs list: ~p~n", [ErlCall, ArgsList]),
+    CmdRes = get_smoke_port_res(open_port({spawn_executable, ErlCall},
+                                          [{args, ArgsList}, eof]), []),
+    io:format("CmdRes: ~p~n", [CmdRes]),
+
+    [_, Hostname] = string:lexemes(atom_to_list(node()), "@"),
+    NodeName = list_to_atom(Name ++ "@" ++ Hostname),
+    io:format("NodeName: ~p~n~n", [NodeName]),
+
+    pong = net_adm:ping(NodeName),
+    rpc:cast(NodeName, erlang, halt, []),
+    NodeName = list_to_atom(string:trim(CmdRes, both, "'")),
+    ok.
+
+%
+% Utility functions...
+%
+
+find_erl_call() ->
+    ErlCallName = case os:type() of
+                      {win32, _} -> "erl_call.exe";
+                      _ -> "erl_call"
+                  end,
+    LibDir = code:lib_dir(erl_interface),
+    InstalledErlCall = filename:join([LibDir, "bin", ErlCallName]),
+    TargetDir = erlang:system_info(system_architecture),
+    TargetErlCall = filename:join([LibDir, "bin", TargetDir, ErlCallName]),
+    
+    try
+        lists:foreach(fun (F) ->
+                              io:format("Checking: \"~ts\"~n", [F]),
+                              case file:read_file_info(F) of
+                                  {ok, _} ->
+                                      throw(F);
+                                  _ ->
+                                      ok
+                              end
+                      end,
+                      [InstalledErlCall, TargetErlCall]),
+        exit({missing, erl_call})
+    catch
+        throw:ErlCall ->
+            ErlCall
+    end.
+
+get_smoke_port_res(Port, Acc) when is_port(Port) ->
+    receive
+        {Port, {data, Data}} ->
+            get_smoke_port_res(Port, [Acc|Data]);
+        {Port, eof} ->
+            lists:flatten(Acc)
+    end.
+