Rename app from er_xdg_pipe_menu to xdg_pipe_menuHEADmain

Drop the "er-" prefix throughout: module/atom names, filenames,
socket paths, and docs. It was an implementation detail, not part
of the app's identity.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/test/xdg_pipe_menu_socket_tests.erl b/test/xdg_pipe_menu_socket_tests.erl
new file mode 100644
index 0000000..91cd3e4
--- /dev/null
+++ b/test/xdg_pipe_menu_socket_tests.erl
@@ -0,0 +1,93 @@
+-module(xdg_pipe_menu_socket_tests).
+
+-include_lib("eunit/include/eunit.hrl").
+
+serves_the_cached_menu_test() ->
+    Root = mk_tmp_dir(),
+    AppDir = filename:join(Root, "applications"),
+    ok = file:make_dir(AppDir),
+    write_desktop(AppDir, "foo.desktop", "Foo", "foo"),
+    SockPath = filename:join(
+        test_tmp_dir(), "eunit-socket-" ++ integer_to_list(erlang:unique_integer([positive]))
+    ),
+    PrevSockPath = application:get_env(xdg_pipe_menu, socket_path),
+    application:set_env(xdg_pipe_menu, socket_path, SockPath),
+    with_env(
+        [{"XDG_DATA_HOME", Root}, {"XDG_DATA_DIRS", "/does-not-exist-eunit"}],
+        fun() ->
+            {ok, CachePid} = xdg_pipe_menu_cache:start_link(),
+            {ok, SocketPid} = xdg_pipe_menu_socket:start_link(),
+
+            {ok, Conn} = gen_tcp:connect({local, SockPath}, 0, [binary, {active, false}], 1000),
+            Received = recv_all(Conn, []),
+            gen_tcp:close(Conn),
+
+            Expected = xdg_pipe_menu_cache:get_menu(),
+            stop(SocketPid),
+            stop(CachePid),
+            ?assertEqual(Expected, Received),
+            ?assert(binary:match(Received, <<"Foo">>) =/= nomatch)
+        end
+    ),
+    _ = file:delete(SockPath),
+    ok = rm_rf(Root),
+    restore_env(xdg_pipe_menu, socket_path, PrevSockPath).
+
+%% -- helpers ----------------------------------------------------------------
+
+%% start_link/0 links the started process to us (the test process);
+%% unlink before killing it so the kill signal doesn't propagate back
+%% and take the test process down with it.
+stop(Pid) ->
+    unlink(Pid),
+    true = erlang:exit(Pid, kill).
+
+recv_all(Socket, Acc) ->
+    case gen_tcp:recv(Socket, 0, 1000) of
+        {ok, Data} -> recv_all(Socket, [Data | Acc]);
+        {error, closed} -> iolist_to_binary(lists:reverse(Acc))
+    end.
+
+restore_env(App, Key, undefined) -> application:unset_env(App, Key);
+restore_env(App, Key, {ok, Value}) -> application:set_env(App, Key, Value).
+
+with_env(Vars, Fun) ->
+    Saved = [{Name, os:getenv(Name)} || {Name, _} <- Vars],
+    try
+        lists:foreach(fun({Name, Value}) -> set_env(Name, Value) end, Vars),
+        Fun()
+    after
+        lists:foreach(fun({Name, Value}) -> set_env(Name, Value) end, Saved)
+    end.
+
+set_env(Name, false) -> os:unsetenv(Name);
+set_env(Name, Value) -> os:putenv(Name, Value).
+
+write_desktop(Dir, FileName, Name, Exec) ->
+    ok = file:write_file(
+        filename:join(Dir, FileName),
+        iolist_to_binary(["[Desktop Entry]\nName=", Name, "\nExec=", Exec, "\n"])
+    ).
+
+mk_tmp_dir() ->
+    Path = filename:join(
+        test_tmp_dir(), "eunit-socket-dir-" ++ integer_to_list(erlang:unique_integer([positive]))
+    ),
+    ok = file:make_dir(Path),
+    Path.
+
+test_tmp_dir() ->
+    case os:getenv("TMPDIR") of
+        false -> "/tmp";
+        Dir -> Dir
+    end.
+
+rm_rf(Path) ->
+    case filelib:is_dir(Path) of
+        true ->
+            {ok, Entries} = file:list_dir(Path),
+            lists:foreach(fun(E) -> rm_rf(filename:join(Path, E)) end, Entries),
+            file:del_dir(Path);
+        false ->
+            file:delete(Path)
+    end.