[glib/halfline/test-case-pipe-confusion] tests/desktop-app-info: Use named pipe instead of /proc

[Ray Strode <halfline src gnome org>]

commit 8c80fe0dc99364bd784f80377ba0c4bb346423f8
Author: Ray Strode <rstrode redhat com>
Date:   Mon Oct 17 14:44:14 2022 -0400

    tests/desktop-app-info: Use named pipe instead of /proc
    
    Freebsd doesn't always have /proc mounted, so relying on
    /proc for the tests isn't ideal.
    
    This commit changes the desktop-app-info tests to use
    mkfifo instead of /proc/../fd/.. to relay terminal
    arguments.
    
    Might help with this error message I'm seeing in CI:
    
    /tmp/bin-path-H1UQT1/gnome-terminal: cannot create /proc/38961/fd/6: No such file or directory

 gio/tests/desktop-app-info.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)
---
diff --git a/gio/tests/desktop-app-info.c b/gio/tests/desktop-app-info.c
index f49db4af7d..b98e9a02ae 100644
--- a/gio/tests/desktop-app-info.c
+++ b/gio/tests/desktop-app-info.c
@@ -30,6 +30,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 
 static GAppInfo *
 create_command_line_app_info (const char *name,
@@ -1212,7 +1214,8 @@ get_terminal_divider (const char *terminal_name)
 static void
 test_launch_uris_with_terminal (gconstpointer data)
 {
-  int fds[2];
+  int fd;
+  int ret;
   const char *terminal_exec = data;
   char *old_path;
   char *command_line;
@@ -1239,17 +1242,18 @@ test_launch_uris_with_terminal (gconstpointer data)
   old_path = g_strdup (g_getenv ("PATH"));
   g_assert_true (g_setenv ("PATH", bin_path, TRUE));
 
-  g_unix_open_pipe (fds, FD_CLOEXEC, &error);
-  g_assert_no_error (error);
-
   terminal_path = g_build_filename (bin_path, terminal_exec, NULL);
-  output_fd_path = g_strdup_printf (G_DIR_SEPARATOR_S "proc"
-                                    G_DIR_SEPARATOR_S "%" G_PID_FORMAT
-                                    G_DIR_SEPARATOR_S "fd"
-                                    G_DIR_SEPARATOR_S "%d",
-                                    getpid (), fds[0]);
+  output_fd_path = g_build_filename (bin_path, fifo, NULL);
+
+  ret = mkfifo (output_fd_path, 0666);
+
+  g_assert (ret == 0);
+
+  fd = g_open (output_fd_path, O_RDONLY | O_CLOEXEC, 0);
+
+  g_assert (fd >= 0);
 
-  input_stream = g_unix_input_stream_new (fds[0], TRUE);
+  input_stream = g_unix_input_stream_new (fd, TRUE);
   data_input_stream = g_data_input_stream_new (input_stream);
   script_contents = g_strdup_printf ("#!%s\n" \
                                      "out='%s'\n"
@@ -1319,7 +1323,7 @@ test_launch_uris_with_terminal (gconstpointer data)
   g_assert_null (paths);
   g_assert_true (g_setenv ("PATH", old_path, TRUE));
 
-  g_close (fds[1], &error);
+  g_close (fd, &error);
   g_assert_no_error (error);
 
   g_free (sh);