[glib] Improve glib-unix test coverage

[Matthias Clasen <matthiasc src gnome org>]

commit d264d32d3b0a5080bc41186d3ef11dd4373af2b5
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 29 13:47:43 2013 -0500

    Improve glib-unix test coverage

 glib/tests/unix.c |   33 +++++++++++++++++++++++++++++++++
 1 files changed, 33 insertions(+), 0 deletions(-)
---
diff --git a/glib/tests/unix.c b/glib/tests/unix.c
index 273b4d4..3543458 100644
--- a/glib/tests/unix.c
+++ b/glib/tests/unix.c
@@ -64,6 +64,38 @@ test_error (void)
   g_clear_error (&error);
 }
 
+static void
+test_nonblocking (void)
+{
+  GError *error = NULL;
+  int pipefd[2];
+  gboolean res;
+  int flags;
+
+  res = g_unix_open_pipe (pipefd, FD_CLOEXEC, &error);
+  g_assert (res);
+  g_assert_no_error (error);
+
+  res = g_unix_set_fd_nonblocking (pipefd[0], TRUE, &error);
+  g_assert (res);
+  g_assert_no_error (error);
+ 
+  flags = fcntl (pipefd[0], F_GETFL);
+  g_assert_cmpint (flags, !=, -1);
+  g_assert (flags & O_NONBLOCK);
+
+  res = g_unix_set_fd_nonblocking (pipefd[0], FALSE, &error);
+  g_assert (res);
+  g_assert_no_error (error);
+ 
+  flags = fcntl (pipefd[0], F_GETFL);
+  g_assert_cmpint (flags, !=, -1);
+  g_assert (!(flags & O_NONBLOCK));
+
+  close (pipefd[0]);
+  close (pipefd[1]);
+}
+
 static gboolean sig_received = FALSE;
 static gboolean sig_timeout = FALSE;
 static int sig_counter = 0;
@@ -221,6 +253,7 @@ main (int   argc,
 
   g_test_add_func ("/glib-unix/pipe", test_pipe);
   g_test_add_func ("/glib-unix/error", test_error);
+  g_test_add_func ("/glib-unix/nonblocking", test_nonblocking);
   g_test_add_func ("/glib-unix/sighup", test_sighup);
   g_test_add_func ("/glib-unix/sigterm", test_sigterm);
   g_test_add_func ("/glib-unix/sighup_again", test_sighup);