Issue #7564: Skip test_ioctl if another process is attached to /dev/tty.
diff --git a/Lib/test/test_ioctl.py b/Lib/test/test_ioctl.py
index 47e5911..07dac09 100644
--- a/Lib/test/test_ioctl.py
+++ b/Lib/test/test_ioctl.py
@@ -7,9 +7,17 @@
try:
tty = open("/dev/tty", "r")
- tty.close()
except IOError:
raise unittest.SkipTest("Unable to open /dev/tty")
+else:
+ # Skip if another process is in foreground
+ r = fcntl.ioctl(tty, termios.TIOCGPGRP, " ")
+ tty.close()
+ rpgrp = struct.unpack("i", r)[0]
+ if rpgrp not in (os.getpgrp(), os.getsid(0)):
+ raise unittest.SkipTest("Neither the process group nor the session "
+ "are attached to /dev/tty")
+ del tty, r, rpgrp
try:
import pty