Patch #1309579: wait3 and wait4 were added to the posix module by Chad J. Schroeder.
This was a fair amount of rework of the patch. Refactored test_fork1 so it
could be reused by the new tests for wait3/4. Also made them into new style
unittests (derive from unittest.TestCase).
diff --git a/Lib/test/test_wait4.py b/Lib/test/test_wait4.py
new file mode 100644
index 0000000..027e5c3
--- /dev/null
+++ b/Lib/test/test_wait4.py
@@ -0,0 +1,29 @@
+"""This test checks for correct wait4() behavior.
+"""
+
+import os
+from test.fork_wait import ForkWait
+from test.test_support import TestSkipped, run_unittest
+
+try:
+ os.fork
+except AttributeError:
+ raise TestSkipped, "os.fork not defined -- skipping test_wait4"
+
+try:
+ os.wait4
+except AttributeError:
+ raise TestSkipped, "os.wait4 not defined -- skipping test_wait4"
+
+class Wait4Test(ForkWait):
+ def wait_impl(self, cpid):
+ spid, status, rusage = os.wait4(cpid, 0)
+ self.assertEqual(spid, cpid)
+ self.assertEqual(status, 0, "cause = %d, exit = %d" % (status&0xff, status>>8))
+ self.assertTrue(rusage)
+
+def test_main():
+ run_unittest(Wait4Test)
+
+if __name__ == "__main__":
+ test_main()