def test_wait_callback(self):
orig_val = [0]
def val_mod():
orig_val[0] = 8
c = Cmd("sleep 1")
c.spawn()
self.assertEquals(orig_val, [0])
c.wait(val_mod)
self.assertEquals(orig_val, [8])
orig_val = [0]
p = Cmd("echo foo").pipe_to(Cmd("wc -c"))
p.spawn()
self.assertEquals(orig_val, [0])
p.wait(val_mod)
self.assertEquals(orig_val, [8])
if __name__ == '__main__':
unittest.main()
def test_spawn_once(self):
ab = Cmd('yes', {STDOUT: '/dev/null', STDERR: '/dev/null'})
ab.spawn()
self.assertRaises(Exception, lambda: ab.spawn())