test_expect.py 文件源码

def test_expect_exact (self):
        the_old_way = subprocess.Popen(args=['ls', '-l', '/bin'],
                stdout=subprocess.PIPE).communicate()[0].rstrip()
        p = pexpect.spawn('ls -l /bin')
        the_new_way = b''
        while 1:
            i = p.expect_exact ([b'\n', pexpect.EOF])
            the_new_way = the_new_way + p.before
            if i == 1:
                break
        the_new_way = the_new_way.replace(b'\r\n', b'\n'
                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
        the_old_way = the_old_way.replace(b'\r\n', b'\n'
                ).replace(b'\r', b'\n').replace(b'\n\n', b'\n').rstrip()
        assert the_old_way == the_new_way, hex_diff(the_old_way, the_new_way)
        p = pexpect.spawn('echo hello.?world')
        i = p.expect_exact(b'.?')
        self.assertEqual(p.before, b'hello')
        self.assertEqual(p.after, b'.?')