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1# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import glob, logging, os
6
7from autotest_lib.client.bin import test, utils
8from autotest_lib.client.common_lib import error
9
10class hardware_RealtekCardReader(test.test):
11    version = 1
12
13    def run_once(self):
14        # Look for the Realtek USB card reader.
15        # This requires a plugged in SD card.
16        lsusb_output = utils.system_output("lsusb -t")
17        if not "Driver=ums-realtek" in lsusb_output:
18            raise error.TestFail("The Realtek card reader USB device was not "
19                                 "detected.  This test requires an SD card to "
20                                 "be inserted to detect the USB device.")
21
22        blockdevs = glob.glob("/sys/block/*")
23        for dev in blockdevs:
24            removable = utils.read_one_line(os.path.join(dev, "removable"))
25            if removable == "1":
26                logging.info("Found removable block device %s", dev)
27                return True
28
29        raise error.TestFail("The card reader USB device was detected, but "
30                             "no removable block devices are seen.")
31