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      1 #!/usr/bin/python
      2 #
      3 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
      4 # Use of this source code is governed by a BSD-style license that can be
      5 # found in the LICENSE file.
      6 
      7 """
      8 This testcase exercises the filesystem by creating files of a specified size
      9 and verifying the files are actually created to specification. This test will
     10 ensure we can create a 1gb size file on the stateful partition, and a 100mb
     11 size file on the /tmp partition.
     12 """
     13 
     14 __author__ = 'kdlucas (at] chromium.org (Kelly Lucas)'
     15 
     16 import os
     17 import sys
     18 
     19 from autotest_lib.client.bin import utils, test
     20 from autotest_lib.client.common_lib import error
     21 
     22 
     23 class platform_FileSize(test.test):
     24     """Test creating large files on various file systems."""
     25     version = 1
     26 
     27     def create_file(self, size, fname):
     28         """
     29         Create a file with the specified size.
     30 
     31         Args:
     32             size: int, size in megabytes
     33             fname: string, filename to create
     34         Returns:
     35             int, size of file created.
     36         """
     37         TEXT = 'ChromeOS knows how to make your netbook run fast!\n'
     38         count = size * 20000
     39         fh = file(fname, 'w')
     40         for i in range(count):
     41             fh.write(TEXT)
     42         fh.close()
     43 
     44         if os.path.exists(fname):
     45             fsize = os.path.getsize(fname)
     46             os.remove(fname)
     47             return fsize
     48         raise error.TestFail('Error, %s not found' % fname)
     49 
     50     def run_once(self):
     51         reqsize = [1024, 100]
     52         reqname = ['/mnt/stateful_partition/tempfile', '/tmp/tempfile']
     53         m = 1000000
     54 
     55         for i in range(2):
     56             filesize = self.create_file(reqsize[i], reqname[i])
     57             if not (filesize == (reqsize[i] * m)):
     58                 raise error.TestFail('%s file test failed.' % reqname[i])
     59