buptest.py

   1
   2 from __future__ import print_function
   3 from contextlib import contextmanager
   4 from os.path import basename, dirname, realpath
   5 from pipes import quote
   6 from subprocess import PIPE, Popen, check_call
   7 from traceback import extract_stack
   8 import subprocess, sys, tempfile
   9
  10 from wvtest import WVPASSEQ, wvfailure_count
  11
  12 from bup import helpers
  13
  14
  15 @contextmanager
  16 def no_lingering_errors():
  17     def fail_if_errors():
  18         if helpers.saved_errors:
  19             bt = extract_stack()
  20             src_file, src_line, src_func, src_txt = bt[-4]
  21             msg = 'saved_errors ' + repr(helpers.saved_errors)
  22             print('! %-70s %s' % ('%s:%-4d %s' % (basename(src_file),
  23                                                   src_line,
  24                                                   msg),
  25                                   'FAILED'))
  26             sys.stdout.flush()
  27     fail_if_errors()
  28     helpers.clear_errors()
  29     yield
  30     fail_if_errors()
  31     helpers.clear_errors()
  32
  33
  34 # Assumes (of course) this file is at the top-level of the source tree
  35 _bup_tmp = realpath(dirname(__file__) + '/t/tmp')
  36 helpers.mkdirp(_bup_tmp)
  37
  38
  39 @contextmanager
  40 def test_tempdir(prefix):
  41     initial_failures = wvfailure_count()
  42     tmpdir = tempfile.mkdtemp(dir=_bup_tmp, prefix=prefix)
  43     yield tmpdir
  44     if wvfailure_count() == initial_failures:
  45         subprocess.call(['chmod', '-R', 'u+rwX', tmpdir])
  46         subprocess.call(['rm', '-rf', tmpdir])
  47
  48
  49 def logcmd(cmd):
  50     if isinstance(cmd, basestring):
  51         print(cmd, file=sys.stderr)
  52     else:
  53         print(' '.join(map(quote, cmd)), file=sys.stderr)
  54
  55 def exc(cmd, shell=False):
  56     logcmd(cmd)
  57     check_call(cmd, shell=shell)
  58
  59 def exo(cmd, stdin=None, stdout=True, stderr=False, shell=False, check=True):
  60     logcmd(cmd)
  61     p = Popen(cmd,
  62               stdin=None,
  63               stdout=(PIPE if stdout else None),
  64               stderr=PIPE,
  65               shell=shell)
  66     out, err = p.communicate()
  67     if check and p.returncode != 0:
  68         raise Exception('subprocess %r failed with status %d, stderr: %r'
  69                         % (' '.join(map(quote, cmd)), p.returncode, err))
  70     return out, err, p