tools/test_lib.py

   1 #!/usr/bin/python
   2 # Copyright 2008, Google Inc.
   3 # All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
   7 # met:
   8 #
   9 #     * Redistributions of source code must retain the above copyright
  10 # notice, this list of conditions and the following disclaimer.
  11 #     * Redistributions in binary form must reproduce the above
  12 # copyright notice, this list of conditions and the following disclaimer
  13 # in the documentation and/or other materials provided with the
  14 # distribution.
  15 #     * Neither the name of Google Inc. nor the names of its
  16 # contributors may be used to endorse or promote products derived from
  17 # this software without specific prior written permission.
  18 #
  19 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31
  32 """Testing Library For Nacl
  33
  34 """
  35
  36 import difflib
  37 import re
  38 import subprocess
  39 import sys
  40 import time
  41
  42
  43 def RunTest(cmd):
  44   """Run a test where we only care about the return code."""
  45   assert type(cmd) == list
  46   failed = 0
  47   start = time.time()
  48   try:
  49     p = subprocess.Popen(cmd)
  50     retcode = p.wait()
  51   except OSError:
  52     print 'exception: ' + str(sys.exc_info()[1])
  53     retcode = 0
  54     failed = 1
  55
  56   end = time.time()
  57   return (end - start, retcode, failed)
  58
  59
  60 def RunTestWithInputOutput(cmd, input_data):
  61   """Run a test where we also care about stdin/stdout/stderr.
  62
  63   NOTE: this cannot handle arbitrarily long output (up to 1M)
  64   """
  65   assert type(cmd) == list
  66   stdout = ''
  67   stderr = ''
  68   failed = 0
  69   start = time.time()
  70   try:
  71     p = subprocess.Popen(cmd,
  72                          bufsize=1000*1000,
  73                          stdin=subprocess.PIPE,
  74                          stderr=subprocess.PIPE,
  75                          stdout=subprocess.PIPE)
  76     p.stdin.write(input_data)
  77     p.stdin.close()
  78     stdout = p.stdout.read()
  79     stderr = p.stderr.read()
  80     retcode = p.wait()
  81   except OSError, x:
  82     if x.errno == 10:
  83       print '@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
  84       print 'ignoring exception', str(sys.exc_info()[1])
  85       print 'return code NOT checked'
  86       print 'this seems to be a windows issue'
  87       print '@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
  88       failed = 0
  89       retcode = 0
  90     else:
  91       print 'exception: ' + str(sys.exc_info()[1])
  92       retcode = 0
  93       failed = 1
  94   end = time.time()
  95   return (end - start, retcode, failed, stdout, stderr)
  96
  97
  98 def DiffStringsIgnoringWhiteSpace(a, b):
  99   a = a.splitlines()
 100   b = b.splitlines()
 101   # NOTE: the whitespace stuff seems to be broken in python
 102   cruncher = difflib.SequenceMatcher(lambda x: x in ' \\t', a, b)
 103
 104   for group in cruncher.get_grouped_opcodes():
 105     eq = True
 106     for tag, i1, i2, j1, j2 in group:
 107       if tag != 'equal':
 108         eq = False
 109         break
 110     if eq: continue
 111     i1, i2, j1, j2 = group[0][1], group[-1][2], group[0][3], group[-1][4]
 112     yield '@@ -%d,%d +%d,%d @@\n' % (i1+1, i2-i1, j1+1, j2-j1)
 113
 114     for tag, i1, i2, j1, j2 in group:
 115       if tag == 'equal':
 116         for line in a[i1:i2]:
 117           yield ' [' + line + ']'
 118         continue
 119       if tag == 'replace' or tag == 'delete':
 120         for line in a[i1:i2]:
 121           yield '-[' + line + ']'
 122       if tag == 'replace' or tag == 'insert':
 123         for line in b[j1:j2]:
 124           yield '+[' + line + ']'
 125
 126
 127 def RegexpFilterLines(regexp, lines):
 128   """Apply regexp to filter lines of text.
 129
 130   Any carriage return / newline sequence is turned into a newline.
 131
 132   Args:
 133     regexp: A regular expression which may contain regexp groups, in
 134       which case the line is replaced with the groups (text outside
 135       the groups are omitted, useful for eliminating file names that
 136       might change, etc).
 137
 138     lines: A string containing newline-separated lines of text
 139
 140   Return:
 141     Filtered lines of text, newline separated.
 142   """
 143
 144   result = []
 145   nfa = re.compile(regexp)
 146   for line in lines.split('\n'):
 147     if line.endswith('\r'):
 148       line = line[:-1]
 149     mobj = nfa.search(line)
 150     if mobj:
 151       if not mobj.groups():
 152         result.append(line)
 153       else:
 154         matched_strings = []
 155         for s in mobj.groups():
 156           if s is not None:
 157             matched_strings.append(s)
 158         result.append(''.join(matched_strings))
 159   return '\n'.join(result)