runtest.py

   1 #!/usr/bin/env python
   2
   3 import os, sys, re
   4 import argparse, time
   5
   6 import pty
   7 from subprocess import Popen, STDOUT, PIPE
   8 from select import select
   9
  10 # TODO: do we need to support '\n' too
  11 sep = "\r\n"
  12 #sep = "\n"
  13 rundir = None
  14
  15 parser = argparse.ArgumentParser(
  16         description="Run a test file against a Mal implementation")
  17 parser.add_argument('--rundir',
  18         help="change to the directory before running tests")
  19 parser.add_argument('--start-timeout', default=10, type=int,
  20         help="default timeout for initial prompt")
  21 parser.add_argument('--test-timeout', default=20, type=int,
  22         help="default timeout for each individual test action")
  23 parser.add_argument('--pre-eval', default=None, type=str,
  24         help="Mal code to evaluate prior to running the test")
  25 parser.add_argument('--redirect', action='store_true',
  26         help="Run implementation in bash and redirect output to /dev/null")
  27
  28 parser.add_argument('test_file', type=argparse.FileType('r'),
  29         help="a test file formatted as with mal test data")
  30 parser.add_argument('mal_cmd', nargs="*",
  31         help="Mal implementation command line. Use '--' to "
  32              "specify a Mal command line with dashed options.")
  33
  34 class Runner():
  35     def __init__(self, args, redirect=False):
  36         print "args: %s" % repr(args)
  37         if redirect:
  38             #cmd = '/bin/bash -c "' + " ".join(args) + ' |tee /dev/null"'
  39             cmd = " ".join(args) + ' |tee /dev/null'
  40             print "using redirect cmd: '%s'" % cmd
  41             self.p = Popen(cmd, bufsize=0, stdin=PIPE, stdout=PIPE, stderr=STDOUT, shell=True)
  42             self.stdin = self.p.stdin
  43             self.stdout = self.p.stdout
  44         else:
  45             # provide tty to get 'interactive' readline to work
  46             master, slave = pty.openpty()
  47             self.p = Popen(args, bufsize=0, stdin=slave, stdout=slave, stderr=STDOUT)
  48             self.stdin = os.fdopen(master, 'r+b', 0)
  49             self.stdout = self.stdin
  50
  51         #print "started"
  52         self.buf = ""
  53         self.last_prompt = ""
  54
  55     def read_to_prompt(self, prompts, timeout):
  56         end_time = time.time() + timeout
  57         while time.time() < end_time:
  58             [outs,_,_] = select([self.stdin], [], [], 1)
  59             if self.stdin in outs:
  60                 new_data = self.stdin.read(1)
  61                 #print "new_data: '%s'" % new_data
  62                 self.buf += new_data
  63                 for prompt in prompts:
  64                     regexp = re.compile(prompt)
  65                     match = regexp.search(self.buf)
  66                     if match:
  67                         end = match.end()
  68                         buf = self.buf[0:end-len(prompt)]
  69                         self.buf = self.buf[end:]
  70                         self.last_prompt = prompt
  71                         return buf
  72         return None
  73
  74     def write(self, str):
  75         self.stdout.write(str)
  76
  77     def cleanup(self):
  78         if self.p:
  79             self.p.kill()
  80             self.p = None
  81
  82
  83 args = parser.parse_args(sys.argv[1:])
  84 test_data = args.test_file.read().split('\n')
  85
  86 if args.rundir: os.chdir(args.rundir)
  87
  88 r = Runner(args.mal_cmd, redirect=args.redirect)
  89
  90
  91 test_idx = 0
  92 def read_test(data):
  93     global test_idx
  94     form, output, ret = None, "", None
  95     while data:
  96         test_idx += 1
  97         line = data.pop(0)
  98         if re.match(r"^\s*$", line):   # blank line
  99             continue
 100         elif line[0:3] == ";;;":       # ignore comment
 101             continue
 102         elif line[0:2] == ";;":        # output comment
 103             print line[3:]
 104             continue
 105         elif line[0:2] == ";":         # unexpected comment
 106             print "Test data error at line %d:\n%s" % (test_idx, line)
 107             return None, None, None, test_idx
 108         form = line   # the line is a form to send
 109
 110         # Now find the output and return value
 111         while data:
 112             line = data[0]
 113             if line[0:3] == ";=>":
 114                 ret = line[3:].replace('\\r', '\r').replace('\\n', '\n')
 115                 test_idx += 1
 116                 data.pop(0)
 117                 break
 118             elif line[0:2] == "; ":
 119                 output = output + line[2:] + sep
 120                 test_idx += 1
 121                 data.pop(0)
 122             else:
 123                 ret = "*"
 124                 break
 125         if ret: break
 126
 127     return form, output, ret, test_idx
 128
 129 def assert_prompt(timeout):
 130     # Wait for the initial prompt
 131     header = r.read_to_prompt(['user> ', 'mal-user> '], timeout=timeout)
 132     if not header == None:
 133         if header:
 134             print "Started with:\n%s" % header
 135     else:
 136         print "Did not get 'user> ' or 'mal-user> ' prompt"
 137         print "    Got      : %s" % repr(r.buf)
 138         r.cleanup()
 139         sys.exit(1)
 140
 141
 142 # Wait for the initial prompt
 143 assert_prompt(args.start_timeout)
 144
 145 # Send the pre-eval code if any
 146 if args.pre_eval:
 147     sys.stdout.write("RUNNING pre-eval: %s" % args.pre_eval)
 148     p.write(args.pre_eval)
 149     assert_prompt(args.test_timeout)
 150
 151 fail_cnt = 0
 152
 153 while test_data:
 154     form, out, ret, line_num = read_test(test_data)
 155     if form == None:
 156         break
 157     sys.stdout.write("TEST: %s -> [%s,%s]" % (form, repr(out), repr(ret)))
 158     sys.stdout.flush()
 159     expected = "%s%s%s%s" % (form, sep, out, ret)
 160
 161     r.write(form + "\n")
 162     try:
 163         res = r.read_to_prompt(['\r\nuser> ', '\nuser> ',
 164                                 '\r\nmal-user> ', '\nmal-user> '],
 165                                 timeout=args.test_timeout)
 166         #print "%s,%s,%s" % (idx, repr(p.before), repr(p.after))
 167         if ret == "*" or res == expected:
 168             print " -> SUCCESS"
 169         else:
 170             print " -> FAIL (line %d):" % line_num
 171             print "    Expected : %s" % repr(expected)
 172             print "    Got      : %s" % repr(res)
 173             fail_cnt += 1
 174     except:
 175         print "Got Exception"
 176         r.cleanup()
 177         sys.exit(1)
 178 r.cleanup()
 179
 180 if fail_cnt > 0:
 181     print "FAILURES: %d" % fail_cnt
 182     sys.exit(2)
 183 sys.exit(0)