code.kerkeslager.com Git - fur/blob - integration_tests.py

   1 import os
   2 import os.path
   3 import subprocess
   4 import unittest
   5
   6 # Go to the directory of the current file so we know where we are in the filesystem
   7 os.chdir(os.path.dirname(os.path.abspath(__file__)))
   8
   9 class OutputTests(unittest.TestCase):
  10     pass
  11
  12 def add_example_output_test(filename):
  13     def test(self):
  14         compile_fur_to_c_result = subprocess.call([
  15             'python',
  16             'main.py',
  17             os.path.join('examples', filename),
  18         ])
  19
  20         if compile_fur_to_c_result != 0:
  21             raise Exception('Example "{}" did not compile'.format(filename))
  22
  23         compile_c_to_executable_result = subprocess.call([
  24             'gcc',
  25             os.path.join('examples', filename + '.c'),
  26         ])
  27
  28         if compile_c_to_executable_result != 0:
  29             raise Exception('Example output "{}" did not compile'.format(filename + '.c'))
  30
  31         try:
  32             p = subprocess.Popen('./a.out', stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  33             actual_stdout, actual_stderr = p.communicate()
  34
  35             expected_stdout_path = os.path.join('examples', filename + '.stdout.txt')
  36
  37             if os.path.isfile(expected_stdout_path):
  38                 with open(expected_stdout_path, 'rb') as f:
  39                     expected_stdout = f.read()
  40             else:
  41                 expected_stdout = b''
  42
  43             expected_stderr_path = os.path.join('examples', filename + '.stderr.txt')
  44
  45             if os.path.isfile(expected_stderr_path):
  46                 with open(expected_stderr_path, 'rb') as f:
  47                     expected_stderr = f.read()
  48             else:
  49                 expected_stderr = b''
  50
  51             self.assertEqual(expected_stderr, actual_stderr)
  52
  53             # We don't clean up the C file in the finally clause because it can be useful to have in case of errors
  54             os.remove(os.path.join('examples', filename + '.c'))
  55
  56         finally:
  57             try:
  58                 os.remove('a.out')
  59             except OSError:
  60                 pass
  61
  62     setattr(OutputTests, 'test_' + filename, test)
  63
  64 class MemoryLeakTests(unittest.TestCase):
  65     pass
  66
  67 def add_example_memory_leak_test(filename):
  68     def test(self):
  69         compile_fur_to_c_result = subprocess.call([
  70             'python',
  71             'main.py',
  72             os.path.join('examples', filename),
  73         ])
  74
  75         if compile_fur_to_c_result != 0:
  76             raise Exception('Example "{}" did not compile'.format(filename))
  77
  78         compile_c_to_executable_result = subprocess.call([
  79             'gcc',
  80             '-ggdb3',
  81             os.path.join('examples', filename + '.c'),
  82         ])
  83
  84         if compile_c_to_executable_result != 0:
  85             raise Exception('Example output "{}" did not compile'.format(filename + '.c'))
  86
  87         try:
  88             with open(os.devnull, 'w') as devnull:
  89                 expected_return = 0
  90                 actual_return = subprocess.call(
  91                     [
  92                         'valgrind',
  93                         '--tool=memcheck',
  94                         '--leak-check=yes',
  95                         '--show-reachable=yes',
  96                         '--num-callers=20',
  97                         '--track-fds=yes',
  98                         '--error-exitcode=42',
  99                         '-q',
 100                         './a.out',
 101                     ],
 102                     stdout=devnull,
 103                     stderr=devnull,
 104                 )
 105
 106                 self.assertEqual(expected_return, actual_return)
 107
 108                 # We don't clean up the C file in the finally clause because it can be useful to have in case of errors
 109                 os.remove(os.path.join('examples', filename + '.c'))
 110
 111         finally:
 112             try:
 113                 os.remove('a.out')
 114             except OSError:
 115                 pass
 116
 117     setattr(MemoryLeakTests, 'test_' + filename, test)
 118
 119 filenames = (
 120     entry.name
 121     for entry in os.scandir('examples')
 122     if entry.is_file()
 123     if entry.name.endswith('.fur')
 124 )
 125
 126 for filename in filenames:
 127     add_example_output_test(filename)
 128     add_example_memory_leak_test(filename)
 129
 130 unittest.main()