test_pytalloc.py

   1 #!/usr/bin/env python
   2 # Simple tests for the talloc python bindings.
   3 # Copyright (C) 2015 Petr Viktorin <pviktori@redhat.com>
   4
   5 import unittest
   6 import subprocess
   7 import sys
   8 import re
   9 import gc
  10
  11 import talloc
  12 import _test_pytalloc
  13
  14 def dummy_func():
  15     pass
  16
  17
  18 class TallocTests(unittest.TestCase):
  19
  20     def test_report_full(self):
  21         # report_full is hardcoded to print to stdout, so use a subprocess
  22         process = subprocess.Popen([
  23             sys.executable, '-c',
  24             """if True:
  25             import talloc, _test_pytalloc
  26             obj = _test_pytalloc.new()
  27             talloc.report_full(obj)
  28             """
  29         ], stdout=subprocess.PIPE)
  30         output, stderr = process.communicate()
  31         output = str(output)
  32         self.assertTrue("full talloc report on 'talloc.Object" in output)
  33         self.assertTrue("This is a test string" in output)
  34
  35     def test_totalblocks(self):
  36         obj = _test_pytalloc.new()
  37         # Two blocks: the string, and the name
  38         self.assertEqual(talloc.total_blocks(obj), 2)
  39
  40     def test_repr(self):
  41         obj = _test_pytalloc.new()
  42         prefix = '<talloc.Object talloc object at'
  43         self.assertTrue(repr(obj).startswith(prefix))
  44         self.assertEqual(repr(obj), str(obj))
  45
  46     def test_destructor(self):
  47         # Check correct lifetime of the talloc'd data
  48         lst = []
  49         obj = _test_pytalloc.DObject(lambda: lst.append('dead'))
  50         self.assertEqual(lst, [])
  51         del obj
  52         gc.collect()
  53         self.assertEqual(lst, ['dead'])
  54
  55
  56 class TallocComparisonTests(unittest.TestCase):
  57
  58     def test_compare_same(self):
  59         obj1 = _test_pytalloc.new()
  60         self.assertTrue(obj1 == obj1)
  61         self.assertFalse(obj1 != obj1)
  62         self.assertTrue(obj1 <= obj1)
  63         self.assertFalse(obj1 < obj1)
  64         self.assertTrue(obj1 >= obj1)
  65         self.assertFalse(obj1 > obj1)
  66
  67     def test_compare_different(self):
  68         # object comparison is consistent
  69         obj1, obj2 = sorted([
  70             _test_pytalloc.new(),
  71             _test_pytalloc.new()])
  72         self.assertFalse(obj1 == obj2)
  73         self.assertTrue(obj1 != obj2)
  74         self.assertTrue(obj1 <= obj2)
  75         self.assertTrue(obj1 < obj2)
  76         self.assertFalse(obj1 >= obj2)
  77         self.assertFalse(obj1 > obj2)
  78
  79     def test_compare_different_types(self):
  80         # object comparison falls back to comparing types
  81         if sys.version_info >= (3, 0):
  82             # In Python 3, types are unorderable -- nothing to test
  83             return
  84         if talloc.Object < _test_pytalloc.DObject:
  85             obj1 = _test_pytalloc.new()
  86             obj2 = _test_pytalloc.DObject(dummy_func)
  87         else:
  88             obj2 = _test_pytalloc.new()
  89             obj1 = _test_pytalloc.DObject(dummy_func)
  90         self.assertFalse(obj1 == obj2)
  91         self.assertTrue(obj1 != obj2)
  92         self.assertTrue(obj1 <= obj2)
  93         self.assertTrue(obj1 < obj2)
  94         self.assertFalse(obj1 >= obj2)
  95         self.assertFalse(obj1 > obj2)
  96
  97
  98 class TallocUtilTests(unittest.TestCase):
  99
 100     def test_get_type(self):
 101         self.assertTrue(talloc.Object is _test_pytalloc.get_object_type())
 102
 103     def test_refrence(self):
 104         # Check correct lifetime of the talloc'd data with multiple references
 105         lst = []
 106         obj = _test_pytalloc.DObject(lambda: lst.append('dead'))
 107         ref = _test_pytalloc.reference(obj)
 108         del obj
 109         gc.collect()
 110         self.assertEqual(lst, [])
 111         del ref
 112         gc.collect()
 113         self.assertEqual(lst, ['dead'])
 114
 115
 116 if __name__ == '__main__':
 117     unittest.TestProgram()