Implemented a basic test of the float reader and encoder. See note in code comment.

[~jspiros/python-ebml.git] / ebml / tests / test_core.py

diff --git a/ebml/tests/test_core.py b/ebml/tests/test_core.py
index 54a46a7..7353494 100644 (file)
--- a/ebml/tests/test_core.py
+++ b/ebml/tests/test_core.py
@@ -3,13 +3,16 @@ try:
        from cStringIO import StringIO
 except ImportError:
        from StringIO import StringIO
-from random import randint
+import random
+import sys
 from ..core import *
 
 
 class ElementSizeTests(unittest.TestCase):
        def assert_roundtrip(self, value, length=None):
                encoded = encode_element_size(value, length=length)
+               if length is not None:
+                       self.assertEqual(length, len(encoded))
                encoded_stream = StringIO(encoded)
                self.assertEqual(value, read_element_size(encoded_stream)[0])
        
@@ -28,10 +31,10 @@ class ElementSizeTests(unittest.TestCase):
        def test_max_base_2(self):
                for value in ((2**exp) - 2 for exp in xrange(1, 57)):
                        self.assert_roundtrip(value)
-               
+       
        def test_random(self):
                maximum = 2**56 - 2
-               for value in (randint(0, maximum) for i in xrange(0, 200)):
+               for value in (random.randint(0, maximum) for i in xrange(0, 10000)):
                        self.assert_roundtrip(value)
 
 
@@ -59,5 +62,104 @@ class ElementIDTests(unittest.TestCase):
                        self.assert_roundtrip(id_)
 
 
+class ValueTestCase(unittest.TestCase):
+       encoder = None
+       reader = None
+       
+       def assert_roundtrip(self, value, length=None):
+               if self.encoder is not None and self.reader is not None:
+                       encoded = self.encoder(value, length)
+                       if length is not None:
+                               self.assertEqual(length, len(encoded))
+                       encoded_stream = StringIO(encoded)
+                       self.assertEqual(value, self.reader(encoded_stream, len(encoded)))
+               else:
+                       raise NotImplementedError
+
+
+class UnsignedIntegerTests(ValueTestCase):
+       encoder = staticmethod(encode_unsigned_integer)
+       reader = staticmethod(read_unsigned_integer)
+       maximum = 2**64 - 1
+       
+       def test_random(self):
+               for value in (random.randint(0, self.maximum) for i in xrange(0, 10000)):
+                       self.assert_roundtrip(value)
+       
+       def test_random_longer(self):
+               for value in (random.randint(0, (self.maximum / (2**32))) for i in xrange(0, 10000)):
+                       self.assert_roundtrip(value, length=8)
+       
+       def test_maximum(self):
+               self.assert_roundtrip(self.maximum)
+
+
+class SignedIntegerTests(ValueTestCase):
+       encoder = staticmethod(encode_signed_integer)
+       reader = staticmethod(read_signed_integer)
+       minimum = -(2**63)
+       maximum = (2**63) - 1
+       
+       def test_random(self):
+               for value in (random.randint(self.minimum, self.maximum) for i in xrange(0, 10000)):
+                       self.assert_roundtrip(value)
+       
+       def test_random_longer(self):
+               for value in (random.randint((self.minimum / (2**32)), (self.maximum / (2**32))) for i in xrange(0, 10000)):
+                       self.assert_roundtrip(value, length=8)
+       
+       def test_minimum(self):
+               self.assert_roundtrip(self.minimum)
+       
+       def test_maximum(self):
+               self.assert_roundtrip(self.maximum)
+
+
+class FloatTests(ValueTestCase):
+       # Note:
+       # I'm not sure if this is a good idea, due to the potential for loss of precision.
+       # It seems that, at least with my installation of Python, floats are 64-bit IEEE, and so, for now, this works.
+       
+       encoder = staticmethod(encode_float)
+       reader = staticmethod(read_float)
+       
+       def test_random(self):
+               for value in (random.uniform(1.0, float(random.randint(2, 2**10))) for i in xrange(0, 1000)):
+                       self.assert_roundtrip(value)
+
+
+class StringTests(ValueTestCase):
+       encoder = staticmethod(encode_string)
+       reader = staticmethod(read_string)
+       letters = ''.join(chr(i) for i in xrange(1, 127))
+       
+       def test_random(self):
+               for length in (random.randint(0, 2**10) for i in xrange(0, 1000)):
+                       astring = ''.join(random.sample(self.letters * ((length // len(self.letters)) + 1), length))
+                       self.assert_roundtrip(astring)
+                       self.assert_roundtrip(astring, length=length*2)
+
+
+class UnicodeStringTests(ValueTestCase):
+       encoder = staticmethod(encode_unicode_string)
+       reader = staticmethod(read_unicode_string)
+       letters = u''.join(unichr(i) for i in xrange(1, sys.maxunicode + 1))
+       
+       def test_random(self):
+               for length in (random.randint(0, 2**10) for i in xrange(0, 1000)):
+                       ustring = u''.join(random.sample(self.letters * ((length // len(self.letters)) + 1), length))
+                       ustring = ustring.encode('utf_8').decode('utf_8')
+                       self.assert_roundtrip(ustring)
+                       self.assert_roundtrip(ustring, length=length*5)
+
+
+class DateTests(ValueTestCase):
+       encoder = staticmethod(encode_date)
+       reader = staticmethod(read_date)
+       
+       def test_random(self):
+               pass
+
+
 if __name__ == '__main__':
        unittest.main()
\ No newline at end of file