Implemented encode_element_size and write_element_size, and added tests. This should...

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

diff --git a/ebml/tests/test_core.py b/ebml/tests/test_core.py
new file mode 100644 (file)
index 0000000..bed71f3
--- /dev/null
+++ b/ebml/tests/test_core.py
@@ -0,0 +1,63 @@
+import unittest
+try:
+       from cStringIO import StringIO
+except ImportError:
+       from StringIO import StringIO
+from random import randint
+from ..core import *
+
+
+class ElementSizeTestsBase(object):
+       def assert_roundtrip(self, value, min_length=1, max_length=EBMLMaxSizeLength):
+               encoded = encode_element_size(value, min_length=min_length, max_length=max_length)
+               encoded_stream = StringIO(encoded)
+               self.assertEqual(value, read_element_size(encoded_stream, max_length=max_length)[0])
+
+
+class ElementSizeTests(unittest.TestCase, ElementSizeTestsBase):
+       def test_undefined(self):
+               for length in xrange(1, 9):
+                       self.assert_roundtrip(None, min_length=length)
+       
+       def test_base_10(self):
+               for value in (10**exp for exp in xrange(1, 16)):
+                       self.assert_roundtrip(value)
+       
+       def test_base_2(self):
+               for value in (2**exp for exp in xrange(1, 56)):
+                       self.assert_roundtrip(value)
+       
+       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)):
+                       self.assert_roundtrip(value)
+
+
+class LargeElementSizeTests(unittest.TestCase, ElementSizeTestsBase): # tests values that WILL be longer than 8 bytes (EBMLMaxSizeLength)
+       def test_base_10(self):
+               for value in (10**exp for exp in xrange(17, 300)):
+                       self.assert_roundtrip(value, max_length=1024)
+       
+       def test_base_2(self):
+               for value in (2**exp for exp in xrange(56, 1024)):
+                       self.assert_roundtrip(value, max_length=1024)
+       
+       def test_max_base_2(self):
+               for value in ((2**exp) - 2 for exp in xrange(57, 1024)):
+                       self.assert_roundtrip(value, max_length=1024)
+       
+       def test_random(self):
+               for value in (randint(2**56 - 1, 2**10240) for i in xrange(0, 200)):
+                       self.assert_roundtrip(value, max_length=10240)
+
+
+# class ElementIDTests(unittest.TestCase):
+#      def assert_roundtrip(self, value, max_length=EBMLMaxIDLength):
+#              encoded = encode_element_id(value, max_length=max_length)
+
+if __name__ == '__main__':
+       unittest.main()
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