diff --git a/README.md b/README.md
index 7c7814d..e30f691 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,2 @@
 depend : python-qt4, python-twisted, python-qt4reactor
+this project is still in progress.
diff --git a/rdpy/dotest.py b/rdpy/dotest.py
new file mode 100644
index 0000000..49cc586
--- /dev/null
+++ b/rdpy/dotest.py
@@ -0,0 +1,18 @@
+'''
+@author: sylvain
+'''
+import sys, os
+# Change path so we find rdpy
+sys.path.insert(1, os.path.join(sys.path[0], '..'))
+import unittest, rdpy.test.network.type
+
+def headerTest(name):
+    print "-"*40
+    print name
+    print "-"*40
+    
+if __name__ == '__main__':
+    headerTest("Test case rdpy.test.network.type.TypeCase")
+    suite = unittest.TestLoader().loadTestsFromTestCase(rdpy.test.network.type.TypeCase)
+    unittest.TextTestRunner(verbosity=2).run(suite)
+
diff --git a/rdpy/network/type.py b/rdpy/network/type.py
index 4f4559d..1e31c46 100644
--- a/rdpy/network/type.py
+++ b/rdpy/network/type.py
@@ -563,9 +563,17 @@ class UInt24Be(SimpleType):
     def __write__(self, s):
         '''
         special write for a special type
+        @param s: Stream
         '''
         s.write(struct.pack(">I", self.value)[1:])
         
+    def __read__(self, s):
+        '''
+        special read for a special type
+        @param s: Stream
+        '''
+        self.value = struct.unpack(self._structFormat, '\x00' + s.read(self._typeSize))[0]
+        
 class UInt24Le(SimpleType):
     '''
     unsigned int with little endian representation
@@ -587,7 +595,14 @@ class UInt24Le(SimpleType):
         @param s: Stream
         '''
         #don't write first byte
-        s.write(struct.pack("<I", self.value)[1:])
+        s.write(struct.pack("<I", self.value)[:3])
+        
+    def __read__(self, s):
+        '''
+        special read for a special type
+        @param s: Stream
+        '''
+        self.value = struct.unpack(self._structFormat, s.read(self._typeSize) + '\x00')[0]
         
 class String(Type, CallableValue):
     '''
@@ -748,7 +763,7 @@ class ArrayType(Type):
         @param readLen: number of element in sequence
         @param conditional : function call before read or write type
         @param optional: boolean check before read if there is still data in stream
-        @param constant: if true check any changement of object during reading
+        @param constant: if true check any changes of object during reading
         '''
         Type.__init__(self, conditional, optional, constant)
         self._typeFactory = typeFactory
diff --git a/rdpy/test/__init__.py b/rdpy/test/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/rdpy/test/network/__init__.py b/rdpy/test/network/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/rdpy/test/network/type.py b/rdpy/test/network/type.py
new file mode 100644
index 0000000..d3fbf82
--- /dev/null
+++ b/rdpy/test/network/type.py
@@ -0,0 +1,330 @@
+'''
+@author: sylvain
+'''
+import unittest
+import rdpy.network.type
+
+class TypeCase(unittest.TestCase):
+    '''
+    represent test case for all classes and function
+    present in rdpy.network.type
+    '''
+    def test_callable_value_const(self):
+        '''
+        test if callable value with const ctor doesn't change value
+        '''
+        c = rdpy.network.type.CallableValue(5)
+        self.assertEqual(c.value, 5, "invalid callable const")
+        
+    def test_callable_value_lambda(self):
+        '''
+        test if callable value with lambda ctor return dynamic value
+        '''
+        c = rdpy.network.type.CallableValue(lambda:5)
+        self.assertEqual(c.value, 5, "invalid callable lambda")
+    
+    def test_type_write_conditional_true(self):
+        '''
+        test when write is obligatory call write function
+        '''
+        class TestType(rdpy.network.type.Type):
+            def __write__(self, s):
+                raise Exception()
+        s = rdpy.network.type.Stream()
+        self.assertRaises(Exception, s.writeType, TestType(conditional = lambda:True))
+    
+    @unittest.expectedFailure
+    def test_type_write_conditional_false(self):
+        '''
+        test when write doesn't needed, doesn't call write function
+        '''
+        class TestType(rdpy.network.type.Type):
+            def __write__(self, s):
+                raise Exception()
+        s = rdpy.network.type.Stream()
+        self.assertRaises(Exception, s.writeType, TestType(conditional = lambda:False))
+        
+    def test_type_read_conditional_true(self):
+        '''
+        test when read is obligatory call write function
+        '''
+        class TestType(rdpy.network.type.Type):
+            def __read__(self, s):
+                raise Exception()
+        s = rdpy.network.type.Stream()
+        self.assertRaises(Exception, s.readType, TestType(conditional = lambda:True))
+    
+    @unittest.expectedFailure
+    def test_type_read_conditional_false(self):
+        '''
+        test when read doesn't needed, doesn't call read function
+        '''
+        class TestType(rdpy.network.type.Type):
+            def __read__(self, s):
+                raise Exception()
+        s = rdpy.network.type.Stream()
+        self.assertRaises(Exception, s.readType, TestType(conditional = lambda:False))
+        
+    
+    def test_sizeof_uint8_conditional_true(self):
+        '''
+        test if sizeof of UInt8 is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt8(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 1, "invalid sizeof")
+        
+    def test_sizeof_uint8_conditional_false(self):
+        '''
+        test if sizeof of UInt8 is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt8(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_uint16Le_conditional_true(self):
+        '''
+        test if sizeof of uint16Le is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt16Le(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 2, "invalid sizeof")
+        
+    def test_sizeof_uint16Le_conditional_false(self):
+        '''
+        test if sizeof of uint16Le is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt16Le(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_uint16Be_conditional_true(self):
+        '''
+        test if sizeof of uint16Be is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt16Be(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 2, "invalid sizeof")
+        
+    def test_sizeof_uint16Be_conditional_false(self):
+        '''
+        test if sizeof of uint16Be is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt16Be(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_uint24Le_conditional_true(self):
+        '''
+        test if sizeof of uint24Le is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt24Le(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 3, "invalid sizeof")
+        
+    def test_sizeof_uint24Le_conditional_false(self):
+        '''
+        test if sizeof of uint24Le is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt24Le(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_uint24Be_conditional_true(self):
+        '''
+        test if sizeof of uint24Be is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt24Be(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 3, "invalid sizeof")
+        
+    def test_sizeof_uint24Be_conditional_false(self):
+        '''
+        test if sizeof of uint24Be is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt24Be(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_uint32Le_conditional_true(self):
+        '''
+        test if sizeof of uint32Le is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt32Le(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 4, "invalid sizeof")
+        
+    def test_sizeof_uint32Le_conditional_false(self):
+        '''
+        test if sizeof of uint32Le is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt32Le(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_uint32Be_conditional_true(self):
+        '''
+        test if sizeof of uint32Be is 1 when type is conditional true
+        '''
+        v = rdpy.network.type.UInt32Be(conditional = lambda:True)
+        self.assertEqual(rdpy.network.type.sizeof(v), 4, "invalid sizeof")
+        
+    def test_sizeof_uint32Be_conditional_false(self):
+        '''
+        test if sizeof of uint32Be is 1 when type is conditional false
+        '''
+        v = rdpy.network.type.UInt32Be(conditional = lambda:False)
+        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
+        
+    def test_sizeof_list(self):
+        '''
+        test call sizeof on list of type
+        '''
+        v = [rdpy.network.type.UInt8(), rdpy.network.type.UInt16Le(), rdpy.network.type.UInt32Le()]
+        self.assertEqual(rdpy.network.type.sizeof(v), 7, "invalid sizeof")
+        
+    def test_sizeof_list_conditional(self):
+        '''
+        test call sizeof on list of type with one type hidden
+        '''
+        v = [rdpy.network.type.UInt8(), rdpy.network.type.UInt16Le(conditional = lambda:False), rdpy.network.type.UInt32Le()]
+        self.assertEqual(rdpy.network.type.sizeof(v), 5, "invalid sizeof")
+        
+    def test_sizeof_tuple(self):
+        '''
+        test call sizeof on tuple of type
+        '''
+        v = [rdpy.network.type.UInt8(), rdpy.network.type.UInt16Le(), rdpy.network.type.UInt32Le()]
+        self.assertEqual(rdpy.network.type.sizeof(v), 7, "invalid sizeof")
+        
+    def test_sizeof_tuple_conditional(self):
+        '''
+        test call sizeof on tuple of type with one type hidden
+        '''
+        v = (rdpy.network.type.UInt8(), rdpy.network.type.UInt16Le(), rdpy.network.type.UInt32Le(conditional = lambda:False))
+        self.assertEqual(rdpy.network.type.sizeof(v), 3, "invalid sizeof")
+        
+    def test_stream_write_uint8_type(self):
+        '''
+        test write uint8 in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt8(1))
+        self.assertEqual(''.join(s.buflist), '\x01', "invalid stream write")
+        
+    def test_stream_write_uint16Le_type(self):
+        '''
+        test write UInt16Le in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt16Le(1))
+        self.assertEqual(''.join(s.buflist), '\x01\x00', "invalid stream write")
+    
+    def test_stream_write_uint16Be_type(self):
+        '''
+        test write UInt16Be in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt16Be(1))
+        self.assertEqual(''.join(s.buflist), '\x00\x01', "invalid stream write")
+        
+    def test_stream_write_uint24Le_type(self):
+        '''
+        test write UInt24Le in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt24Le(1))
+        self.assertEqual(''.join(s.buflist), '\x01\x00\x00', "invalid stream write")
+    
+    def test_stream_write_uint24Be_type(self):
+        '''
+        test write uint24Be in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt24Be(1))
+        self.assertEqual(''.join(s.buflist), '\x00\x00\x01', "invalid stream write")
+        
+    def test_stream_write_uint32Le_type(self):
+        '''
+        test write UInt32Le in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt32Le(1))
+        self.assertEqual(''.join(s.buflist), '\x01\x00\x00\x00', "invalid stream write")
+    
+    def test_stream_write_uint32Be_type(self):
+        '''
+        test write UInt32Be in stream
+        '''
+        s = rdpy.network.type.Stream()
+        s.writeType(rdpy.network.type.UInt32Be(1))
+        self.assertEqual(''.join(s.buflist), '\x00\x00\x00\x01', "invalid stream write")
+        
+    def test_stream_read_uint8_type(self):
+        '''
+        test read UInt8 type from stream
+        '''
+        s = rdpy.network.type.Stream('\x01')
+        t = rdpy.network.type.UInt8()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read value")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_uint16Le_type(self):
+        '''
+        test read UInt16Le type from stream
+        '''
+        s = rdpy.network.type.Stream('\x01\x00')
+        t = rdpy.network.type.UInt16Le()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read value")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_uint16Be_type(self):
+        '''
+        test read UInt16Be type from stream
+        '''
+        s = rdpy.network.type.Stream('\x00\x01')
+        t = rdpy.network.type.UInt16Be()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read value")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_uint24Le_type(self):
+        '''
+        test read UInt24Le type from stream
+        '''
+        s = rdpy.network.type.Stream('\x01\x00\x00')
+        t = rdpy.network.type.UInt24Le()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read value")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_uint24Be_type(self):
+        '''
+        test read UInt24Be type from stream
+        '''
+        s = rdpy.network.type.Stream('\x00\x00\x01')
+        t = rdpy.network.type.UInt24Be()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_uint32Le_type(self):
+        '''
+        test read UInt32Le type from stream
+        '''
+        s = rdpy.network.type.Stream('\x01\x00\x00\x00')
+        t = rdpy.network.type.UInt32Le()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read value")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_uint32Be_type(self):
+        '''
+        test read UInt32Be type from stream
+        '''
+        s = rdpy.network.type.Stream('\x00\x00\x00\x01')
+        t = rdpy.network.type.UInt32Be()
+        s.readType(t)
+        self.assertEqual(t.value, 1, "invalid stream read")
+        self.assertEqual(s.dataLen(), 0, "not read all stream")
+        
+    def test_stream_read_optional_singletype(self):
+        '''
+        test optional option in case of simple type reading
+        '''
+        #unsigned int case
+        t = rdpy.network.type.SimpleType("I", 4, False, 0, optional = True)
+        s1 = rdpy.network.type.Stream()
+        s1.readType(t)
+        self.assertEqual(t.value, 0, "invalid stream read optional value")
+        
\ No newline at end of file