Add inital disassembler unittests

Author: computerality

tests/__init__.py

@@ -0,0 +1,16 @@
+import unittest
+from pyevmasm import EVMAsm
+
+class DisassembleTests(unittest.TestCase):
+    def test_STOP(self):
+        insn = EVMAsm.disassemble_one('\x00')
+        self.assertTrue(str(insn) == 'STOP')
+
+    def test_JUMPI(self):
+        insn = EVMAsm.disassemble_one('\x57')
+        self.assertTrue(str(insn) == 'JUMPI')
+        self.assertTrue(insn.is_branch)
+ 
+
+if __name__ == '__main__':
+    unittest.main()