#!/usr/bin/python

from components.caretaker import Caretaker
import unittest
from random import randint

class CaretakerTest(unittest.TestCase):
	
	def setUp(self):
		"""
			Init test
		"""
		self.c=Caretaker(1000)
	
	def test___getitem__(self):
		"""
			Test if getitem operation follow Mic-1 rules
		"""
		toWrite=randint(0,126) # Only 7 bit for signed MBR (2^7=127)
		self.c["MBR"]=-toWrite
		self.assertEqual(self.c["MBRU"],toWrite,"Tested with {}".format(-toWrite))
		self.assertEqual(self.c["MBR"],-(-((toWrite-1)^0xFF)),"Tested with {}".format(-toWrite))
		self.c["MBR"]=toWrite
		self.assertEqual(self.c["MBRU"],toWrite,"Tested with {}".format(toWrite))
		self.assertEqual(self.c["MBR"],toWrite,"Tested with {}".format(toWrite))

		with self.assertRaises(KeyError): # Check it returns a KeyError
			self.c["kjhkjhkoih"+str(randint(0,7698))]
			
	def test___setitem__(self):
		"""
			Test if getitem operation follow Mic-1 rules
		"""
		try:
			self.c["RAM"]="Test"
		except Exception:
			self.fail("Failed to assign RAM to caretaker")






if __name__ == "__main__":
	unittest.main()