def test_empty_returning_main_block(self):
block = InstructionBlock()
self.assertEqual(0, block.get_start_address())
self.assertIsNone(block.return_ip)
ip = InstructionPointer(InstructionBlock(), 7)
block.return_ip = ip # must have no effect
self.__verify_block(block, [], [STOPInstruction()])
def test_empty_relative_block(self):
return_block = InstructionBlock()
block = InstructionBlock(return_block)
self.assertRaises(InstructionBlockNotYetPlacedException, block.get_start_address)
self.assertRaises(MissingReturnAddressException, block.compile_sequence)
ip = InstructionPointer(return_block, 7)
block.return_ip = ip
self.__verify_block(block, [], [GOTOInstruction(ip.block, ip.offset)])
