class CpuTest(unittest.TestCase):
def setUp(self):
self.mManager = Mock()
self.mHandler = Mock()
self.cpu = Cpu(self.mManager,self.mHandler)
self.aPcb = Mock()
when(self.aPcb).getPid().thenReturn(0)
when(self.aPcb).basePointer().thenReturn(0)
when(self.aPcb).programCounter().thenReturn(0)
when(self.aPcb).size().thenReturn(0)
when(self.aPcb).displazament().thenReturn(0)
self.instruction = Mock()
def test_changeRoundRobin(self):
self.cpu.changeRoundRobin(8)
assert (self.cpu.roundRobin == 8)
def test_pcIncrease(self):
self.cpu.currentPcb = self.aPcb
self.cpu.pcIncrease()
verify(self.aPcb).pcIncrease()
def test_assignPcb(self):
self.cpu.assignPcb(self.aPcb)
assert (self.cpu.currentPcb == self.aPcb)
def test_removePcb(self):
self.cpu.currentPcb = self.aPcb
self.cpu.removePcb()
assert (self.cpu.currentPcb == None)
def test_havePcbWithPcb(self):
self.cpu.currentPcb = self.aPcb
assert (self.cpu.havePcb())
def test_havePcbWithOutPcb(self):
self.assertFalse(self.cpu.havePcb())
def test_executeWithFullQuantum(self):
when(self.cpu).getCurrentPcb().thenReturn(self.aPcb)
when(self.cpu).getMemory().thenReturn(self.mManager)
when(self.mManager).getInstruction(self.aPcb.getPid(),self.aPcb.getDisplacement()).thenReturn(self.instruction)
when(self.instruction).execute().thenReturn(False)
when(self.instruction).isIOInstruction().thenReturn(False)
self.cpu.quantum = 1
self.cpu.execute()
verify(self.cpu.handler,times(1)).toWait(self.aPcb)
verify(self.cpu.handler,times(0)).toKill(self.aPcb)
verify(self.cpu.handler,times(0)).toIO(self.aPcb)
assert self.cpu.quantum == 0
def test_executeWithOutFullQuantum(self):
when(self.cpu).getCurrentPcb().thenReturn(self.aPcb)
when(self.cpu).getMemory().thenReturn(self.mManager)
when(self.mManager).getInstruction(self.aPcb.getPid(),self.aPcb.getDisplacement()).thenReturn(self.instruction)
when(self.instruction).execute().thenReturn(False)
when(self.instruction).isIOInstruction().thenReturn(False)
self.cpu.execute()
verify(self.aPcb).pcIncrease()
verify(self.cpu.handler,times(0)).toWait(self.aPcb)
verify(self.cpu.handler,times(0)).toKill(self.aPcb)
verify(self.cpu.handler,times(0)).toIO(self.aPcb)
assert self.cpu.quantum == 1
def test_executeWithKillIntruction(self):
when(self.cpu).getCurrentPcb().thenReturn(self.aPcb)
when(self.cpu).getMemory().thenReturn(self.mManager)
when(self.mManager).getInstruction(self.aPcb.getPid(),self.aPcb.getDisplacement()).thenReturn(self.instruction)
when(self.instruction).execute().thenReturn(True)
when(self.instruction).isIOInstruction().thenReturn(False)
self.cpu.execute()
verify(self.cpu.handler,times(0)).toWait(self.aPcb)
verify(self.cpu.handler,times(1)).toKill(self.aPcb)
verify(self.cpu.handler,times(0)).toIO(self.aPcb)
assert self.cpu.quantum == 0
def test_executeWithIOIntruction(self):
when(self.cpu).getCurrentPcb().thenReturn(self.aPcb)
when(self.cpu).getMemory().thenReturn(self.mManager)
when(self.mManager).getInstruction(self.aPcb.getPid(),self.aPcb.getDisplacement()).thenReturn(self.instruction)
when(self.instruction).execute().thenReturn(False)
when(self.instruction).isIOInstruction().thenReturn(True)
self.cpu.execute()
verify(self.cpu.handler,times(0)).toWait(self.aPcb)
verify(self.cpu.handler,times(0)).toKill(self.aPcb)
verify(self.cpu.handler,times(1)).toIOInput(self.aPcb)
assert self.cpu.quantum == 0
