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from types import IntType, FloatType
from simtestutil import PyTestCase, PyTestLoader
import pysimulavr
class XPin(pysimulavr.Pin):
def SetInState(self, pin):
pysimulavr.Pin.SetInState(self, pin)
self.__inState = pin.toChar()
@property
def inState(self): return self.__inState
class TestCase(PyTestCase):
"""
This tests should check (and also show, how to make) the behaviour of
2 Pin instances (aka pins with a output stage and a input line) connected
together. (by a Net instance)
"""
def setUp(self):
# Net instance
self.net = pysimulavr.Net()
def tearDown(self):
# destroy net: disconnect pins
del self.net
def createPin(self, init = None):
if init is None:
p = XPin()
elif type(init) in (IntType, FloatType):
p = XPin(init)
else:
raise Exception, "Pin: parameter type not allowed"
self.net.Add(p)
return p
def test_00(self):
"""check pin state after creation without parameter"""
pin1 = self.createPin()
pin2 = self.createPin()
self.assertTrue(pin1.toChar() == "t", "pin1 is tristate")
self.assertTrue(pin1.inState == "t", "pin1 input is tristate")
self.assertTrue(pin2.toChar() == "t", "pin2 is tristate")
self.assertTrue(pin2.inState == "t", "pin2 input is tristate")
self.assertTrue(pin2.GetAnalogValue(5.0) == 2.75, "pin2: analog value is 2.75V (floating)")
def test_01(self):
"""check pin state after creation one with digital out parameter"""
pin1 = self.createPin(pysimulavr.Pin.HIGH)
pin2 = self.createPin()
self.assertTrue(pin1.toChar() == "H", "pin1 is digital output = high")
self.assertTrue(pin1.inState == "H", "pin1 input is digital high")
self.assertTrue(pin2.toChar() == "t", "pin2 is tristate")
self.assertTrue(pin2.inState == "H", "pin2 input is digital high")
self.assertTrue(pin2.GetAnalogValue(5.0) == 5.0, "pin2: analog value is 5.0V")
def test_02(self):
"""check pin state after creation one with analog out parameter"""
pin1 = self.createPin(3.0)
pin2 = self.createPin()
self.assertTrue(pin1.toChar() == "a", "pin1 is analog output")
self.assertTrue(pin1.inState == "a", "pin1 input is analog")
self.assertTrue(pin2.toChar() == "t", "pin2 is tristate")
self.assertTrue(pin2.inState == "a", "pin2 input is analog")
self.assertTrue(pin2.GetAnalogValue(5.0) == 3.0, "pin2: analog value is 3.0V")
def test_03(self):
"""check transmission of digital states"""
pin1 = self.createPin(pysimulavr.Pin.HIGH)
pin2 = self.createPin()
self.assertTrue(pin2.inState == "H", "pin2 input is digital = high")
pin1.SetPin("L")
self.assertTrue(pin2.inState == "L", "pin2 input is digital = low")
pin1.SetPin("h")
self.assertTrue(pin2.inState == "h", "pin2 input is digital = weak high (pullup)")
pin1.SetPin("l")
self.assertTrue(pin2.inState == "l", "pin2 input is digital = weak low (pulldown)")
def test_04(self):
"""check special digital cases (because 2 active outputs together)"""
pin1 = self.createPin(pysimulavr.Pin.HIGH)
pin2 = self.createPin(pysimulavr.Pin.HIGH)
self.assertTrue(pin2.inState == "H", "pin2 input is digital = high")
pin1.SetPin("L")
self.assertTrue(pin2.inState == "S", "pin2 input is short circuit")
pin1.SetPin("l")
self.assertTrue(pin2.inState == "H", "pin2 input is digital = high")
pin1.SetPin("h")
self.assertTrue(pin2.inState == "H", "pin2 input is digital = high")
pin2.SetPin("l")
self.assertTrue(pin2.inState == "t", "pin2 input is on tristate level")
def test_05(self):
"""check special digital/analog cases (because 2 active outputs together)"""
pin1 = self.createPin(pysimulavr.Pin.HIGH)
pin2 = self.createPin(1.0)
self.assertTrue(pin2.inState == "A", "pin2 input is analog short circuit")
pin1.SetPin("l")
self.assertTrue(pin2.inState == "A", "pin2 input is analog short circuit")
pin1.SetPin("a")
self.assertTrue(pin2.inState == "A", "pin2 input is analog short circuit")
if __name__ == '__main__':
from unittest import TextTestRunner
tests = PyTestLoader("pin").loadTestsFromTestCase(TestCase)
TextTestRunner(verbosity = 2).run(tests)
# EOF
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