def test_constructor(self):
"Constructor with valid and invalid configuration"
with self.assertRaises(TypeError):
l = Clock('8')
with self.assertRaises(ValueError):
l = Clock(-1)
with self.assertRaises(ValueError):
l = Clock(limits.MIN_FREQUENCY - 1)
with self.assertRaises(ValueError):
l = Clock(limits.MAX_FREQUENCY + 1)
valid_f = (limits.MAX_FREQUENCY - limits.MIN_FREQUENCY) / 2
with self.assertRaises(TypeError):
l = Clock(valid_f, '8')
with self.assertRaises(TypeError):
l = Clock(valid_f, -1)
with self.assertRaises(TypeError):
l = Clock(valid_f, 2)
l = Clock(limits.MIN_FREQUENCY, 1)
self.assertTrue(l.size() == 1 and l.read() == 1
and l.frequency() == limits.MIN_FREQUENCY)
l = Clock(limits.MAX_FREQUENCY)
self.assertTrue(l.size() == 1 and l.read() == 0
and l.frequency() == limits.MAX_FREQUENCY)
def test_run(self):
"Verifies correct time based simulation"
c = Clock(1, 0) # 1Hz
c.run(0)
self.assertTrue(c.read() == 0)
c.run(0.25)
self.assertTrue(c.read() == 0)
c.run(0.50)
self.assertTrue(c.read() == 1)
c.run(0.75)
self.assertTrue(c.read() == 1)
c.run(1.00)
self.assertTrue(c.read() == 0)
c.run(1.50)
self.assertTrue(c.read() == 1)
c.run(2)
self.assertTrue(c.read() == 0)
def test_generate(self):
"Check generate handler for valid and invalid message"
l = Clock(50)
m = None
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'state': '0'}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'state': -1}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'state': 2}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'state': 1}
rm = l.generate(m)
self.assertTrue('success' in rm and rm['success'])
self.assertTrue(l.read() == 1)
m = {'frequency': limits.MAX_FREQUENCY + 1}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'frequency': limits.MIN_FREQUENCY - 1}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'frequency': '0'}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'frequency': '0', 'state': '0'}
rm = l.generate(m)
self.assertTrue('error' in rm)
m = {'frequency': 10, 'state': '0'}
rm = l.generate(m)
self.assertTrue('error' in rm)
self.assertFalse(l.frequency() == 10)
self.assertTrue(l.read() == 1)
m = {'frequency': '10', 'state': 0}
rm = l.generate(m)
self.assertTrue('error' in rm)
self.assertFalse(l.frequency() == 10)
self.assertTrue(l.read() == 1)
m = {'frequency': 10, 'state': 0}
rm = l.generate(m)
self.assertTrue('success' in rm and rm['success'])
self.assertTrue(l.frequency() == 10)
self.assertTrue(l.read() == 0)
def test_read(self):
"Valid data on read"
l = Clock(10)
self.assertTrue(l.read() == 0)