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test_types.py
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test_types.py
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import ctypes
import struct
from . import base
import mmstats
class TestTypes(base.MmstatsTestCase):
def test_ints(self):
class MyStats(mmstats.MmStats):
zebras = mmstats.IntField()
apples = mmstats.UIntField()
oranges = mmstats.UIntField()
mmst = MyStats(filename='mmstats-test-ints')
# Basic format
self.assertEqual(mmst._mmap[0], '\x01')
self.assertTrue('apples\x01\x00I' in mmst._mmap.raw)
self.assertTrue('oranges\x01\x00I' in mmst._mmap.raw)
self.assertTrue('zebras\x01\x00i' in mmst._mmap.raw)
# Stat manipulation
self.assertEqual(mmst.apples, 0)
self.assertEqual(mmst.oranges, 0)
self.assertEqual(mmst.zebras, 0)
mmst.apples = 1
self.assertEqual(mmst.apples, 1)
self.assertEqual(mmst.oranges, 0)
self.assertEqual(mmst.zebras, 0)
mmst.zebras = -9001
self.assertEqual(mmst.apples, 1)
self.assertEqual(mmst.oranges, 0)
self.assertEqual(mmst.zebras, -9001)
mmst.apples = -100
self.assertEqual(mmst.apples, (2**32)-100)
def test_shorts(self):
class ShortFields(mmstats.MmStats):
a = mmstats.ShortField()
b = mmstats.UShortField()
s = ShortFields(filename='mmstats-test-shorts')
self.assertEqual(s.a, 0, s.a)
self.assertEqual(s.b, 0, s.b)
s.a = -1
self.assertEqual(s.a, -1, s.a)
self.assertEqual(s.b, 0, s.b)
s.b = (2**16)-1
self.assertEqual(s.a, -1, s.a)
self.assertEqual(s.b, (2**16)-1, s.b)
s.b = -2
self.assertEqual(s.a, -1, s.a)
self.assertEqual(s.b, (2**16)-2, s.b)
def test_bools(self):
class BoolFields(mmstats.MmStats):
a = mmstats.BoolField()
b = mmstats.BoolField(initial=True)
s = BoolFields(filename='mmstats-test-bools')
self.assertTrue('a\x01\x00?\xff\x00' in s._mmap[:], repr(s._mmap[:30]))
self.assertTrue('b\x01\x00?\xff\x01' in s._mmap[:], repr(s._mmap[:30]))
self.assertTrue(s.a is False, s.a)
self.assertTrue(s.b is True, s.b)
s.a = 'Anything truthy at all'
self.assertTrue(s.a is True, s.a)
self.assertTrue(s.b is True, s.b)
s.a = [] # Anything falsey
self.assertTrue(s.a is False, s.a)
self.assertTrue(s.b is True, s.b)
s.b = False
s.a = s.b
self.assertTrue(s.a is False, s.a)
self.assertTrue(s.b is False, s.b)
def test_strings(self):
class StringStats(mmstats.BaseMmStats):
a = mmstats.StaticTextField(label="text", value="something cool")
m1 = StringStats(filename='mmstats-test-m1')
self.assertTrue(m1.a, 'something cool')
def test_mixed(self):
class MixedStats(mmstats.MmStats):
a = mmstats.UIntField()
b = mmstats.BoolField()
c = mmstats.IntField()
d = mmstats.BoolField(label='The Bool')
e = mmstats.ShortField(label='shortie')
m1 = MixedStats(label_prefix='m1::', filename='mmstats-test-m1')
m2 = MixedStats(label_prefix='m2::', filename='mmstats-test-m2')
self.assertTrue('m2::shortie' not in m1._mmap[:])
self.assertTrue('m2::shortie' in m2._mmap[:], repr(m2._mmap[:40]))
for i in range(10):
m1.a = i
m2.a = i * 2
m1.b = True
m2.b = False
m1.c = -i
m2.c = -i * 2
m1.d = False
m2.d = True
m1.e = 1
m2.e = i * 10
self.assertEqual(m1.a, i, m1.a)
self.assertEqual(m2.a, i * 2, m2.a)
self.assertTrue(m1.b is True, m1.b)
self.assertTrue(m2.b is False, m2.b)
self.assertEqual(m1.c, -i, m1.c)
self.assertEqual(m2.c, -i * 2, m2.c)
self.assertTrue(m1.d is False, m1.d)
self.assertTrue(m2.d is True, m2.d)
self.assertEqual(m1.e, 1, m1.e)
self.assertEqual(m2.e, 90, m2.e)
def test_counter_sz(self):
self.assertEquals(ctypes.sizeof(mmstats.CounterField.buffer_type), 8)
self.assertEquals(
struct.calcsize(mmstats.CounterField.type_signature), 8)
def test_counter(self):
class SimpleCounter(mmstats.MmStats):
counter = mmstats.CounterField()
s = SimpleCounter(filename='mmstats-test_counter')
self.assertEqual(s.counter.value, 0)
s.counter.inc()
self.assertEqual(s.counter.value, 1)
s.counter.inc()
self.assertEqual(s.counter.value, 2)
s.counter.inc()
self.assertEqual(s.counter.value, 3)
s.counter.inc(-4)
self.assertNotEqual(s.counter.value, -1)
self.assertNotEqual(s.counter.value, 0)
s.counter.value = 0
self.assertEqual(s.counter.value, 0)
def test_floats(self):
class FloatTest(mmstats.MmStats):
f = mmstats.FloatField()
d = mmstats.DoubleField()
ft = FloatTest(filename='mmstats-test_floats')
self.assertEqual(ft.f, 0.0)
self.assertEqual(ft.d, 0.0)
ft.d = ft.f = 1.0
self.assertEqual(ft.f, 1.0)
self.assertEqual(ft.d, 1.0)
ft.d = ft.f = -1.0
self.assertEqual(ft.f, -1.0)
self.assertEqual(ft.d, -1.0)
ft.d = ft.f = 1.0 / 3
self.assertTrue(ft.f > 0.3)
self.assertTrue(ft.d > 0.3)
self.assertTrue(ft.f < 0.4)
self.assertTrue(ft.d < 0.4)
def test_running_average(self):
class RATest(mmstats.MmStats):
avg = mmstats.RunningAverageField()
rat = RATest(filename='mmstats-test_running_average')
self.assertEqual(rat.avg.value, 0.0)
rat.avg.add(1)
self.assertEqual(rat.avg.value, 1.0)
rat.avg.add(1)
self.assertEqual(rat.avg.value, 1.0)
rat.avg.add(1)
self.assertEqual(rat.avg.value, 1.0)
rat.avg.add(-3)
self.assertEqual(rat.avg.value, 0.0)
rat.avg.add(1)
self.assertTrue(0 < rat.avg.value < 1)