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"""
Unit test for dynamic parameters.
Tests __get__, __set__ and that inspect_value() and
get_value_generator() work.
Originally implemented as doctests in Topographica in the file
testDynamicParameter.txt
"""
import copy
import unittest
import param
import numbergen
class TestDynamicParameters(unittest.TestCase):
def setUp(self):
super().setUp()
param.Dynamic.time_dependent = False
class TestPO1(param.Parameterized):
x = param.Dynamic(default=numbergen.UniformRandom(lbound=-1,ubound=1,seed=1),doc="nothing")
y = param.Dynamic(default=1)
class TestPO2(param.Parameterized):
x = param.Dynamic(default=numbergen.UniformRandom(lbound=-1,ubound=1,seed=30))
y = param.Dynamic(default=1.0)
self.TestPO2 = TestPO2
self.TestPO1 = TestPO1
self.t1 = self.TestPO1()
self.t2 = self.TestPO1(x=numbergen.UniformRandom(lbound=-1,ubound=1,seed=10))
self.t3 = self.TestPO1(x=numbergen.UniformRandom(lbound=-1,ubound=1,seed=10))
self.t2.param.set_dynamic_time_fn(None)
self.t3.param.set_dynamic_time_fn(None)
self.t6 = self.TestPO2()
self.t7 = self.TestPO2()
class TestDynamicParameterBasics(TestDynamicParameters):
def test_set_dynamic_time_fn_x(self):
self.t1.param.set_dynamic_time_fn(None)
self.assertEqual(
self.t1.param['x']._value_is_dynamic(self.t1), True)
def test_set_dynamic_time_fn_y(self):
self.assertEqual(
self.t1.param['y']._value_is_dynamic(self.t1), False)
def test_inspect_x(self):
"no value generated yet"
self.assertEqual(self.t1.param.inspect_value('x'), None)
def test_inspect_y(self):
self.assertEqual(self.t1.param.inspect_value('y'), 1)
def test_inspect_y_set(self):
self.t1.y = 2
self.assertEqual(self.t1.param.inspect_value('y'), 2)
def test_set_dynamic_numbergen(self):
is_numbergen = isinstance(self.t2.param.get_value_generator('x'),
numbergen.UniformRandom)
self.assertEqual(is_numbergen, True)
def test_matching_numbergen_streams(self):
"check that t2 and t3 have identical streams"
self.assertEqual(self.t2.x, self.t3.x)
def test_numbergen_objects_distinct(self):
"check t2 and t3 do not share UniformRandom objects"
self.t2.x
self.assertNotEqual(self.t2.param.inspect_value('x'),
self.t3.param.inspect_value('x'))
def test_numbergen_inspect(self):
" inspect_value() should return last generated value "
self.t2.x # Call 1
self.t2.x # Call 2
t2_last_value = self.t2.x # advance t2 beyond t3
self.assertEqual(self.t2.param.inspect_value('x'),
t2_last_value)
# ensure last_value is not shared
self.assertNotEqual(self.t3.param.inspect_value('x'), t2_last_value)
def test_dynamic_value_instantiated(self):
t6_first_value = self.t6.x
self.assertNotEqual(self.t7.param.inspect_value('x'),
t6_first_value)
def test_non_dynamic_value_not_instantiated(self):
" non-dynamic value not instantiated"
self.TestPO2.y = 4
self.assertEqual(self.t6.y, 4)
self.assertEqual(self.t7.y, 4)
def test_dynamic_value_setting(self):
self.t6.y = numbergen.UniformRandom()
t8 = self.TestPO2()
self.TestPO2.y = 10
# t6 got a dynamic value, but shouldn't have changed Parameter's instantiate
self.assertEqual(t8.y, 10)
def test_setting_y_param_numbergen(self):
self.TestPO2.y=numbergen.UniformRandom() # now the Parameter instantiate should be true
t9 = self.TestPO2()
self.assertEqual('y' in t9._param__private.values, True)
def test_shared_numbergen(self):
"""
Instances of TestPO2 that don't have their own value for the
parameter share one UniformRandom object
"""
self.TestPO2.y=numbergen.UniformRandom() # now the Parameter instantiate should be true
self.assertEqual(self.t7.param.get_value_generator('y') is self.TestPO2().param['y'].default, True)
self.assertEqual(self.TestPO2().param['y'].default.__class__.__name__, 'UniformRandom')
def test_copy_match(self):
"check a copy is the same"
t9 = copy.deepcopy(self.t7)
self.assertEqual(t9.param.get_value_generator('y') is self.TestPO2().param['y'].default, True)
class TestDynamicTimeDependent(TestDynamicParameters):
def setUp(self):
super().setUp()
param.Dynamic.time_dependent = True
class TestPO3(param.Parameterized):
x = param.Dynamic(default=numbergen.UniformRandom(name='xgen',
time_dependent=True))
class TestPO4(self.TestPO1):
"Nested parameterized objects"
z = param.Parameter(default=self.TestPO1())
self.TestPO3 = TestPO3
self.TestPO4 = TestPO4
self.t10 = self.TestPO1()
self.t11 = TestPO3()
def test_dynamic_values_unchanged_dependent(self):
param.Dynamic.time_dependent = True
call_1 = self.t10.x
call_2 = self.t10.x
call_3 = self.t10.x
self.assertEqual(call_1, call_2)
self.assertEqual(call_2, call_3)
def test_dynamic_values_changed_independent(self):
param.Dynamic.time_dependent = False
call_1 = self.t10.x
call_2 = self.t10.x
call_3 = self.t10.x
self.assertNotEqual(call_1, call_2)
self.assertNotEqual(call_2, call_3)
def test_dynamic_values_change(self):
param.Dynamic.time_dependent = True
with param.Dynamic.time_fn as t:
t(0)
call_1 = self.t10.x
t += 1
call_2 = self.t10.x
t(0)
call_3 = self.t10.x
self.assertNotEqual(call_1, call_2)
self.assertNotEqual(call_1, call_3)
def test_dynamic_values_time_dependent(self):
param.Dynamic.time_dependent = True
with param.Dynamic.time_fn as t:
t(0)
call_1 = self.t11.x
t += 1
call_2 = self.t11.x
t(0)
call_3 = self.t11.x
self.assertNotEqual(call_1, call_2)
self.assertEqual(call_1, call_3)
def test_class_dynamic_values_change(self):
call_1 = self.TestPO3.x
call_2 = self.TestPO3.x
self.assertEqual(call_1, call_2)
with param.Dynamic.time_fn as t:
t += 1
call_3 = self.TestPO3.x
self.assertNotEqual(call_2, call_3)
def test_dynamic_value_change_independent(self):
t12 = self.TestPO1()
t12.param.set_dynamic_time_fn(None)
self.assertNotEqual(t12.x, t12.x)
self.assertEqual(t12.y, t12.y)
def test_dynamic_value_change_disabled(self):
" time_fn set on the UniformRandom() when t13.y was set"
t13 = self.TestPO1()
t13.param.set_dynamic_time_fn(None)
t13.y = numbergen.UniformRandom()
self.assertNotEqual(t13.y, t13.y)
def test_dynamic_value_change_enabled(self):
" time_fn set on the UniformRandom() when t13.y was set"
t14 = self.TestPO1()
t14.y = numbergen.UniformRandom()
self.assertEqual(t14.y, t14.y)
def test_dynamic_time_fn_not_inherited(self):
" time_fn not inherited"
t15 = self.TestPO4()
t15.param.set_dynamic_time_fn(None)
with param.Dynamic.time_fn as t:
call_1 = t15.z.x
t += 1
call_2 = t15.z.x
self.assertNotEqual(call_1, call_2)
class TestDynamicSharedNumbergen(TestDynamicParameters):
"Check shared generator"
def setUp(self):
super().setUp()
self.shared = numbergen.UniformRandom(lbound=-1,ubound=1,seed=20)
def test_dynamic_shared_numbergen(self):
param.Dynamic.time_dependent = True
t11 = self.TestPO1(x=self.shared)
t12 = self.TestPO1(x=self.shared)
with param.Dynamic.time_fn as t:
t += 1
call_1 = t11.x
self.assertEqual(call_1, t12.x)
t += 1
self.assertNotEqual(call_1, t12.x)
# Commented out block in the original doctest version.
# Maybe these are features originally planned but never implemented
# It is not yet possible to set time_fn for a Parameter instance
# >>> class TestPO5(param.Parameterized):
# ... x = param.Dynamic(default=numbergen.UniformRandom(),dynamic_time_fn=None)
# We currently don't support iterators/generators in Dynamic unless
# they're wrapped.
# >>> i = iter([1,2,3])
# >>> t11.x = i
# >>> topo.sim.run(1)
# >>> t11.x
# 1
# >>> def gen():
# ... yield 2
# ... yield 4
# ... yield 6
# >>> g = gen()
# >>> t11.x = g
# >>> t11.x
# 2
# >>> topo.sim.run(1)
# >>> t11.x
# 4
|
