/usr/share/pyshared/mdp/test/test_caching.py is in python-mdp 3.3-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 | """Test caching extension."""
from __future__ import with_statement
import tempfile
from _tools import *
requires_joblib = skip_on_condition(
"not mdp.config.has_joblib",
"This test requires the 'joblib' module.")
_counter = 0
class _CounterNode(mdp.Node):
def __init__(self):
super(_CounterNode, self).__init__()
def is_trainable(self):
return False
def _execute(self, x):
"""The execute method has the side effect of increasing
a global counter by one."""
global _counter
_counter += 1
return x
@requires_joblib
def test_caching_extension():
"""Test that the caching extension is working at the global level."""
global _counter
_counter = 0
node = _CounterNode()
# before decoration the global counter is incremented at every call
k = 0
for i in range(3):
x = mdp.numx.array([[i]], dtype='d')
for j in range(2):
k += 1
assert mdp.numx.all(node.execute(x) == x)
assert _counter == k
# reset counter
_counter = 0
# activate the extension
cachedir = tempfile.mkdtemp(prefix='mdp-tmp-joblib-cache.',
dir=py.test.mdp_tempdirname)
mdp.caching.activate_caching(cachedir=cachedir)
assert mdp.get_active_extensions() == ['cache_execute']
# after decoration the global counter is incremented for each new 'x'
for i in range(3):
x = mdp.numx.array([[i]], dtype='d')
for _ in range(2):
assert mdp.numx.all(node.execute(x) == x)
assert _counter == i + 1
# after deactivation
mdp.caching.deactivate_caching()
assert mdp.get_active_extensions() == []
# reset counter
_counter = 0
k = 0
for i in range(3):
x = mdp.numx.array([[i]], dtype='d')
for j in range(2):
k += 1
assert mdp.numx.all(node.execute(x) == x)
assert _counter == k
@requires_joblib
def test_different_instances_same_content():
global _counter
x = mdp.numx.array([[100.]], dtype='d')
cachedir = tempfile.mkdtemp(prefix='mdp-tmp-joblib-cache.',
dir=py.test.mdp_tempdirname)
mdp.caching.activate_caching(cachedir=cachedir)
node = _CounterNode()
_counter = 0
# add attribute to make instance unique
node.attr = 'unique'
# cache x
node.execute(x)
assert _counter == 1
# should be cached now
node.execute(x)
assert _counter == 1
# create new instance, make it also unique and check that
# result is still cached
_counter = 0
node = _CounterNode()
node.attr = 'unique and different'
node.execute(x)
assert _counter == 1
mdp.caching.deactivate_caching()
@requires_joblib
def test_caching_context_manager():
global _counter
node = _CounterNode()
_counter = 0
assert mdp.get_active_extensions() == []
cachedir = tempfile.mkdtemp(prefix='mdp-tmp-joblib-cache.',
dir=py.test.mdp_tempdirname)
with mdp.caching.cache(cachedir=cachedir):
assert mdp.get_active_extensions() == ['cache_execute']
for i in range(3):
x = mdp.numx.array([[i]], dtype='d')
for _ in range(2):
assert mdp.numx.all(node.execute(x) == x)
assert _counter == i + 1
assert mdp.get_active_extensions() == []
@requires_joblib
def test_class_caching():
"""Test that we can cache individual classes."""
cached = mdp.nodes.PCANode()
notcached = mdp.nodes.SFANode()
with mdp.caching.cache(cache_classes=[mdp.nodes.PCANode]):
assert cached.is_cached()
assert not notcached.is_cached()
@requires_joblib
def test_class_caching_functionality():
"""Test that cached classes really cache."""
global _counter
x = mdp.numx.array([[210]], dtype='d')
node = _CounterNode()
# here _CounterNode is not cached
_counter = 0
with mdp.caching.cache(cache_classes=[mdp.nodes.PCANode]):
node.execute(x)
assert _counter == 1
node.execute(x)
assert _counter == 2
# here _CounterNode is cached
_counter = 0
with mdp.caching.cache(cache_classes=[_CounterNode]):
node.execute(x)
assert _counter == 1
node.execute(x)
assert _counter == 1
@requires_joblib
def test_instance_caching():
"""Test that we can cache individual instances."""
cached = mdp.nodes.PCANode()
notcached = mdp.nodes.PCANode()
with mdp.caching.cache(cache_instances=[cached]):
assert cached.is_cached()
assert not notcached.is_cached()
@requires_joblib
def test_instance_caching_functionality():
"""Test that cached instances really cache."""
global _counter
x = mdp.numx.array([[130]], dtype='d')
node = _CounterNode()
othernode = _CounterNode()
# here _CounterNode is not cached
_counter = 0
with mdp.caching.cache(cache_instances=[othernode]):
node.execute(x)
assert _counter == 1
node.execute(x)
assert _counter == 2
# here _CounterNode is cached
_counter = 0
with mdp.caching.cache(cache_instances=[node]):
node.execute(x)
assert _counter == 1
node.execute(x)
assert _counter == 1
@requires_joblib
def test_preexecution_problem():
"""Test that automatic setting of e.g. input_dim does not stop
the caching extension from caching on the first run."""
global _counter
x = mdp.numx.array([[102.]])
node = _CounterNode()
# here _CounterNode is cached
_counter = 0
with mdp.caching.cache():
# on the first execution, input_dim and dtype are set ...
node.execute(x)
assert _counter == 1
# ... yet the result is cached
node.execute(x)
assert _counter == 1
@requires_joblib
def test_switch_cache():
"""Test changing cache directory while extension is active."""
global _counter
dir1 = tempfile.mkdtemp(prefix='mdp-tmp-joblib-cache.',
dir=py.test.mdp_tempdirname)
dir2 = tempfile.mkdtemp(prefix='mdp-tmp-joblib-cache.',
dir=py.test.mdp_tempdirname)
x = mdp.numx.array([[10]], dtype='d')
mdp.caching.activate_caching(cachedir=dir1)
node = _CounterNode()
_counter = 0
node.execute(x)
assert _counter == 1
node.execute(x)
assert _counter == 1
# now change path
mdp.caching.set_cachedir(cachedir=dir2)
node.execute(x)
assert _counter == 2
node.execute(x)
assert _counter == 2
mdp.caching.deactivate_caching()
@requires_joblib
def test_execute_magic():
"""Test calling execute with magic while caching."""
x = mdp.numx_rand.rand(100, 10)
node = mdp.nodes.PCANode()
with mdp.caching.cache():
y = node(x)
y2 = node(x)
assert_array_equal(y, y2)
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