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
|
"""Tests for variable store."""
import tensorflow.python.platform
import tensorflow as tf
from tensorflow.python.ops import variable_scope
class VariableStoreTest(tf.test.TestCase):
def testGetVar(self):
vs = variable_scope._get_default_variable_store()
v = vs.get_variable("v", [1])
v1 = vs.get_variable("v", [1])
assert v == v1
def testNameExists(self):
vs = variable_scope._get_default_variable_store()
# No check by default, so we can both create and get existing names.
v = vs.get_variable("v", [1])
v1 = vs.get_variable("v", [1])
assert v == v1
# When reuse is False, we fail when variables are already there.
vs.get_variable("w", [1], reuse=False) # That's ok.
with self.assertRaises(ValueError):
vs.get_variable("v", [1], reuse=False) # That fails.
# When reuse is True, we fail when variables are new.
vs.get_variable("v", [1], reuse=True) # That's ok.
with self.assertRaises(ValueError):
vs.get_variable("u", [1], reuse=True) # That fails.
def testNamelessStore(self):
vs = variable_scope._get_default_variable_store()
vs.get_variable("v1", [2])
vs.get_variable("v2", [2])
expected_names = ["%s:0" % name for name in ["v1", "v2"]]
self.assertEqual(set(expected_names),
set([v.name for v in vs._vars.values()]))
def testVarScopeIntializer(self):
with self.test_session() as sess:
init = tf.constant_initializer(0.3)
with variable_scope.variable_scope("tower") as tower:
with variable_scope.variable_scope("foo", initializer=init):
v = variable_scope.get_variable("v", [])
sess.run(tf.initialize_variables([v]))
self.assertAllClose(v.eval(), 0.3)
with variable_scope.variable_scope(tower, initializer=init):
w = variable_scope.get_variable("w", [])
sess.run(tf.initialize_variables([w]))
self.assertAllClose(w.eval(), 0.3)
def testGetVariableScope(self):
# Test the get_variable_scope() function and setting properties of result.
with self.test_session() as sess:
init = tf.constant_initializer(0.3)
with variable_scope.variable_scope("foo"):
new_init1 = variable_scope.get_variable_scope().initializer
self.assertEqual(new_init1, None)
# Check that we can set initializer like this.
variable_scope.get_variable_scope().set_initializer(init)
v = variable_scope.get_variable("v", [])
sess.run(tf.initialize_variables([v]))
self.assertAllClose(v.eval(), 0.3)
# Check that we can set reuse.
variable_scope.get_variable_scope().reuse_variables()
with self.assertRaises(ValueError): # Fail, w does not exist yet.
variable_scope.get_variable("w", [1])
# Check that the set initializer goes away.
new_init = variable_scope.get_variable_scope().initializer
self.assertEqual(new_init, None)
def testVarScope(self):
with self.test_session():
with variable_scope.variable_scope("tower") as tower:
self.assertEqual(tower.name, "tower")
with tf.name_scope("scope") as sc:
self.assertEqual(sc, "tower/scope/")
with variable_scope.variable_scope("foo"):
with variable_scope.variable_scope("bar") as bar:
self.assertEqual(bar.name, "foo/bar")
with tf.name_scope("scope") as sc:
self.assertEqual(sc, "foo/bar/scope/")
with variable_scope.variable_scope("foo"):
with variable_scope.variable_scope(tower, reuse=True) as tower_shared:
self.assertEqual(tower_shared.name, "tower")
with tf.name_scope("scope") as sc:
self.assertEqual(sc, "foo_1/scope/")
def testVarScopeNameScope(self):
with self.test_session():
with tf.name_scope("scope1"):
with variable_scope.variable_scope("tower") as tower:
with tf.name_scope("scope2") as sc2:
self.assertEqual(sc2, "scope1/tower/scope2/")
with variable_scope.variable_scope("tower"): # Re-enter adds suffix.
with tf.name_scope("scope2") as sc2:
self.assertEqual(sc2, "scope1/tower_1/scope2/")
with tf.name_scope("scope3"):
with variable_scope.variable_scope("tower"):
with tf.name_scope("scope2") as sc2:
self.assertEqual(sc2, "scope3/tower/scope2/")
with variable_scope.variable_scope(tower):
with tf.name_scope("scope2") as sc2:
self.assertEqual(sc2, "scope3/scope2/")
def testVarScopeGetVar(self):
with self.test_session():
with variable_scope.variable_scope("root"):
with variable_scope.variable_scope("towerA") as tower_a:
va = variable_scope.get_variable("v", [1])
self.assertEqual(va.name, "root/towerA/v:0")
with variable_scope.variable_scope(tower_a, reuse=True):
va2 = variable_scope.get_variable("v", [1])
self.assertEqual(va2, va)
with variable_scope.variable_scope("towerB"):
vb = variable_scope.get_variable("v", [1])
self.assertEqual(vb.name, "root/towerB/v:0")
with self.assertRaises(ValueError) as exc:
with variable_scope.variable_scope("towerA"):
va2 = variable_scope.get_variable("v", [1])
self.assertEqual(exc.exception.message[:12], "Over-sharing")
with variable_scope.variable_scope("towerA", reuse=True):
va2 = variable_scope.get_variable("v", [1])
self.assertEqual(va2, va)
with variable_scope.variable_scope("foo"):
with variable_scope.variable_scope("bar"):
v = variable_scope.get_variable("v", [1])
self.assertEqual(v.name, "root/foo/bar/v:0")
with variable_scope.variable_scope(tower_a, reuse=True):
va3 = variable_scope.get_variable("v", [1])
self.assertEqual(va, va3)
with self.assertRaises(ValueError) as exc:
with variable_scope.variable_scope(tower_a, reuse=True):
with variable_scope.variable_scope("baz"):
variable_scope.get_variable("v", [1])
self.assertEqual(exc.exception.message[:13], "Under-sharing")
with self.assertRaises(ValueError) as exc:
with variable_scope.variable_scope(tower_a, reuse=True):
variable_scope.get_variable("v", [2]) # Different shape.
self.assertEqual("shape" in exc.exception.message, True)
with self.assertRaises(ValueError) as exc:
with variable_scope.variable_scope(tower_a, reuse=True):
variable_scope.get_variable("v", [1], dtype=tf.int32)
self.assertEqual("dtype" in exc.exception.message, True)
if __name__ == "__main__":
tf.test.main()
|
