1 /* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
2
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15
16 #include "tensorflow/core/lib/monitoring/sampler.h"
17
18 #include "tensorflow/core/platform/test.h"
19
20 namespace tensorflow {
21 namespace monitoring {
22 namespace {
23
24 using histogram::Histogram;
25
EqHistograms(const Histogram & expected,const HistogramProto & actual_proto)26 void EqHistograms(const Histogram& expected,
27 const HistogramProto& actual_proto) {
28 Histogram actual;
29 ASSERT_TRUE(actual.DecodeFromProto(actual_proto));
30
31 EXPECT_EQ(expected.ToString(), actual.ToString());
32 }
33
34 auto* sampler_with_labels =
35 Sampler<1>::New({"/tensorflow/test/sampler_with_labels",
36 "Sampler with one label.", "MyLabel"},
37 Buckets::Explicit({10.0, 20.0}));
38
TEST(LabeledSamplerTest,InitializedEmpty)39 TEST(LabeledSamplerTest, InitializedEmpty) {
40 Histogram empty;
41 EqHistograms(empty, sampler_with_labels->GetCell("Empty")->value());
42 }
43
TEST(LabeledSamplerTest,ExplicitBucketBoundaries)44 TEST(LabeledSamplerTest, ExplicitBucketBoundaries) {
45 // Sampler automatically adds DBL_MAX to the list of buckets.
46 Histogram expected({10.0, 20.0, DBL_MAX});
47 auto* cell = sampler_with_labels->GetCell("BucketBoundaries");
48 sampler_with_labels->GetCell("AddedToCheckPreviousCellValidity");
49 cell->Add(-1.0);
50 expected.Add(-1.0);
51 cell->Add(10.0);
52 expected.Add(10.0);
53 cell->Add(20.0);
54 expected.Add(20.0);
55 cell->Add(31.0);
56 expected.Add(31.0);
57
58 EqHistograms(expected, cell->value());
59 }
60
61 auto* init_sampler_without_labels =
62 Sampler<0>::New({"/tensorflow/test/init_sampler_without_labels",
63 "Sampler without labels initialized as empty."},
64 Buckets::Explicit(std::vector<double>{1.5, 2.8}));
65
TEST(UnlabeledSamplerTest,InitializedEmpty)66 TEST(UnlabeledSamplerTest, InitializedEmpty) {
67 Histogram empty;
68 EqHistograms(empty, init_sampler_without_labels->GetCell()->value());
69 }
70
71 auto* sampler_without_labels =
72 Sampler<0>::New({"/tensorflow/test/sampler_without_labels",
73 "Sampler without labels initialized as empty."},
74 Buckets::Explicit({1.5, 2.8}));
75
TEST(UnlabeledSamplerTest,ExplicitBucketBoundaries)76 TEST(UnlabeledSamplerTest, ExplicitBucketBoundaries) {
77 // Sampler automatically adds DBL_MAX to the list of buckets.
78 Histogram expected({1.5, 2.8, DBL_MAX});
79 auto* cell = sampler_without_labels->GetCell();
80 cell->Add(-1.0);
81 expected.Add(-1.0);
82 cell->Add(2.0);
83 expected.Add(2.0);
84 cell->Add(31.0);
85 expected.Add(31.0);
86
87 EqHistograms(expected, cell->value());
88 }
89
90 auto* sampler_with_exponential =
91 Sampler<1>::New({"/tensorflow/test/sampler_with_exponential",
92 "Sampler with exponential buckets.", "MyLabel"},
93 // So limits are {1, 2, 4}.
94 Buckets::Exponential(1, 2, 3));
95
TEST(ExponentialSamplerTest,ExponentialBucketBoundaries)96 TEST(ExponentialSamplerTest, ExponentialBucketBoundaries) {
97 // Sampler automatically adds DBL_MAX to the list of buckets.
98 Histogram expected({1.0, 2.0, 4.0, DBL_MAX});
99 auto* cell = sampler_with_exponential->GetCell("BucketBoundaries");
100 sampler_with_exponential->GetCell("AddedToCheckPreviousCellValidity");
101 cell->Add(-1.0);
102 expected.Add(-1.0);
103 cell->Add(0.5);
104 expected.Add(0.5);
105 cell->Add(1.001);
106 expected.Add(1.001);
107 cell->Add(3.999);
108 expected.Add(3.999);
109 cell->Add(6.0);
110 expected.Add(6.0);
111
112 EqHistograms(expected, cell->value());
113 }
114
TEST(ExplicitSamplerTest,SameName)115 TEST(ExplicitSamplerTest, SameName) {
116 auto* same_sampler = Sampler<1>::New({"/tensorflow/test/sampler_with_labels",
117 "Sampler with one label.", "MyLabel"},
118 Buckets::Explicit({10.0, 20.0}));
119 EXPECT_TRUE(sampler_with_labels->GetStatus().ok());
120 EXPECT_FALSE(same_sampler->GetStatus().ok());
121 delete same_sampler;
122 }
123
124 } // namespace
125 } // namespace monitoring
126 } // namespace tensorflow
127