Repository navigation
Expand file tree
/
Copy pathdynamic-timeouts_test.go
More file actions
207 lines (145 loc) · 4.72 KB
/
Copy pathdynamic-timeouts_test.go
File metadata and controls
207 lines (145 loc) · 4.72 KB
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
/*
* Minio Cloud Storage, (C) 2017 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"math/rand"
"testing"
"time"
)
func TestDynamicTimeoutSingleIncrease(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
initial := timeout.Timeout()
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogFailure()
}
adjusted := timeout.Timeout()
if initial >= adjusted {
t.Errorf("Failure to increase timeout, expected %v to be more than %v", adjusted, initial)
}
}
func TestDynamicTimeoutDualIncrease(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
initial := timeout.Timeout()
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogFailure()
}
adjusted := timeout.Timeout()
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogFailure()
}
adjustedAgain := timeout.Timeout()
if initial >= adjusted || adjusted >= adjustedAgain {
t.Errorf("Failure to increase timeout multiple times")
}
}
func TestDynamicTimeoutSingleDecrease(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
initial := timeout.Timeout()
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogSuccess(20 * time.Second)
}
adjusted := timeout.Timeout()
if initial <= adjusted {
t.Errorf("Failure to decrease timeout, expected %v to be less than %v", adjusted, initial)
}
}
func TestDynamicTimeoutDualDecrease(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
initial := timeout.Timeout()
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogSuccess(20 * time.Second)
}
adjusted := timeout.Timeout()
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogSuccess(20 * time.Second)
}
adjustedAgain := timeout.Timeout()
if initial <= adjusted || adjusted <= adjustedAgain {
t.Errorf("Failure to decrease timeout multiple times")
}
}
func TestDynamicTimeoutManyDecreases(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
initial := timeout.Timeout()
const successTimeout = 20 * time.Second
for l := 0; l < 100; l++ {
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogSuccess(successTimeout)
}
}
adjusted := timeout.Timeout()
// Check whether eventual timeout is between initial value and success timeout
if initial <= adjusted || adjusted <= successTimeout {
t.Errorf("Failure to decrease timeout appropriately")
}
}
func TestDynamicTimeoutHitMinimum(t *testing.T) {
const minimum = 30 * time.Second
timeout := newDynamicTimeout(time.Minute, minimum)
initial := timeout.Timeout()
const successTimeout = 20 * time.Second
for l := 0; l < 100; l++ {
for i := 0; i < dynamicTimeoutLogSize; i++ {
timeout.LogSuccess(successTimeout)
}
}
adjusted := timeout.Timeout()
// Check whether eventual timeout has hit the minimum value
if initial <= adjusted || adjusted != minimum {
t.Errorf("Failure to decrease timeout appropriately")
}
}
func testDynamicTimeoutAdjust(t *testing.T, timeout *dynamicTimeout, f func() float64) {
const successTimeout = 20 * time.Second
for i := 0; i < dynamicTimeoutLogSize; i++ {
rnd := f()
duration := time.Duration(float64(successTimeout) * rnd)
if duration < 100*time.Millisecond {
duration = 100 * time.Millisecond
}
if duration >= time.Minute {
timeout.LogFailure()
} else {
timeout.LogSuccess(duration)
}
}
}
func TestDynamicTimeoutAdjustExponential(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
rand.Seed(time.Now().UTC().UnixNano())
initial := timeout.Timeout()
for try := 0; try < 10; try++ {
testDynamicTimeoutAdjust(t, timeout, rand.ExpFloat64)
}
adjusted := timeout.Timeout()
if initial <= adjusted {
t.Errorf("Failure to decrease timeout, expected %v to be less than %v", adjusted, initial)
}
}
func TestDynamicTimeoutAdjustNormalized(t *testing.T) {
timeout := newDynamicTimeout(time.Minute, time.Second)
rand.Seed(time.Now().UTC().UnixNano())
initial := timeout.Timeout()
for try := 0; try < 10; try++ {
testDynamicTimeoutAdjust(t, timeout, func() float64 {
return 1.0 + rand.NormFloat64()
})
}
adjusted := timeout.Timeout()
if initial <= adjusted {
t.Errorf("Failure to decrease timeout, expected %v to be less than %v", adjusted, initial)
}
}