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
|
// Copyright 2016 Google Inc. All rights reserved.
//
// 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 com.google.archivepatcher.shared;
import java.util.HashMap;
import java.util.Map;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link DefaultDeflateCompatibilityWindow}.
*/
@RunWith(JUnit4.class)
@SuppressWarnings("javadoc")
public class DefaultDeflateCompatibilityWindowTest {
private DefaultDeflateCompatibilityWindow window = null;
private final JreDeflateParameters brokenParameters = JreDeflateParameters.of(1, 0, true);
/**
* Trivial subclass for testing, always fails compatibility checks.
*/
private class BrokenCompatibilityWindow extends DefaultDeflateCompatibilityWindow {
@Override
public Map<JreDeflateParameters, String> getBaselineValues() {
// Superclass's version is immutable, so make a copy.
Map<JreDeflateParameters, String> result =
new HashMap<JreDeflateParameters, String>(super.getBaselineValues());
result.put(brokenParameters, "foo");
return result;
}
}
private class InfallibleCompatibilityWindow extends DefaultDeflateCompatibilityWindow {
@Override
public Map<JreDeflateParameters, String> getBaselineValues() {
// Using the system values for the baseline means the baseline will always match :)
return getSystemValues();
}
}
@Before
public void setUp() {
window = new DefaultDeflateCompatibilityWindow();
}
@Test
public void testGetBaselineValues() {
// Basic sanity test: ensure it doesn't crash and isn't null, and contains all the values that
// we care about.
ensureHasAllKeys(window.getBaselineValues());
}
@Test
public void testGetSystemValues() {
// Basic sanity test: ensure it doesn't crash and isn't null, and contains all the values that
// we care about.
ensureHasAllKeys(window.getSystemValues());
}
private void ensureHasAllKeys(Map<JreDeflateParameters, String> mappings) {
for (int level = 1; level <= 9; level++) {
for (int strategy = 0; strategy <= 1; strategy++) {
Assert.assertTrue(mappings.containsKey(JreDeflateParameters.of(level, strategy, true)));
Assert.assertTrue(mappings.containsKey(JreDeflateParameters.of(level, strategy, false)));
}
}
// Manually scan for presence of the strategy-2 values, only set for compression level 1....
Assert.assertTrue(mappings.containsKey(JreDeflateParameters.of(1, 2, true)));
Assert.assertTrue(mappings.containsKey(JreDeflateParameters.of(1, 2, false)));
Assert.assertEquals(mappings.size(), 38);
}
@Test
public void testGetCorpus() {
// Basic sanity test: ensure it's a non-null, non-empty return.
byte[] corpus1 = window.getCorpus();
Assert.assertNotNull(corpus1);
Assert.assertTrue(corpus1.length > 0);
// Basic sanity test: ensure the corpus is distinct each time the method is called (i.e., the
// mutable object returned is independent of the actual corpus).
byte[] corpus2 = window.getCorpus();
Assert.assertArrayEquals(corpus1, corpus2);
Assert.assertNotSame(corpus1, corpus2);
}
@Test
public void testIsCompatible() {
// First do a coverage-only call, as it's not safe to assume compatibility in the unit test.
window.isCompatible();
// Now do a call that is guaranteed to fail.
BrokenCompatibilityWindow broken = new BrokenCompatibilityWindow();
Assert.assertFalse(broken.isCompatible());
// Now do a call that is guaranteed to succeed.
InfallibleCompatibilityWindow infallible = new InfallibleCompatibilityWindow();
Assert.assertTrue(infallible.isCompatible());
}
@Test
public void testGetIncompatibleValues() {
// First do a coverage-only call, as it's not safe to assume compatibility in the unit test.
Assert.assertNotNull(window.getIncompatibleValues());
// Now do a call that is guaranteed to produce failure data.
BrokenCompatibilityWindow brokenWindow = new BrokenCompatibilityWindow();
Map<JreDeflateParameters, String> incompatible = brokenWindow.getIncompatibleValues();
Assert.assertTrue(incompatible.containsKey(brokenParameters));
// Now do a call that is guaranteed to produce no failure data.
InfallibleCompatibilityWindow infallible = new InfallibleCompatibilityWindow();
Assert.assertTrue(infallible.getIncompatibleValues().isEmpty());
}
}
|
