AppDataDirGuesserTest.java revision 524c023fb37b41e06b69f1b696100dd465acb353 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.dexmaker;
18
19import java.io.File;
20import java.util.Arrays;
21import java.util.HashSet;
22import java.util.Set;
23import junit.framework.TestCase;
24
25public final class AppDataDirGuesserTest extends TestCase {
26    public void testGuessCacheDir_SimpleExample() {
27        guessCacheDirFor("/data/app/a.b.c.apk").shouldGive("/data/data/a.b.c/cache");
28        guessCacheDirFor("/data/app/a.b.c.tests.apk").shouldGive("/data/data/a.b.c.tests/cache");
29    }
30
31    public void testGuessCacheDir_MultipleResultsSeparatedByColon() {
32        guessCacheDirFor("/data/app/a.b.c.apk:/data/app/d.e.f.apk")
33                .shouldGive("/data/data/a.b.c/cache", "/data/data/d.e.f/cache");
34    }
35
36    public void testGuessCacheDir_NotWriteableSkipped() {
37        guessCacheDirFor("/data/app/a.b.c.apk:/data/app/d.e.f.apk")
38                .withNonWriteable("/data/data/a.b.c/cache")
39                .shouldGive("/data/data/d.e.f/cache");
40    }
41
42    public void testGuessCacheDir_StripHyphenatedSuffixes() {
43        guessCacheDirFor("/data/app/a.b.c-2.apk").shouldGive("/data/data/a.b.c/cache");
44    }
45
46    public void testGuessCacheDir_LeadingAndTrailingColonsIgnored() {
47        guessCacheDirFor("/data/app/a.b.c.apk:asdf:").shouldGive("/data/data/a.b.c/cache");
48        guessCacheDirFor(":asdf:/data/app/a.b.c.apk").shouldGive("/data/data/a.b.c/cache");
49    }
50
51    public void testGuessCacheDir_InvalidInputsGiveEmptyArray() {
52        guessCacheDirFor("").shouldGive();
53    }
54
55    public void testGuessCacheDir_JarsIgnored() {
56        guessCacheDirFor("/data/app/a.b.c.jar").shouldGive();
57        guessCacheDirFor("/system/framework/android.test.runner.jar").shouldGive();
58    }
59
60    public void testGuessCacheDir_RealWorldExample() {
61        String realPath = "/system/framework/android.test.runner.jar:" +
62                "/data/app/com.google.android.voicesearch.tests-2.apk:" +
63                "/data/app/com.google.android.voicesearch-1.apk";
64        guessCacheDirFor(realPath)
65                .withNonWriteable("/data/data/com.google.android.voicesearch.tests/cache")
66                .shouldGive("/data/data/com.google.android.voicesearch/cache");
67    }
68
69    private interface TestCondition {
70        TestCondition withNonWriteable(String... files);
71        void shouldGive(String... files);
72    }
73
74    private TestCondition guessCacheDirFor(final String path) {
75        final Set<String> notWriteable = new HashSet<String>();
76        return new TestCondition() {
77            public void shouldGive(String... files) {
78                AppDataDirGuesser guesser = new AppDataDirGuesser() {
79                    @Override
80                    public boolean isWriteableDirectory(File file) {
81                        return !notWriteable.contains(file.getAbsolutePath());
82                    }
83                    @Override
84                    boolean fileOrDirExists(File file) {
85                        return true;
86                    }
87                };
88                File[] results = guesser.guessPath(path);
89                assertNotNull("Null results for " + path, results);
90                assertEquals("Bad lengths for " + path, files.length, results.length);
91                for (int i = 0; i < files.length; ++i) {
92                    assertEquals("Element " + i, new File(files[i]), results[i]);
93                }
94            }
95
96            public TestCondition withNonWriteable(String... files) {
97                notWriteable.addAll(Arrays.asList(files));
98                return this;
99            }
100        };
101    }
102}
103