1 /*
2 * Copyright (C) 2019 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
17 #include "deploy_patch_generator.h"
18 #include "apk_archive.h"
19 #include "patch_utils.h"
20
21 #include <android-base/file.h>
22 #include <gtest/gtest.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <string>
26
27 #include "sysdeps.h"
28
29 using namespace com::android::fastdeploy;
30
GetTestFile(const std::string & name)31 static std::string GetTestFile(const std::string& name) {
32 return "fastdeploy/testdata/" + name;
33 }
34
35 struct TestPatchGenerator : DeployPatchGenerator {
36 using DeployPatchGenerator::BuildIdenticalEntries;
37 using DeployPatchGenerator::DeployPatchGenerator;
38 };
39
TEST(DeployPatchGeneratorTest,IdenticalFileEntries)40 TEST(DeployPatchGeneratorTest, IdenticalFileEntries) {
41 std::string apkPath = GetTestFile("rotating_cube-release.apk");
42 APKMetaData metadataA = PatchUtils::GetHostAPKMetaData(apkPath.c_str());
43 TestPatchGenerator generator(false);
44 std::vector<DeployPatchGenerator::SimpleEntry> entries;
45 generator.BuildIdenticalEntries(entries, metadataA, metadataA);
46 // Expect the entry count to match the number of entries in the metadata.
47 const uint32_t identicalCount = entries.size();
48 const uint32_t entriesCount = metadataA.entries_size();
49 EXPECT_EQ(identicalCount, entriesCount);
50 }
51
TEST(DeployPatchGeneratorTest,NoDeviceMetadata)52 TEST(DeployPatchGeneratorTest, NoDeviceMetadata) {
53 std::string apkPath = GetTestFile("rotating_cube-release.apk");
54 // Get size of our test apk.
55 long apkSize = 0;
56 {
57 unique_fd apkFile(adb_open(apkPath.c_str(), O_RDWR));
58 apkSize = adb_lseek(apkFile, 0L, SEEK_END);
59 }
60
61 // Create a patch that is 100% different.
62 TemporaryFile output;
63 DeployPatchGenerator generator(true);
64 generator.CreatePatch(apkPath.c_str(), {}, output.fd);
65
66 // Expect a patch file that has a size at least the size of our initial APK.
67 long patchSize = adb_lseek(output.fd, 0L, SEEK_END);
68 EXPECT_GT(patchSize, apkSize);
69 }
70
TEST(DeployPatchGeneratorTest,ZeroSizePatch)71 TEST(DeployPatchGeneratorTest, ZeroSizePatch) {
72 std::string apkPath = GetTestFile("rotating_cube-release.apk");
73 ApkArchive archive(apkPath);
74 auto dump = archive.ExtractMetadata();
75 EXPECT_NE(dump.cd().size(), 0u);
76
77 APKMetaData metadata = PatchUtils::GetDeviceAPKMetaData(dump);
78
79 // Create a patch that is 100% the same.
80 TemporaryFile output;
81 output.DoNotRemove();
82 DeployPatchGenerator generator(true);
83 generator.CreatePatch(apkPath.c_str(), metadata, output.fd);
84
85 // Expect a patch file that is smaller than 0.5K.
86 int64_t patchSize = adb_lseek(output.fd, 0L, SEEK_END);
87 EXPECT_LE(patchSize, 512);
88 }
89