1 /*
2 * Copyright (C) 2014 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 "androidfw/ResourceTypes.h"
18
19 #include "utils/String16.h"
20 #include "utils/String8.h"
21
22 #include "TestHelpers.h"
23 #include "data/basic/R.h"
24
25 using com::android::basic::R;
26
27 namespace android {
28
29 class IdmapTest : public ::testing::Test {
30 protected:
SetUp()31 void SetUp() override {
32 std::string contents;
33 ASSERT_TRUE(ReadFileFromZipToString(GetTestDataPath() + "/basic/basic.apk", "resources.arsc",
34 &contents));
35 ASSERT_EQ(NO_ERROR, target_table_.add(contents.data(), contents.size(), 0, true));
36
37 ASSERT_TRUE(ReadFileFromZipToString(GetTestDataPath() + "/overlay/overlay.apk",
38 "resources.arsc", &overlay_data_));
39 ResTable overlay_table;
40 ASSERT_EQ(NO_ERROR, overlay_table.add(overlay_data_.data(), overlay_data_.size()));
41
42 char target_name[256] = "com.android.basic";
43 ASSERT_EQ(NO_ERROR, target_table_.createIdmap(overlay_table, 0, 0, target_name, target_name,
44 &data_, &data_size_));
45 }
46
TearDown()47 void TearDown() override {
48 ::free(data_);
49 }
50
51 ResTable target_table_;
52 std::string overlay_data_;
53 void* data_ = nullptr;
54 size_t data_size_ = 0;
55 };
56
TEST_F(IdmapTest,CanLoadIdmap)57 TEST_F(IdmapTest, CanLoadIdmap) {
58 ASSERT_EQ(NO_ERROR,
59 target_table_.add(overlay_data_.data(), overlay_data_.size(), data_, data_size_));
60 }
61
TEST_F(IdmapTest,OverlayOverridesResourceValue)62 TEST_F(IdmapTest, OverlayOverridesResourceValue) {
63 Res_value val;
64 ssize_t block = target_table_.getResource(R::string::test2, &val, false);
65 ASSERT_GE(block, 0);
66 ASSERT_EQ(Res_value::TYPE_STRING, val.dataType);
67 const ResStringPool* pool = target_table_.getTableStringBlock(block);
68 ASSERT_TRUE(pool != NULL);
69 ASSERT_LT(val.data, pool->size());
70
71 size_t str_len;
72 const char16_t* target_str16 = pool->stringAt(val.data, &str_len);
73 ASSERT_TRUE(target_str16 != NULL);
74 ASSERT_EQ(String16("test2"), String16(target_str16, str_len));
75
76 ASSERT_EQ(NO_ERROR,
77 target_table_.add(overlay_data_.data(), overlay_data_.size(), data_, data_size_));
78
79 ssize_t new_block = target_table_.getResource(R::string::test2, &val, false);
80 ASSERT_GE(new_block, 0);
81 ASSERT_NE(block, new_block);
82 ASSERT_EQ(Res_value::TYPE_STRING, val.dataType);
83 pool = target_table_.getTableStringBlock(new_block);
84 ASSERT_TRUE(pool != NULL);
85 ASSERT_LT(val.data, pool->size());
86
87 target_str16 = pool->stringAt(val.data, &str_len);
88 ASSERT_TRUE(target_str16 != NULL);
89 ASSERT_EQ(String16("test2-overlay"), String16(target_str16, str_len));
90 }
91
TEST_F(IdmapTest,OverlaidResourceHasSameName)92 TEST_F(IdmapTest, OverlaidResourceHasSameName) {
93 ASSERT_EQ(NO_ERROR,
94 target_table_.add(overlay_data_.data(), overlay_data_.size(), data_, data_size_));
95
96 ResTable::resource_name res_name;
97 ASSERT_TRUE(target_table_.getResourceName(R::array::integerArray1, false, &res_name));
98
99 ASSERT_TRUE(res_name.package != NULL);
100 ASSERT_TRUE(res_name.type != NULL);
101 ASSERT_TRUE(res_name.name != NULL);
102
103 EXPECT_EQ(String16("com.android.basic"), String16(res_name.package, res_name.packageLen));
104 EXPECT_EQ(String16("array"), String16(res_name.type, res_name.typeLen));
105 EXPECT_EQ(String16("integerArray1"), String16(res_name.name, res_name.nameLen));
106 }
107
108 constexpr const uint32_t kNonOverlaidResourceId = 0x7fff0000u;
109
TEST_F(IdmapTest,OverlayDoesNotIncludeNonOverlaidResources)110 TEST_F(IdmapTest, OverlayDoesNotIncludeNonOverlaidResources) {
111 // First check that the resource we're trying to not include when overlaid is present when
112 // the overlay is loaded as a standalone APK.
113 ResTable table;
114 ASSERT_EQ(NO_ERROR, table.add(overlay_data_.data(), overlay_data_.size(), 0, true));
115
116 Res_value val;
117 ssize_t block = table.getResource(kNonOverlaidResourceId, &val, false /*mayBeBag*/);
118 ASSERT_GE(block, 0);
119
120 // Now add the overlay and verify that the unoverlaid resource is gone.
121 ASSERT_EQ(NO_ERROR,
122 target_table_.add(overlay_data_.data(), overlay_data_.size(), data_, data_size_));
123 block = target_table_.getResource(kNonOverlaidResourceId, &val, false /*mayBeBag*/);
124 ASSERT_LT(block, 0);
125 }
126
127 } // namespace
128