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
25using ::com::android::basic::R;
26
27namespace android {
28
29class IdmapTest : public ::testing::Test {
30 protected:
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
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
57TEST_F(IdmapTest, CanLoadIdmap) {
58  ASSERT_EQ(NO_ERROR,
59            target_table_.add(overlay_data_.data(), overlay_data_.size(), data_, data_size_));
60}
61
62TEST_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
92TEST_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
108constexpr const uint32_t kNonOverlaidResourceId = 0x7fff0000u;
109
110TEST_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