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android_frameworks_base/cmds/idmap2/tests/TestHelpers.h
Ryan Mitchell e753ffef54 Idmap format changes for bidirectional lookup 
This change modifies the idmap file format to allow for target resources
to map to arbitrary type/value combinations and to allow overlay
resources to be mapped back to target resource ids so references to
overlay resources can appear as references to target resources at
runtime.

The mappings of target resources to overlay resources and vice-versa are
both encoded as sparse arrays. Instead of looking up a resource by
indexing into an array that maps to the overlay resource id, the runtime
will binary search over the sparse array to find the type and value that
overlays the target resource.

Bug: 135943783
Test: idmap2_tests
Change-Id: I5d5344cdb7fe35f4f2e8d6781016299dea5d1e20
2019-10-17 11:37:24 -07:00

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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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.
*/
#ifndef IDMAP2_TESTS_TESTHELPERS_H_
#define IDMAP2_TESTS_TESTHELPERS_H_
#include <string>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace android::idmap2 {
const unsigned char idmap_raw_data[] = {
// IDMAP HEADER
// 0x0: magic
0x49, 0x44, 0x4d, 0x50,
// 0x4: version
0x02, 0x00, 0x00, 0x00,
// 0x8: target crc
0x34, 0x12, 0x00, 0x00,
// 0xc: overlay crc
0x78, 0x56, 0x00, 0x00,
// 0x10: target path "targetX.apk"
0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x58, 0x2e, 0x61, 0x70, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// 0x110: overlay path "overlayX.apk"
0x6f, 0x76, 0x65, 0x72, 0x6c, 0x61, 0x79, 0x58, 0x2e, 0x61, 0x70, 0x6b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// DATA HEADER
// 0x210: target_package_id
0x7f,
// 0x211: overlay_package_id
0x7f,
// 0x212: target_entry_count
0x03, 0x00, 0x00, 0x00,
// 0x216: overlay_entry_count
0x03, 0x00, 0x00, 0x00,
// 0x21a: string_pool_offset
0x00, 0x00, 0x00, 0x00,
// 0x21e: string_pool_byte_length
0x00, 0x00, 0x00, 0x00,
// TARGET ENTRIES
// 0x222: 0x7f020000
0x00, 0x00, 0x02, 0x7f,
// 0x226: TYPE_REFERENCE
0x01,
// 0x227: 0x7f020000
0x00, 0x00, 0x02, 0x7f,
// 0x22b: 0x7f030000
0x00, 0x00, 0x03, 0x7f,
// 0x22f: TYPE_REFERENCE
0x01,
// 0x230: 0x7f030000
0x00, 0x00, 0x03, 0x7f,
// 0x234: 0x7f030002
0x02, 0x00, 0x03, 0x7f,
// 0x238: TYPE_REFERENCE
0x01,
// 0x239: 0x7f030001
0x01, 0x00, 0x03, 0x7f,
// OVERLAY ENTRIES
// 0x23d: 0x7f020000 -> 0x7f020000
0x00, 0x00, 0x02, 0x7f, 0x00, 0x00, 0x02, 0x7f,
// 0x245: 0x7f030000 -> 0x7f030000
0x00, 0x00, 0x03, 0x7f, 0x00, 0x00, 0x03, 0x7f,
// 0x24d: 0x7f030001 -> 0x7f030002
0x01, 0x00, 0x03, 0x7f, 0x02, 0x00, 0x03, 0x7f};
const unsigned int idmap_raw_data_len = 0x255;
std::string GetTestDataPath();
class Idmap2Tests : public testing::Test {
protected:
void SetUp() override {
#ifdef __ANDROID__
tmp_dir_path_ = "/data/local/tmp/idmap2-tests-XXXXXX";
#else
tmp_dir_path_ = "/tmp/idmap2-tests-XXXXXX";
#endif
EXPECT_NE(mkdtemp(const_cast<char*>(tmp_dir_path_.c_str())), nullptr)
<< "Failed to create temporary directory: " << strerror(errno);
target_apk_path_ = GetTestDataPath() + "/target/target.apk";
overlay_apk_path_ = GetTestDataPath() + "/overlay/overlay.apk";
idmap_path_ = tmp_dir_path_ + "/a.idmap";
}
void TearDown() override {
EXPECT_EQ(rmdir(tmp_dir_path_.c_str()), 0)
<< "Failed to remove temporary directory " << tmp_dir_path_ << ": " << strerror(errno);
}
const std::string& GetTempDirPath() {
return tmp_dir_path_;
}
const std::string& GetTargetApkPath() {
return target_apk_path_;
}
const std::string& GetOverlayApkPath() {
return overlay_apk_path_;
}
const std::string& GetIdmapPath() {
return idmap_path_;
}
private:
std::string tmp_dir_path_;
std::string target_apk_path_;
std::string overlay_apk_path_;
std::string idmap_path_;
};
} // namespace android::idmap2
#endif // IDMAP2_TESTS_TESTHELPERS_H_
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