138 lines
5 KiB
C++
138 lines
5 KiB
C++
/*
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* Copyright 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <string>
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#include <android-base/file.h>
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#include <gtest/gtest.h>
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#include "otautil/sysutil.h"
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TEST(SysUtilTest, InvalidArgs) {
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MemMapping mapping;
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// Invalid argument.
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ASSERT_FALSE(mapping.MapFile(""));
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}
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TEST(SysUtilTest, MapFileRegularFile) {
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TemporaryFile temp_file1;
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std::string content = "abc";
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ASSERT_TRUE(android::base::WriteStringToFile(content, temp_file1.path));
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// MemMapping::MapFile() should map the file to one range.
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MemMapping mapping;
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ASSERT_TRUE(mapping.MapFile(temp_file1.path));
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ASSERT_NE(nullptr, mapping.addr);
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ASSERT_EQ(content.size(), mapping.length);
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ASSERT_EQ(1U, mapping.ranges());
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}
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TEST(SysUtilTest, MapFileBlockMap) {
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// Create a file that has 10 blocks.
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TemporaryFile package;
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std::string content;
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constexpr size_t file_size = 4096 * 10;
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content.reserve(file_size);
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ASSERT_TRUE(android::base::WriteStringToFile(content, package.path));
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TemporaryFile block_map_file;
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std::string filename = std::string("@") + block_map_file.path;
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MemMapping mapping;
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// One range.
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std::string block_map_content = std::string(package.path) + "\n40960 4096\n1\n0 10\n";
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ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
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ASSERT_TRUE(mapping.MapFile(filename));
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ASSERT_EQ(file_size, mapping.length);
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ASSERT_EQ(1U, mapping.ranges());
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// It's okay to not have the trailing '\n'.
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block_map_content = std::string(package.path) + "\n40960 4096\n1\n0 10";
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ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
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ASSERT_TRUE(mapping.MapFile(filename));
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ASSERT_EQ(file_size, mapping.length);
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ASSERT_EQ(1U, mapping.ranges());
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// Or having multiple trailing '\n's.
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block_map_content = std::string(package.path) + "\n40960 4096\n1\n0 10\n\n\n";
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ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
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ASSERT_TRUE(mapping.MapFile(filename));
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ASSERT_EQ(file_size, mapping.length);
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ASSERT_EQ(1U, mapping.ranges());
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// Multiple ranges.
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block_map_content = std::string(package.path) + "\n40960 4096\n3\n0 3\n3 5\n5 10\n";
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ASSERT_TRUE(android::base::WriteStringToFile(block_map_content, block_map_file.path));
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ASSERT_TRUE(mapping.MapFile(filename));
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ASSERT_EQ(file_size, mapping.length);
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ASSERT_EQ(3U, mapping.ranges());
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}
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TEST(SysUtilTest, MapFileBlockMapInvalidBlockMap) {
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MemMapping mapping;
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TemporaryFile temp_file;
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std::string filename = std::string("@") + temp_file.path;
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// Block map file is too short.
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n0\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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// Block map file has unexpected number of lines.
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n2\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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// Invalid size/blksize/range_count.
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\nabc 4096\n1\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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// size/blksize/range_count don't match.
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n0 4096\n1\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 0\n1\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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ASSERT_TRUE(android::base::WriteStringToFile("/somefile\n4096 4096\n0\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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// Invalid block dev path.
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ASSERT_TRUE(android::base::WriteStringToFile("/doesntexist\n4096 4096\n1\n0 1\n", temp_file.path));
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ASSERT_FALSE(mapping.MapFile(filename));
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}
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TEST(SysUtilTest, StringVectorToNullTerminatedArray) {
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std::vector<std::string> args{ "foo", "bar", "baz" };
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auto args_with_nullptr = StringVectorToNullTerminatedArray(args);
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ASSERT_EQ(4, args_with_nullptr.size());
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ASSERT_STREQ("foo", args_with_nullptr[0]);
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ASSERT_STREQ("bar", args_with_nullptr[1]);
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ASSERT_STREQ("baz", args_with_nullptr[2]);
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ASSERT_EQ(nullptr, args_with_nullptr[3]);
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}
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