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test: add inode_size_cache tests

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This commit is contained in:
Marcus Holland-Moritz 2024-08-24 18:11:06 +02:00
parent a0c2b6c26b
commit f0cd212c0e
1 changed files with 72 additions and 0 deletions
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72
test/dwarfs_test.cpp
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@ -1854,3 +1854,75 @@ TEST(filesystem, read) {
EXPECT_TRUE(ec);
EXPECT_EQ(ec.value(), EINVAL);
}
TEST(filesystem, inode_size_cache) {
std::mt19937_64 rng;
constexpr size_t kNumFragments{1000};
constexpr size_t kNumFiles{100};
std::uniform_int_distribution<size_t> file_fragments(1, 1024);
std::uniform_int_distribution<size_t> file_dist(0, kNumFiles - 1);
std::vector<std::string> fragments;
fragments.reserve(kNumFragments);
for (size_t i = 0; i < kNumFragments; ++i) {
fragments.emplace_back(test::create_random_string(256, rng));
}
std::vector<std::string> files;
files.reserve(kNumFiles);
for (size_t i = 0; i < kNumFiles; ++i) {
std::string file;
auto num_fragments = file_fragments(rng);
for (size_t j = 0; j < num_fragments; ++j) {
file.append(fragments[rng() % kNumFragments]);
}
files.emplace_back(std::move(file));
}
test::test_logger lgr;
auto input = std::make_shared<test::os_access_mock>();
input->add_dir("");
input->add_dir("a");
input->add_dir("b");
input->add_dir("c");
std::map<std::string, size_t> file_sizes;
auto add_file = [&](std::string const& path) {
auto const& content = files[file_dist(rng)];
file_sizes[path] = content.size();
input->add_file(path, content);
};
for (size_t i = 0; i < kNumFiles / 2; ++i) {
add_file(fmt::format("a/file{}", i));
add_file(fmt::format("b/file{}", i));
add_file(fmt::format("c/file{}", i));
}
writer::scanner_options options;
options.inode_size_cache_min_chunk_count = 32;
writer::segmenter::config cfg;
cfg.block_size_bits = 16;
cfg.blockhash_window_size = 7;
auto fsimage = build_dwarfs(lgr, input, "null", cfg, options);
auto mm = std::make_shared<test::mmap_mock>(std::move(fsimage));
reader::filesystem_options fsopts = {.metadata = {.check_consistency = true}};
reader::filesystem_v2 fs(lgr, *input, mm, fsopts);
// fs.dump(std::cout, {.features = reader::fsinfo_features::for_level(2)});
EXPECT_NO_THROW(fs.check(reader::filesystem_check_level::FULL));
for (auto const& [path, size] : file_sizes) {
auto dev = fs.find(path);
ASSERT_TRUE(dev);
auto iv = dev->inode();
auto st = fs.getattr(iv);
EXPECT_EQ(st.size(), size);
}
}