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chore: add create_random_string() test helper

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This commit is contained in:
Marcus Holland-Moritz 2023-12-30 20:13:17 +01:00
parent 9eb23bd7f3
commit 6d4153ca87
2 changed files with 21 additions and 12 deletions
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29
test/test_helpers.cpp
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@ -38,8 +38,7 @@
#include "mmap_mock.h"
#include "test_helpers.h"
namespace dwarfs {
namespace test {
namespace dwarfs::test {
namespace fs = std::filesystem;
@ -279,14 +278,8 @@ void os_access_mock::add_file(fs::path const& path, size_t size, bool random) {
break;
case 0:
add(path, st, [size, seed = rng()] {
std::mt19937_64 tmprng{seed};
std::string rv;
rv.resize(size);
std::uniform_int_distribution<> byte_dist{0, 255};
std::generate(rv.begin(), rv.end(), [&] { return byte_dist(tmprng); });
return rv;
});
add(path, st,
[size, seed = rng()] { return create_random_string(size, seed); });
return;
}
}
@ -495,5 +488,17 @@ std::vector<std::string> parse_args(std::string_view args) {
return rv;
}
} // namespace test
} // namespace dwarfs
std::string create_random_string(size_t size, std::mt19937_64& gen) {
std::string rv;
rv.resize(size);
std::uniform_int_distribution<> byte_dist{0, 255};
std::generate(rv.begin(), rv.end(), [&] { return byte_dist(gen); });
return rv;
}
std::string create_random_string(size_t size, size_t seed) {
std::mt19937_64 tmprng{seed};
return create_random_string(size, tmprng);
}
} // namespace dwarfs::test

4
test/test_helpers.h
View File

@ -26,6 +26,7 @@
#include <map>
#include <memory>
#include <optional>
#include <random>
#include <set>
#include <span>
#include <string>
@ -237,4 +238,7 @@ std::span<std::pair<simplestat, std::string_view> const> test_dirtree();
std::vector<std::string> parse_args(std::string_view args);
std::string create_random_string(size_t size, std::mt19937_64& gen);
std::string create_random_string(size_t size, size_t seed = 0);
} // namespace dwarfs::test