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#include "dirut.h"
#include "iterator.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/system/fs.h>
#include <util/system/file.h>
#include <util/generic/hash.h>
#include <util/generic/algorithm.h>
#include <util/random/mersenne.h>
static TString JoinWithNewline(const TVector<TString>& strings) {
TStringStream ss;
for (const auto& string : strings) {
ss << string << "\n";
}
return ss.Str();
}
class TDirIteratorTest: public TTestBase {
UNIT_TEST_SUITE(TDirIteratorTest);
UNIT_TEST(TestIt)
UNIT_TEST(TestError)
UNIT_TEST(TestLocal)
UNIT_TEST(TestSkip)
UNIT_TEST(TestSort)
UNIT_TEST_SUITE_END();
private:
class TDirHier {
public:
struct TPath {
TString Path;
int Type;
};
inline void AddFile(const TString& path) {
Add(path, 0);
}
inline void AddDir(const TString& path) {
Add(path, 1);
}
inline void Add(const TString& path, int type) {
const TPath p = {
path, type};
Add(p);
}
inline void Add(const TPath& path) {
switch (path.Type) {
case 0:
TFile(path.Path, CreateAlways | RdWr);
break;
case 1:
MakeDirIfNotExist(path.Path.data());
break;
case 2:
ythrow yexception() << "unknown path type";
}
Paths_.push_back(path);
Srch_[path.Path] = path;
}
inline int Type(const TString& path) {
THashMap<TString, TPath>::const_iterator it = Srch_.find(path);
UNIT_ASSERT(it != Srch_.end());
return it->second.Type;
}
inline bool Have(const TString& path, int type) {
return Type(path) == type;
}
inline ~TDirHier() {
for (size_t i = 0; i < Paths_.size(); ++i) {
NFs::Remove(Paths_[Paths_.size() - i - 1].Path);
}
}
private:
TVector<TPath> Paths_;
THashMap<TString, TPath> Srch_;
};
inline void TestLocal() {
TString dirname("." LOCSLASH_S);
TDirIterator d(dirname, FTS_NOCHDIR);
for (auto it = d.begin(); it != d.end(); ++it) {
}
}
inline void TestIt() {
TDirHier hier;
const TString dir = "tmpdir";
const TDirHier::TPath path = {dir, 1};
hier.Add(path);
for (size_t i = 0; i < 10; ++i) {
const TString dir1 = dir + LOCSLASH_C + ToString(i);
const TDirHier::TPath path1 = {dir1, 1};
hier.Add(path1);
for (size_t j = 0; j < 10; ++j) {
const TString subdir2 = ToString(j);
const TString dir2 = dir1 + LOCSLASH_C + subdir2;
const TDirHier::TPath path2 = {dir2, 1};
hier.Add(path2);
for (size_t k = 0; k < 3; ++k) {
const TString file = dir2 + LOCSLASH_C + "file" + ToString(k);
const TDirHier::TPath fpath = {file, 0};
hier.Add(fpath);
}
}
}
TDirIterator d(dir);
for (auto it = d.begin(); it != d.end(); ++it) {
UNIT_ASSERT(hier.Have(it->fts_path, it->fts_info != FTS_F));
}
}
inline void TestSkip() {
TDirHier hier;
const TString dir = "tmpdir";
const TDirHier::TPath path = {dir, 1};
hier.Add(path);
hier.AddDir(dir + LOCSLASH_C + "dir1");
hier.AddDir(dir + LOCSLASH_C + "dir1" + LOCSLASH_C + "dir2");
//
// Without skip
//
{
TDirIterator di(dir);
UNIT_ASSERT(di.Next());
UNIT_ASSERT_EQUAL(TStringBuf(di.Next()->fts_name), "dir1");
UNIT_ASSERT_EQUAL(TStringBuf(di.Next()->fts_name), "dir2");
UNIT_ASSERT_EQUAL(TStringBuf(di.Next()->fts_name), "dir2");
UNIT_ASSERT_EQUAL(TStringBuf(di.Next()->fts_name), "dir1");
UNIT_ASSERT(di.Next());
UNIT_ASSERT_EQUAL(di.Next(), nullptr);
}
//
// With skip
//
{
TDirIterator di(dir);
UNIT_ASSERT(di.Next());
auto ent = di.Next();
UNIT_ASSERT_EQUAL(TStringBuf(ent->fts_name), "dir1");
di.Skip(ent);
UNIT_ASSERT_EQUAL(TStringBuf(di.Next()->fts_name), "dir1");
UNIT_ASSERT(di.Next());
UNIT_ASSERT_EQUAL(di.Next(), nullptr);
}
}
inline void TestSort() {
TDirHier dh;
const TString dir("tmpdir");
//prepare fs
{
TMersenne<ui32> rnd;
const TString prefixes[] = {
"a", "b", "xxx", "111", ""};
dh.AddDir(dir);
for (size_t i = 0; i < 100; ++i) {
const TString fname = dir + LOCSLASH_C + prefixes[i % Y_ARRAY_SIZE(prefixes)] + ToString(rnd.GenRand());
dh.AddFile(fname);
}
}
TVector<TString> fnames;
{
TDirIterator d(dir, TDirIterator::TOptions().SetSortByName());
for (auto it = d.begin(); it != d.end(); ++it) {
if (it->fts_info == FTS_F) {
fnames.push_back(it->fts_name);
}
}
}
TVector<TString> sorted(fnames);
Sort(sorted.begin(), sorted.end());
UNIT_ASSERT_VALUES_EQUAL(JoinWithNewline(fnames), JoinWithNewline(sorted));
}
inline void TestError() {
UNIT_ASSERT_EXCEPTION(TDirIterator("./notexistingfilename"), TDirIterator::TError);
}
};
UNIT_TEST_SUITE_REGISTRATION(TDirIteratorTest);
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