thin-provisioning-tools/unit-tests/thin_metadata_t.cc

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#include "gmock/gmock.h"
#include "thin-provisioning/metadata.h"
#include <errno.h>
#include <linux/fs.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
using namespace std;
using namespace persistent_data;
using namespace testing;
using namespace thin_provisioning;
//----------------------------------------------------------------
namespace {
// FIXME: duplication with block.tcc, factor out a file_utils unit
void rm_f(string path) {
struct stat info;
int r = ::stat(path.c_str(), &info);
if (r) {
if (errno == ENOENT)
return;
else {
cerr << "errno == " << errno << endl;
throw runtime_error("stat failed");
}
}
if (!S_ISREG(info.st_mode))
throw runtime_error("path isn't a file");
::unlink(path.c_str());
}
void create_sized_file(string const &path, uint64_t file_size) {
int fd = ::open(path.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0666);
if (fd < 0)
throw runtime_error("open_file failed");
int r = ::lseek(fd, file_size - 1, SEEK_SET);
if (r < 0)
throw runtime_error("lseek failed");
char c = '\0';
r = ::write(fd, &c, 1);
if (r < 0)
throw runtime_error("::write failed");
if (r != 1)
throw runtime_error("insufficient bytes written");
::close(fd);
}
}
//----------------------------------------------------------------
TEST(ThinMetadataTests, create)
{
string path("./metadata.bin");
rm_f(path);
create_sized_file(path, 4096 * 1024);
metadata::ptr md(new metadata(path, metadata::CREATE, 128, 102400));
}
//----------------------------------------------------------------