slsDetectorPackage/slsSupportLib/tests/test-file_utils.cpp
2021-09-07 15:16:03 +02:00

27 lines
691 B
C++

#include "catch.hpp"
#include "sls/file_utils.h"
#include <iostream>
#include <stdio.h>
#include <unistd.h>
#include <vector>
TEST_CASE("Get size of empty file") {
char fname[] = "temfile_XXXXXX";
std::ifstream ifs(fname);
auto size = sls::getFileSize(ifs);
REQUIRE(size <= 0); // -1 or zero
}
TEST_CASE("Get size of file with data") {
constexpr size_t n_bytes = 137;
std::vector<char> data(n_bytes);
char fname[] = "temfile_XXXXXX";
int fh = mkstemp(fname);
write(fh, data.data(), n_bytes);
std::ifstream ifs(fname);
auto size = sls::getFileSize(ifs);
REQUIRE(size == n_bytes);
REQUIRE(ifs.tellg() == 0); // getting size resets pos!
}