Unverified Commit 1602d42a authored by Tommaso Tocci's avatar Tommaso Tocci
Browse files

test: add simple Write/Read test 

This is a very simple test that just write a file and read it, checking
for content match.
parent 3c51bf1c

ifs_test/CMakeLists.txt

+1 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ add_executable(ifs_test_IO ${SOURCE_FILES_IO}) 
set(SOURCE_FILES_TEMP main_temp.cpp)

add_executable(ifs_test_temp ${SOURCE_FILES_TEMP})



add_executable(ifs_test_wr wr_test.cpp)



find_package(MPI)

if(${MPI_FOUND})

ifs_test/wr_test.cpp

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+64 −0
Original line number Diff line number Diff line 
/* Simple Write/Read Test

 *

 * - open a file

 * - write some content

 * - close

 * - open the same file in read mode

 * - read the content

 * - check if the content match

 * - close

 */



#include <iostream>

#include <fcntl.h>

#include <unistd.h>

#include <cstring>



using namespace std;



int main(int argc, char* argv[]) {



    string p = "/tmp/mountdir/file"s;

    char buffIn[] = "oops.";

    char *buffOut = new char[strlen(buffIn)];



    

    /* Write the file */



    auto fd = open(p.c_str(), O_WRONLY | O_CREAT, 0777);

    if(fd < 0){

        cerr << "Error opening file (write)" << endl;

        return -1;

    }

    auto nw = write(fd, buffIn, strlen(buffIn));

    if(nw != strlen(buffIn)){

        cerr << "Error writing file" << endl;

        return -1;

    }

    

    if(close(fd) != 0){

        cerr << "Error closing file" << endl;

        return -1;

    }





    /* Read the file back */



    fd = open(p.c_str(), O_RDONLY);

    if(fd < 0){

        cerr << "Error opening file (read)" << endl;

        return -1;

    }



    auto nr = read(fd, buffOut, strlen(buffIn));

    if(nr != strlen(buffIn)){

        cerr << "Error reading file" << endl;

        return -1;

    }



    if(strncmp( buffIn, buffOut, strlen(buffIn)) != 0){

        cerr << "File content mismatch" << endl;

        return -1;

    }

    close(fd);

}