#ifndef MANTID_KERNEL_CHECKSUMHELPERTEST_H_
#define MANTID_KERNEL_CHECKSUMHELPERTEST_H_


#include "MantidKernel/System.h"
#include "MantidKernel/ChecksumHelper.h"

#include <Poco/File.h>
#include <cxxtest/TestSuite.h>
#include <fstream>

using namespace Mantid::Kernel;

class ChecksumHelperTest : public CxxTest::TestSuite
{
public:
  // This pair of boilerplate methods prevent the suite being created statically
  // This means the constructor isn't called when running other tests
  static ChecksumHelperTest *createSuite() { return new ChecksumHelperTest(); }
  static void destroySuite( ChecksumHelperTest *suite ) { delete suite; }


  void testSha1FromString()
  {
    std::string response = ChecksumHelper::sha1FromString("Test this string out for size");
    TSM_ASSERT_EQUALS("The calculated SHA-1 hash is not as expected", "c1c9af231c340826bdabd33eae076d5e532eba08", response);
  }

  void testSha1FromFile()
  {
    const std::string filename("ChecksumHelperTest_testSha1FromFile.txt");
    const std::string data = "ChecksumHelperTest_testSha1FromFile Test this string out for size in a file";
    createFile(filename,data);

    std::string response = ChecksumHelper::sha1FromFile(filename);
    TSM_ASSERT_EQUALS("The calculated SHA-1 hash is not as expected", "363cbe9c113b8bcba9e0aa94dbe45e67856ff26b", response);
    Poco::File(filename).remove();
  }

  void testGitSha1FromFile()
  {
    const std::string filename("ChecksumHelperTest_testGitSha1FromFile.txt");
    const std::string data = "ChecksumHelperTest_testGitSha1FromFile Test this string out for size in a file";
    createFile(filename,data);

    std::string response = ChecksumHelper::gitSha1FromFile(filename);
    TSM_ASSERT_EQUALS("The calculated git-hash is not as expected", "db46957d5afdb266b4b3321f3ce2b8887f190ff5", response);
    Poco::File(filename).remove();
  }  
  
  void testGitSha1FromFileWithLinuxLineEndings()
  {
    const std::string filename("ChecksumHelperTest_testGitSha1FromFileWithLinuxLineEndings.txt");
    const std::string data = "ChecksumHelperTest_testGitSha1FromFileWithLinuxLineEndings\nTest this string out for size\n in a file";
    createFile(filename,data);

    std::string response = ChecksumHelper::gitSha1FromFile(filename);
    TSM_ASSERT_EQUALS("The calculated git-hash is not as expected", "7e78655a4e48aa2fbd4a3f1aec4043009e342e31", response);
    Poco::File(filename).remove();
  }
    
  void testGitSha1FromFileWithWindowsLineEndings()
  {
    const std::string filename("ChecksumHelperTest_testGitSha1FromFileWithWindowsLineEndings.txt");
    const std::string data = "ChecksumHelperTest_testGitSha1FromFileWithWindowsLineEndings\r\nTest this string out for size\r\n in a file";
    createFile(filename,data);

    std::string response = ChecksumHelper::gitSha1FromFile(filename);
    TSM_ASSERT_EQUALS("The calculated git-hash is not as expected", "23dcaeaefce51ed7cae98f6420f67e0ba0e2058a", response);
    Poco::File(filename).remove();
  }

  void createFile(const std::string& fileName, const std::string& data)
  {
    //has to be saved as binary so it doesn't mess with line endings
    std::ofstream file(fileName.c_str(), std::ofstream::binary);
    file << data;
    file.close();
  }
};


#endif /* MANTID_KERNEL_CHECKSUMHELPERTEST_H_ */