MD5Digest_test.cc

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#include "cetlib/MD5Digest.h"
#include <cassert>
#include <iostream>

using cet::MD5Digest;
using cet::MD5Result;

void
testGivenString(std::string const& s)
{
  MD5Digest dig1(s);
  MD5Result r1 = dig1.digest();

  MD5Digest dig2;
  dig2.append(s);
  MD5Result r2 = dig2.digest();
  assert(r1 == r2);

  // The result should be valid *iff* s is non-empty.
  assert(r1.isValid() == !s.empty());
  assert(r1.toString().size() == 32);
  assert(r1.compactForm().size() == 16);
}

void
testConversions()
{
  std::string data("aldjfakl\tsdjf34234 \najdf");
  MD5Digest dig(data);
  MD5Result r1 = dig.digest();
  assert(r1.isValid());
  std::string hexy = r1.toString();
  assert(hexy.size() == 32);
  MD5Result r2;
  r2.fromHexifiedString(hexy);
  assert(r1 == r2);
  assert(r1.toString() == r2.toString());
  assert(r1.compactForm() == r2.compactForm());
}

void
testEmptyString()
{
  std::string e;
  testGivenString(e);

  MD5Digest dig1;
  MD5Result r1 = dig1.digest();

  MD5Result r2;
  assert(r1 == r2);

  assert(!r1.isValid());
}

int
main()
{
  MD5Digest dig1;
  dig1.append("hello");
  MD5Digest dig2("hello");

  MD5Result r1 = dig1.digest();
  MD5Result r2 = dig2.digest();

  assert(r1 == r2);
  assert(!(r1 < r2));
  assert(!(r2 < r1));

  assert(r1.toString().size() == 32);

  testGivenString("a");
  testGivenString("{ }");
  testGivenString("abc 123 abc");
  testEmptyString();
  testConversions();
}