boringssl/crypto/lhash/lhash_test.cc
David Benjamin ca0642287d Rewrite lhash_test in C++.
Use a std::map as the dummy lhash and use unique_ptr. This also improves
the test to check on pointer equality; we wish to ensure the lhash
stores the particular pointer value we asked for.

dummy_lh now also owns the pointers. It makes things simpler and since
LHASH doesn't free things, we weren't getting anything out of testing
that.

Change-Id: I97159175ca79a5874586650f272a7846100395e1
Reviewed-on: https://boringssl-review.googlesource.com/12976
Reviewed-by: Adam Langley <agl@google.com>
2017-01-04 01:38:45 +00:00

132 lines
3.3 KiB
C++

/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#if !defined(_POSIX_C_SOURCE)
#define _POSIX_C_SOURCE 201410L
#endif
#include <openssl/crypto.h>
#include <openssl/lhash.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory>
#include <map>
#include <string>
#include <utility>
static std::unique_ptr<char[]> RandString(void) {
unsigned len = 1 + (rand() % 3);
std::unique_ptr<char[]> ret(new char[len + 1]);
for (unsigned i = 0; i < len; i++) {
ret[i] = '0' + (rand() & 7);
}
ret[len] = 0;
return ret;
}
struct FreeLHASH {
void operator()(_LHASH *lh) { lh_free(lh); }
};
static const char *Lookup(
std::map<std::string, std::unique_ptr<char[]>> *dummy_lh, const char *key) {
// Using operator[] implicitly inserts into the map.
auto iter = dummy_lh->find(key);
if (iter == dummy_lh->end()) {
return nullptr;
}
return iter->second.get();
}
int main(int argc, char **argv) {
CRYPTO_library_init();
std::unique_ptr<_LHASH, FreeLHASH> lh(lh_new(NULL, NULL));
if (!lh) {
return 1;
}
// lh is expected to store a canonical instance of each string. dummy_lh
// mirrors what it stores for comparison. It also manages ownership of the
// pointers.
std::map<std::string, std::unique_ptr<char[]>> dummy_lh;
for (unsigned i = 0; i < 100000; i++) {
if (dummy_lh.size() != lh_num_items(lh.get())) {
fprintf(stderr, "Length mismatch\n");
return 1;
}
enum Action {
kRetrieve = 0,
kInsert,
kDelete,
};
Action action = static_cast<Action>(rand() % 3);
switch (action) {
case kRetrieve: {
std::unique_ptr<char[]> key = RandString();
void *value = lh_retrieve(lh.get(), key.get());
if (value != Lookup(&dummy_lh, key.get())) {
fprintf(stderr, "lh_retrieve failure\n");
return 1;
}
break;
}
case kInsert: {
std::unique_ptr<char[]> key = RandString();
void *previous;
if (!lh_insert(lh.get(), &previous, key.get())) {
return 1;
}
if (previous != Lookup(&dummy_lh, key.get())) {
fprintf(stderr, "lh_insert failure\n");
return 1;
}
dummy_lh[key.get()] = std::move(key);
break;
}
case kDelete: {
std::unique_ptr<char[]> key = RandString();
void *value = lh_delete(lh.get(), key.get());
if (value != Lookup(&dummy_lh, key.get())) {
fprintf(stderr, "lh_delete failure\n");
return 1;
}
dummy_lh.erase(key.get());
break;
}
default:
abort();
}
}
printf("PASS\n");
return 0;
}