/*
 * Check: a unit test framework for C
 * Copyright (C) 2001, 2002 Arien Malec
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#include "../lib/libcompat.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "check.h"
#include "check_pack.h"
#include "check_error.h"
#include "check_check.h"
#include "check_msg.h"

static char errm[512];


START_TEST(test_pack_fmsg)
{
  FailMsg *fmsg;
  char *buf;
  enum ck_msg_type type;

  fmsg = (FailMsg *)emalloc (sizeof (FailMsg));

  fmsg->msg = (char *) "Hello, world!";
  pack (CK_MSG_FAIL, &buf, (CheckMsg *) fmsg);

  fmsg->msg = NULL;
  upack (buf, (CheckMsg *) fmsg, &type);

  ck_assert_msg (type == CK_MSG_FAIL,
	       "Bad type unpacked for FailMsg");

  ck_assert_msg (fmsg->msg != NULL,
           "Unpacked string is NULL, should be Hello, World!");

  if (strcmp (fmsg->msg, "Hello, world!") != 0) {
    snprintf (errm, sizeof(errm),
	      "Unpacked string is %s, should be Hello, World!",
	      fmsg->msg);
    fail (errm);
  }

  free (fmsg->msg);
  free (fmsg);
  free (buf);
}
END_TEST

START_TEST(test_pack_loc)
{
  LocMsg *lmsg;
  char *buf;
  enum ck_msg_type type;

  lmsg =(LocMsg *) emalloc (sizeof (LocMsg));
  lmsg->file = (char *) "abc123.c";
  lmsg->line = 125;

  pack (CK_MSG_LOC, &buf, (CheckMsg *) lmsg);
  lmsg->file = NULL;
  lmsg->line = 0;
  upack (buf, (CheckMsg *) lmsg, &type);

  ck_assert_msg (type == CK_MSG_LOC,
	       "Bad type unpacked for LocMsg");

  if (lmsg->line != 125) {
    snprintf (errm, sizeof (errm),
	     "LocMsg line was %d, should be %d",
	     lmsg->line, 125);
    fail (errm);
  }
  
  if (strcmp (lmsg->file, "abc123.c") != 0) {
    snprintf (errm, sizeof (errm),
              "LocMsg file was %s, should be abc123.c",
              lmsg->file);
    fail (errm);
  }

  free (lmsg->file);
  free (lmsg);
  free (buf);
}
END_TEST

START_TEST(test_pack_ctx)
{
  CtxMsg cmsg;
  char *buf;
  enum ck_msg_type type;

  cmsg.ctx = CK_CTX_SETUP;
  pack (CK_MSG_CTX, &buf, (CheckMsg *) &cmsg);

  cmsg.ctx = CK_CTX_TEARDOWN;
  upack (buf, (CheckMsg *) &cmsg, &type);

  ck_assert_msg (type == CK_MSG_CTX,
	       "Bad type unpacked for CtxMsg");

  if (cmsg.ctx != CK_CTX_SETUP) {
    snprintf (errm, sizeof (errm),
	     "CtxMsg ctx got %d, expected %d",
	     cmsg.ctx, CK_CTX_SETUP);
    fail (errm);
  }

  free (buf);
}
END_TEST


START_TEST(test_pack_len)
{
  CtxMsg cmsg;
  char *buf;
  int n = 0;
  enum ck_msg_type type;

  cmsg.ctx = CK_CTX_TEST;
  n = pack (CK_MSG_CTX, &buf, (CheckMsg *) &cmsg);
  ck_assert_msg (n > 0, "Return val from pack not set correctly");

  /* Value below may change with different implementations of pack */
  ck_assert_msg (n == 8, "Return val from pack not correct");
  n = upack (buf, (CheckMsg *) &cmsg, &type);
  if (n != 8) {
    snprintf (errm, sizeof (errm), "%d bytes read from upack, should be 8", n);
    fail (errm);
  }
  
  free (buf);
}
END_TEST

START_TEST(test_pack_abuse)
{
  char *buf;
  CtxMsg cmsg;
  enum ck_msg_type type;

  /* Should report -1 (e.g. invalid) if no buffer is passed */
  ck_assert_int_eq(pack(CK_MSG_CTX, NULL, (CheckMsg *) &cmsg), -1);

  /* Should report 0 (e.g. nothing packed) if no message is passed */
  ck_assert_int_eq(pack(CK_MSG_CTX, &buf, NULL), 0);

  /* Should report -1 (e.g. invalid) if no buffer is passed */
  ck_assert_int_eq(upack(NULL, (CheckMsg *) &cmsg, &type), -1);
}
END_TEST

START_TEST(test_pack_ctx_limit)
{
  CtxMsg cmsg;
  CtxMsg *cmsgp = NULL;
  char *buf;

  cmsg.ctx = (enum ck_result_ctx)-1;
  pack (CK_MSG_CTX, &buf, (CheckMsg *) &cmsg);
  pack (CK_MSG_CTX, &buf, (CheckMsg *) cmsgp);
}
END_TEST

START_TEST(test_pack_fail_limit)
{
  FailMsg fmsg;
  FailMsg *fmsgp = NULL;
  char *buf;
  enum ck_msg_type type;

  fmsg.msg = (char *) "";
  pack (CK_MSG_FAIL, &buf, (CheckMsg *) &fmsg);
  fmsg.msg = NULL;
  upack (buf, (CheckMsg *) &fmsg, &type);
  free (buf);
  ck_assert_msg (fmsg.msg != NULL,
               "Empty string not handled properly");
  ck_assert_msg (strcmp (fmsg.msg, "") == 0,
               "Empty string not handled properly");

  free (fmsg.msg);
  fmsg.msg = NULL;

  pack (CK_MSG_FAIL, &buf, (CheckMsg *) &fmsg);
  pack (CK_MSG_FAIL, &buf, (CheckMsg *) fmsgp);
}
END_TEST

START_TEST(test_pack_loc_limit)
{
  LocMsg lmsg;
  LocMsg *lmsgp = NULL;
  char *buf;
  enum ck_msg_type type;

  lmsg.file = (char *) "";
  lmsg.line = 0;
  pack (CK_MSG_LOC, &buf, (CheckMsg *) &lmsg);
  lmsg.file = NULL;
  upack (buf, (CheckMsg *) &lmsg, &type);
  ck_assert_msg (lmsg.file != NULL,
	       "Empty string not handled properly");
  ck_assert_msg (strcmp (lmsg.file, "") == 0,
	       "Empty string not handled properly");
  free (lmsg.file);
  lmsg.file = NULL;

  pack (CK_MSG_LOC, &buf, (CheckMsg *) &lmsg);
  pack (CK_MSG_LOC, &buf, (CheckMsg *) lmsgp);
}
END_TEST

/* the ppack probably means 'pipe' pack */
#if defined(HAVE_FORK) && HAVE_FORK==1
START_TEST(test_ppack)
{
  FILE * result_file;
  char * result_file_name = NULL;
  CtxMsg cmsg;
  LocMsg lmsg;
  FailMsg fmsg;
  RcvMsg *rmsg;
  
  cmsg.ctx = CK_CTX_TEST;
  lmsg.file = (char *) "abc123.c";
  lmsg.line = 10;
  fmsg.msg = (char *) "oops";
  result_file = open_tmp_file(&result_file_name);
  free(result_file_name);
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  ppack (result_file, CK_MSG_LOC, (CheckMsg *) &lmsg);
  ppack (result_file, CK_MSG_FAIL, (CheckMsg *) &fmsg);

  rewind(result_file);
  rmsg = punpack (result_file);

  ck_assert_msg (rmsg != NULL,
	       "Return value from ppack should always be malloc'ed");
  ck_assert_msg (rmsg->lastctx == CK_CTX_TEST,
	       "CTX not set correctly in ppack");
  ck_assert_msg (rmsg->fixture_line == -1,
	       "Default fixture loc not correct");
  ck_assert_msg (rmsg->fixture_file == NULL,
	       "Default fixture loc not correct");
  ck_assert_msg (rmsg->test_line == 10,
	       "Test line not received correctly");
  ck_assert_msg (strcmp(rmsg->test_file,"abc123.c") == 0,
	       "Test file not received correctly");
  ck_assert_msg (strcmp(rmsg->msg, "oops") == 0,
	       "Failure message not received correctly");

  free(rmsg);
  fclose(result_file);
}
END_TEST

START_TEST(test_ppack_noctx)
{
  FILE * result_file;
  char * result_file_name = NULL;
  LocMsg lmsg;
  FailMsg fmsg;
  RcvMsg *rmsg;
  
  lmsg.file = (char *) "abc123.c";
  lmsg.line = 10;
  fmsg.msg = (char *) "oops";
  result_file = open_tmp_file(&result_file_name);
  free(result_file_name);
  ppack (result_file, CK_MSG_LOC, (CheckMsg *) &lmsg);
  ppack (result_file, CK_MSG_FAIL, (CheckMsg *) &fmsg);

  rewind(result_file);
  rmsg = punpack (result_file);

  ck_assert_msg (rmsg == NULL,
	       "Result should be NULL with no CTX");

  if (rmsg != NULL)
    free (rmsg);
  fclose(result_file);
}
END_TEST

START_TEST(test_ppack_onlyctx)
{
  FILE * result_file;
  char * result_file_name = NULL;
  CtxMsg cmsg;
  RcvMsg *rmsg;
  
  cmsg.ctx = CK_CTX_SETUP;
  result_file = open_tmp_file(&result_file_name);
  free(result_file_name);
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  rewind(result_file);
  rmsg = punpack (result_file);

  ck_assert_msg (rmsg != NULL && rmsg->msg == NULL,
	       "Result message should be NULL with only CTX");
  ck_assert_msg (rmsg->fixture_line == -1,
	       "Result loc line should be -1 with only CTX");
  ck_assert_msg (rmsg->test_line == -1,
	       "Result loc line should be -1 with only CTX");

  if (rmsg != NULL)
    free (rmsg);
  fclose(result_file);
}
END_TEST

START_TEST(test_ppack_multictx)
{
  FILE * result_file;
  char * result_file_name = NULL;
  CtxMsg cmsg;
  LocMsg lmsg;
  RcvMsg *rmsg;
  
  cmsg.ctx = CK_CTX_SETUP;
  lmsg.line = 5;
  lmsg.file = (char *) "abc123.c";
  result_file = open_tmp_file(&result_file_name);
  free(result_file_name);
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  ppack (result_file, CK_MSG_LOC, (CheckMsg *) &lmsg);
  cmsg.ctx = CK_CTX_TEST;
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  ppack (result_file, CK_MSG_LOC, (CheckMsg *) &lmsg);
  cmsg.ctx = CK_CTX_TEARDOWN;
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  rewind(result_file);
  rmsg = punpack (result_file);

  ck_assert_msg (rmsg != NULL && rmsg->test_line == 5,
	       "Test loc not being preserved on CTX change");

  ck_assert_msg (rmsg->fixture_line == -1,
	       "Fixture not reset on CTX change");

  free (rmsg);
  fclose(result_file);
}
END_TEST

START_TEST(test_ppack_nofail)
{
  FILE * result_file;
  char * result_file_name = NULL;
  CtxMsg cmsg;
  LocMsg lmsg;
  RcvMsg *rmsg;

  lmsg.file = (char *) "abc123.c";
  lmsg.line = 10;
  cmsg.ctx = CK_CTX_SETUP;
  result_file = open_tmp_file(&result_file_name);
  free(result_file_name);
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  ppack (result_file, CK_MSG_LOC, (CheckMsg *) &lmsg);
  rewind (result_file);
  rmsg = punpack (result_file);

  ck_assert_msg (rmsg != NULL && rmsg->msg == NULL,
	       "Failure result should be NULL with no failure message");
  
  free (rmsg);
  fclose(result_file);
}
END_TEST

#define BIG_MSG_LEN 1037

START_TEST(test_ppack_big)
{
  FILE * result_file;
  char * result_file_name = NULL;
  CtxMsg cmsg;
  LocMsg lmsg;
  FailMsg fmsg;
  RcvMsg *rmsg;

  cmsg.ctx = CK_CTX_TEST;
  lmsg.file = (char *)emalloc (BIG_MSG_LEN);
  memset (lmsg.file,'a',BIG_MSG_LEN - 1);
  lmsg.file[BIG_MSG_LEN - 1] = '\0';
  lmsg.line = 10;
  fmsg.msg = (char *)emalloc (BIG_MSG_LEN);
  memset (fmsg.msg, 'a', BIG_MSG_LEN - 1);
  fmsg.msg[BIG_MSG_LEN - 1] = '\0';
  result_file = open_tmp_file(&result_file_name);
  free(result_file_name);
  ppack (result_file, CK_MSG_CTX, (CheckMsg *) &cmsg);
  ppack (result_file, CK_MSG_LOC, (CheckMsg *) &lmsg);
  ppack (result_file, CK_MSG_FAIL, (CheckMsg *) &fmsg);
  rewind (result_file);
  rmsg = punpack (result_file);

  ck_assert_msg (rmsg != NULL,
	       "Return value from ppack should always be malloc'ed");
  ck_assert_msg (rmsg->lastctx == CK_CTX_TEST,
	       "CTX not set correctly in ppack");
  ck_assert_msg (rmsg->test_line == 10,
	       "Test line not received correctly");
  ck_assert_msg (strcmp (rmsg->test_file, lmsg.file) == 0,
	       "Test file not received correctly");
  ck_assert_msg (strcmp (rmsg->msg, fmsg.msg) == 0,
	       "Failure message not received correctly");
  
  free (rmsg);
  free (lmsg.file);
  free (fmsg.msg);
  fclose(result_file);
}
END_TEST
#endif /* HAVE_FORK */

Suite *make_pack_suite(void)
{

  Suite *s;
  TCase *tc_core;
  TCase *tc_limit;

  s = suite_create ("Pack");
  tc_core = tcase_create ("Core");
  tc_limit = tcase_create ("Limit");

  suite_add_tcase (s, tc_core);
  tcase_add_test (tc_core, test_pack_fmsg);
  tcase_add_test (tc_core, test_pack_loc);
  tcase_add_test (tc_core, test_pack_ctx);
  tcase_add_test (tc_core, test_pack_len);
  tcase_add_test (tc_core, test_pack_abuse);
#if defined(HAVE_FORK) && HAVE_FORK==1
  tcase_add_test (tc_core, test_ppack);
  tcase_add_test (tc_core, test_ppack_noctx);
  tcase_add_test (tc_core, test_ppack_onlyctx);
  tcase_add_test (tc_core, test_ppack_multictx);
  tcase_add_test (tc_core, test_ppack_nofail);
#endif /* HAVE_FORK */
  suite_add_tcase (s, tc_limit);
  tcase_add_test (tc_limit, test_pack_ctx_limit);
  tcase_add_test (tc_limit, test_pack_fail_limit);
  tcase_add_test (tc_limit, test_pack_loc_limit);
#if defined(HAVE_FORK) && HAVE_FORK==1
  tcase_add_test (tc_limit, test_ppack_big);
#endif /* HAVE_FORK */

  return s;
}