/*
* Automated Testing Framework (atf)
*
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

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

#include <atf-c.h>

#include "atf-c/config.h"

#include "detail/env.h"
#include "detail/test_helpers.h"

static const char *test_value = "env-value";

static struct varnames {
   const char *lc;
   const char *uc;
   bool can_be_empty;
} all_vars[] = {
   { "atf_build_cc",       "ATF_BUILD_CC",       false },
   { "atf_build_cflags",   "ATF_BUILD_CFLAGS",   true  },
   { "atf_build_cpp",      "ATF_BUILD_CPP",      false },
   { "atf_build_cppflags", "ATF_BUILD_CPPFLAGS", true  },
   { "atf_build_cxx",      "ATF_BUILD_CXX",      false },
   { "atf_build_cxxflags", "ATF_BUILD_CXXFLAGS", true  },
   { "atf_includedir",     "ATF_INCLUDEDIR",     false },
   { "atf_libexecdir",     "ATF_LIBEXECDIR",     false },
   { "atf_pkgdatadir",     "ATF_PKGDATADIR",     false },
   { "atf_shell",          "ATF_SHELL",          false },
   { "atf_workdir",        "ATF_WORKDIR",        false },
   { NULL,                 NULL,                 false }
};

/* ---------------------------------------------------------------------
* Auxiliary functions.
* --------------------------------------------------------------------- */

void __atf_config_reinit(void);

static
void
unset_all(void)
{
   const struct varnames *v;
   for (v = all_vars; v->lc != NULL; v++)
       RE(atf_env_unset(v->uc));
}

static
void
compare_one(const char *var, const char *expvalue)
{
   const struct varnames *v;

   printf("Checking that %s is set to %s\n", var, expvalue);

   for (v = all_vars; v->lc != NULL; v++) {
       if (strcmp(v->lc, var) == 0)
           ATF_CHECK_STREQ(atf_config_get(v->lc), test_value);
       else
           ATF_CHECK(strcmp(atf_config_get(v->lc), test_value) != 0);
   }
}

/* ---------------------------------------------------------------------
* Test cases for the free functions.
* --------------------------------------------------------------------- */

ATF_TC(get);
ATF_TC_HEAD(get, tc)
{
   atf_tc_set_md_var(tc, "descr", "Tests the atf_config_get function");
}
ATF_TC_BODY(get, tc)
{
   const struct varnames *v;

   /* Unset all known environment variables and make sure the built-in
    * values do not match the bogus value we will use for testing. */
   unset_all();
   __atf_config_reinit();
   for (v = all_vars; v->lc != NULL; v++)
       ATF_CHECK(strcmp(atf_config_get(v->lc), test_value) != 0);

   /* Test the behavior of empty values. */
   for (v = all_vars; v->lc != NULL; v++) {
       unset_all();
       if (strcmp(atf_config_get(v->lc), "") != 0) {
           RE(atf_env_set(v->uc, ""));
           __atf_config_reinit();
           if (v->can_be_empty)
               ATF_CHECK(strlen(atf_config_get(v->lc)) == 0);
           else
               ATF_CHECK(strlen(atf_config_get(v->lc)) > 0);
       }
   }

   /* Check if every variable is recognized individually. */
   for (v = all_vars; v->lc != NULL; v++) {
       unset_all();
       RE(atf_env_set(v->uc, test_value));
       __atf_config_reinit();
       compare_one(v->lc, test_value);
   }
}

/* ---------------------------------------------------------------------
* Tests cases for the header file.
* --------------------------------------------------------------------- */

HEADER_TC(include, "atf-c/config.h");

/* ---------------------------------------------------------------------
* Main.
* --------------------------------------------------------------------- */

ATF_TP_ADD_TCS(tp)
{
   ATF_TP_ADD_TC(tp, get);

   /* Add the test cases for the header file. */
   ATF_TP_ADD_TC(tp, include);

   return atf_no_error();
}