/* tinytest_macros.h -- Copyright 2009-2012 Nick Mathewson
 *
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

#ifndef TINYTEST_MACROS_H_INCLUDED_
#define TINYTEST_MACROS_H_INCLUDED_

/* Helpers for defining statement-like macros */
#define TT_STMT_BEGIN do {
#define TT_STMT_END } while (0)

/* Redefine this if your test functions want to abort with something besides
 * "goto end;" */
#ifndef TT_EXIT_TEST_FUNCTION
#define TT_EXIT_TEST_FUNCTION TT_STMT_BEGIN goto end; TT_STMT_END
#endif

/* Redefine this if you want to note success/failure in some different way. */
#ifndef TT_DECLARE
#define TT_DECLARE(prefix, args)				\
	TT_STMT_BEGIN						\
	printf("\n  %s %s:%d: ",prefix,__FILE__,__LINE__);	\
	printf args ;						\
	TT_STMT_END
#endif

/* Announce a failure. Args are parenthesized printf args. */
#define TT_GRIPE(args) TT_DECLARE("FAIL", args)

/* Announce a non-failure if we're verbose. */
#define TT_BLATHER(args)						\
	TT_STMT_BEGIN							\
	if (tinytest_get_verbosity_()>1) TT_DECLARE("  OK", args);	\
	TT_STMT_END

#define TT_DIE(args)						\
	TT_STMT_BEGIN						\
	tinytest_set_test_failed_();				\
	TT_GRIPE(args);						\
	TT_EXIT_TEST_FUNCTION;					\
	TT_STMT_END

#define TT_FAIL(args)				\
	TT_STMT_BEGIN						\
	tinytest_set_test_failed_();				\
	TT_GRIPE(args);						\
	TT_STMT_END

/* Fail and abort the current test for the reason in msg */
#define tt_abort_printf(msg) TT_DIE(msg)
#define tt_abort_perror(op) TT_DIE(("%s: %s [%d]",(op),strerror(errno), errno))
#define tt_abort_msg(msg) TT_DIE(("%s", msg))
#define tt_abort() TT_DIE(("%s", "(Failed.)"))

/* Fail but do not abort the current test for the reason in msg. */
#define tt_failprint_f(msg) TT_FAIL(msg)
#define tt_fail_perror(op) TT_FAIL(("%s: %s [%d]",(op),strerror(errno), errno))
#define tt_fail_msg(msg) TT_FAIL(("%s", msg))
#define tt_fail() TT_FAIL(("%s", "(Failed.)"))

/* End the current test, and indicate we are skipping it. */
#define tt_skip()						\
	TT_STMT_BEGIN						\
	tinytest_set_test_skipped_();				\
	TT_EXIT_TEST_FUNCTION;					\
	TT_STMT_END

#define tt_want_(b, msg, fail)				\
	TT_STMT_BEGIN					\
	if (!(b)) {					\
		tinytest_set_test_failed_();		\
		TT_GRIPE(("%s",msg));			\
		fail;					\
	} else {					\
		TT_BLATHER(("%s",msg));			\
	}						\
	TT_STMT_END

/* Assert b, but do not stop the test if b fails.  Log msg on failure. */
#define tt_want_msg(b, msg)			\
	tt_want_(b, msg, );

/* Assert b and stop the test if b fails.  Log msg on failure. */
#define tt_assert_msg(b, msg)			\
	tt_want_(b, msg, TT_EXIT_TEST_FUNCTION);

/* Assert b, but do not stop the test if b fails. */
#define tt_want(b)   tt_want_msg( (b), "want("#b")")
/* Assert b, and stop the test if b fails. */
#define tt_assert(b) tt_assert_msg((b), "assert("#b")")

#define tt_assert_test_fmt_type(a,b,str_test,type,test,printf_type,printf_fmt, \
    setup_block,cleanup_block,die_on_fail)				\
	TT_STMT_BEGIN							\
	type val1_ = (type)(a);						\
	type val2_ = (type)(b);						\
	int tt_status_ = (test);					\
	if (!tt_status_ || tinytest_get_verbosity_()>1)	{		\
		printf_type print_;					\
		printf_type print1_;					\
		printf_type print2_;					\
		type value_ = val1_;					\
		setup_block;						\
		print1_ = print_;					\
		value_ = val2_;						\
		setup_block;						\
		print2_ = print_;					\
		TT_DECLARE(tt_status_?"	 OK":"FAIL",			\
			   ("assert(%s): "printf_fmt" vs "printf_fmt,	\
			    str_test, print1_, print2_));		\
		print_ = print1_;					\
		cleanup_block;						\
		print_ = print2_;					\
		cleanup_block;						\
		if (!tt_status_) {					\
			tinytest_set_test_failed_();			\
			die_on_fail ;					\
		}							\
	}								\
	TT_STMT_END

#define tt_assert_test_type(a,b,str_test,type,test,fmt,die_on_fail)	\
	tt_assert_test_fmt_type(a,b,str_test,type,test,type,fmt,	\
	    {print_=value_;},{},die_on_fail)

#define tt_assert_test_type_opt(a,b,str_test,type,test,fmt,die_on_fail)	\
	tt_assert_test_fmt_type(a,b,str_test,type,test,type,fmt,	\
            {print_=value_?value_:"<NULL>";},{},die_on_fail)

/* Helper: assert that a op b, when cast to type.  Format the values with
 * printf format fmt on failure. */
#define tt_assert_op_type(a,op,b,type,fmt)				\
	tt_assert_test_type(a,b,#a" "#op" "#b,type,(val1_ op val2_),fmt, \
	    TT_EXIT_TEST_FUNCTION)

#define tt_int_op(a,op,b)			\
	tt_assert_test_type(a,b,#a" "#op" "#b,long,(val1_ op val2_), \
	    "%ld",TT_EXIT_TEST_FUNCTION)

#define tt_uint_op(a,op,b)						\
	tt_assert_test_type(a,b,#a" "#op" "#b,unsigned long,		\
	    (val1_ op val2_),"%lu",TT_EXIT_TEST_FUNCTION)

#define tt_ptr_op(a,op,b)						\
	tt_assert_test_type(a,b,#a" "#op" "#b,void*,			\
	    (val1_ op val2_),"%p",TT_EXIT_TEST_FUNCTION)

#define tt_str_op(a,op,b)						\
	tt_assert_test_type_opt(a,b,#a" "#op" "#b,const char *,		\
	    (val1_ && val2_ && strcmp(val1_,val2_) op 0),"<%s>",	\
	    TT_EXIT_TEST_FUNCTION)

#define tt_mem_op(expr1, op, expr2, len)                                \
  tt_assert_test_fmt_type(expr1,expr2,#expr1" "#op" "#expr2,            \
			  const char *,                                 \
			  (val1_ && val2_ && memcmp(val1_, val2_, len) op 0), \
			  char *, "%s",					\
			  { print_ = tinytest_format_hex_(value_, (len)); }, \
			  { if (print_) free(print_); },		\
			  TT_EXIT_TEST_FUNCTION				\
                          );

#define tt_want_int_op(a,op,b)						\
	tt_assert_test_type(a,b,#a" "#op" "#b,long,(val1_ op val2_),"%ld",(void)0)

#define tt_want_uint_op(a,op,b)						\
	tt_assert_test_type(a,b,#a" "#op" "#b,unsigned long,		\
	    (val1_ op val2_),"%lu",(void)0)

#define tt_want_ptr_op(a,op,b)						\
	tt_assert_test_type(a,b,#a" "#op" "#b,void*,			\
	    (val1_ op val2_),"%p",(void)0)

#define tt_want_str_op(a,op,b)						\
	tt_assert_test_type(a,b,#a" "#op" "#b,const char *,		\
	    (strcmp(val1_,val2_) op 0),"<%s>",(void)0)

#endif
