tests/include/test/macros.h - third_party/github/ARMmbed/mbedtls - Git at Google

 /**
  * \file macros.h
  *
  * \brief   This file contains generic macros for the purpose of testing.
  */

 /*
  *  Copyright The Mbed TLS Contributors
  *  SPDX-License-Identifier: Apache-2.0
  *
  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
  *  not use this file except in compliance with the License.
  *  You may obtain a copy of the License at
  *
  *  http://www.apache.org/licenses/LICENSE-2.0
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  */

 #ifndef TEST_MACROS_H
 #define TEST_MACROS_H

 #include "mbedtls/build_info.h"

 #include <stdlib.h>

 #if defined(MBEDTLS_PLATFORM_C)
 #include "mbedtls/platform.h"
 #else
 #include <stdio.h>
 #define mbedtls_fprintf    fprintf
 #define mbedtls_snprintf   snprintf
 #define mbedtls_calloc     calloc
 #define mbedtls_free       free
 #define mbedtls_exit       exit
 #define mbedtls_time       time
 #define mbedtls_time_t     time_t
 #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
 #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
 #endif

 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
 #include "mbedtls/memory_buffer_alloc.h"
 #endif

 /**
  * \brief   This macro tests the expression passed to it as a test step or
  *          individual test in a test case.
  *
  *          It allows a library function to return a value and return an error
  *          code that can be tested.
  *
  *          Failing the test means:
  *          - Mark this test case as failed.
  *          - Print a message identifying the failure.
  *          - Jump to the \c exit label.
  *
  *          This macro expands to an instruction, not an expression.
  *          It may jump to the \c exit label.
  *
  * \param   TEST    The test expression to be tested.
  */
 #define TEST_ASSERT( TEST )                                 \
     do {                                                    \
        if( ! (TEST) )                                       \
        {                                                    \
           mbedtls_test_fail( #TEST, __LINE__, __FILE__ );   \
           goto exit;                                        \
        }                                                    \
     } while( 0 )

 /** Evaluate two expressions and fail the test case if they have different
  * values.
  *
  * \param expr1     An expression to evaluate.
  * \param expr2     The expected value of \p expr1. This can be any
  *                  expression, but it is typically a constant.
  */
 #define TEST_EQUAL( expr1, expr2 )              \
     TEST_ASSERT( ( expr1 ) == ( expr2 ) )

 /** Allocate memory dynamically and fail the test case if this fails.
  * The allocated memory will be filled with zeros.
  *
  * You must set \p pointer to \c NULL before calling this macro and
  * put `mbedtls_free( pointer )` in the test's cleanup code.
  *
  * If \p length is zero, the resulting \p pointer will be \c NULL.
  * This is usually what we want in tests since API functions are
  * supposed to accept null pointers when a buffer size is zero.
  *
  * This macro expands to an instruction, not an expression.
  * It may jump to the \c exit label.
  *
  * \param pointer   An lvalue where the address of the allocated buffer
  *                  will be stored.
  *                  This expression may be evaluated multiple times.
  * \param length    Number of elements to allocate.
  *                  This expression may be evaluated multiple times.
  *
  */
 #define ASSERT_ALLOC( pointer, length )                           \
     do                                                            \
     {                                                             \
         TEST_ASSERT( ( pointer ) == NULL );                       \
         if( ( length ) != 0 )                                     \
         {                                                         \
             ( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
                                           ( length ) );           \
             TEST_ASSERT( ( pointer ) != NULL );                   \
         }                                                         \
     }                                                             \
     while( 0 )

 /** Allocate memory dynamically. If the allocation fails, skip the test case.
  *
  * This macro behaves like #ASSERT_ALLOC, except that if the allocation
  * fails, it marks the test as skipped rather than failed.
  */
 #define ASSERT_ALLOC_WEAK( pointer, length )                      \
     do                                                            \
     {                                                             \
         TEST_ASSERT( ( pointer ) == NULL );                       \
         if( ( length ) != 0 )                                     \
         {                                                         \
             ( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
                                           ( length ) );           \
             TEST_ASSUME( ( pointer ) != NULL );                   \
         }                                                         \
     }                                                             \
     while( 0 )

 /** Compare two buffers and fail the test case if they differ.
  *
  * This macro expands to an instruction, not an expression.
  * It may jump to the \c exit label.
  *
  * \param p1        Pointer to the start of the first buffer.
  * \param size1     Size of the first buffer in bytes.
  *                  This expression may be evaluated multiple times.
  * \param p2        Pointer to the start of the second buffer.
  * \param size2     Size of the second buffer in bytes.
  *                  This expression may be evaluated multiple times.
  */
 #define ASSERT_COMPARE( p1, size1, p2, size2 )                          \
     do                                                                  \
     {                                                                   \
         TEST_ASSERT( ( size1 ) == ( size2 ) );                          \
         if( ( size1 ) != 0 )                                            \
             TEST_ASSERT( memcmp( ( p1 ), ( p2 ), ( size1 ) ) == 0 );    \
     }                                                                   \
     while( 0 )

 /**
  * \brief   This macro tests the expression passed to it and skips the
  *          running test if it doesn't evaluate to 'true'.
  *
  * \param   TEST    The test expression to be tested.
  */
 #define TEST_ASSUME( TEST )                                 \
     do {                                                    \
         if( ! (TEST) )                                      \
         {                                                   \
             mbedtls_test_skip( #TEST, __LINE__, __FILE__ ); \
             goto exit;                                      \
         }                                                   \
     } while( 0 )

 #define TEST_HELPER_ASSERT(a) if( !( a ) )                          \
 {                                                                   \
     mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n",    \
                              __FILE__, __LINE__, #a );              \
     mbedtls_exit( 1 );                                              \
 }

 /** \def ARRAY_LENGTH
  * Return the number of elements of a static or stack array.
  *
  * \param array         A value of array (not pointer) type.
  *
  * \return The number of elements of the array.
  */
 /* A correct implementation of ARRAY_LENGTH, but which silently gives
  * a nonsensical result if called with a pointer rather than an array. */
 #define ARRAY_LENGTH_UNSAFE( array )            \
     ( sizeof( array ) / sizeof( *( array ) ) )

 #if defined(__GNUC__)
 /* Test if arg and &(arg)[0] have the same type. This is true if arg is
  * an array but not if it's a pointer. */
 #define IS_ARRAY_NOT_POINTER( arg )                                     \
     ( ! __builtin_types_compatible_p( __typeof__( arg ),                \
                                       __typeof__( &( arg )[0] ) ) )
 /* A compile-time constant with the value 0. If `const_expr` is not a
  * compile-time constant with a nonzero value, cause a compile-time error. */
 #define STATIC_ASSERT_EXPR( const_expr )                                \
     ( 0 && sizeof( struct { unsigned int STATIC_ASSERT : 1 - 2 * ! ( const_expr ); } ) )

 /* Return the scalar value `value` (possibly promoted). This is a compile-time
  * constant if `value` is. `condition` must be a compile-time constant.
  * If `condition` is false, arrange to cause a compile-time error. */
 #define STATIC_ASSERT_THEN_RETURN( condition, value )   \
     ( STATIC_ASSERT_EXPR( condition ) ? 0 : ( value ) )

 #define ARRAY_LENGTH( array )                                           \
     ( STATIC_ASSERT_THEN_RETURN( IS_ARRAY_NOT_POINTER( array ),         \
                                  ARRAY_LENGTH_UNSAFE( array ) ) )

 #else
 /* If we aren't sure the compiler supports our non-standard tricks,
  * fall back to the unsafe implementation. */
 #define ARRAY_LENGTH( array ) ARRAY_LENGTH_UNSAFE( array )
 #endif

 /** Return the smaller of two values.
  *
  * \param x         An integer-valued expression without side effects.
  * \param y         An integer-valued expression without side effects.
  *
  * \return The smaller of \p x and \p y.
  */
 #define MIN( x, y ) ( ( x ) < ( y ) ? ( x ) : ( y ) )

 /** Return the larger of two values.
  *
  * \param x         An integer-valued expression without side effects.
  * \param y         An integer-valued expression without side effects.
  *
  * \return The larger of \p x and \p y.
  */
 #define MAX( x, y ) ( ( x ) > ( y ) ? ( x ) : ( y ) )

 /*
  * 32-bit integer manipulation macros (big endian)
  */
 #ifndef GET_UINT32_BE
 #define GET_UINT32_BE(n,b,i)                            \
 {                                                       \
     (n) = ( (uint32_t) (b)[(i)    ] << 24 )             \
         | ( (uint32_t) (b)[(i) + 1] << 16 )             \
         | ( (uint32_t) (b)[(i) + 2] <<  8 )             \
         | ( (uint32_t) (b)[(i) + 3]       );            \
 }
 #endif

 #ifndef PUT_UINT32_BE
 #define PUT_UINT32_BE(n,b,i)                            \
 {                                                       \
     (b)[(i)    ] = (unsigned char) ( (n) >> 24 );       \
     (b)[(i) + 1] = (unsigned char) ( (n) >> 16 );       \
     (b)[(i) + 2] = (unsigned char) ( (n) >>  8 );       \
     (b)[(i) + 3] = (unsigned char) ( (n)       );       \
 }
 #endif

 #endif /* TEST_MACROS_H */
	/**
	* \file macros.h
	*
	* \brief This file contains generic macros for the purpose of testing.
	*/

	/*
	* Copyright The Mbed TLS Contributors
	* SPDX-License-Identifier: Apache-2.0
	*
	* Licensed under the Apache License, Version 2.0 (the "License"); you may
	* not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
	* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#ifndef TEST_MACROS_H
	#define TEST_MACROS_H

	#include "mbedtls/build_info.h"

	#include <stdlib.h>

	#if defined(MBEDTLS_PLATFORM_C)
	#include "mbedtls/platform.h"
	#else
	#include <stdio.h>
	#define mbedtls_fprintf fprintf
	#define mbedtls_snprintf snprintf
	#define mbedtls_calloc calloc
	#define mbedtls_free free
	#define mbedtls_exit exit
	#define mbedtls_time time
	#define mbedtls_time_t time_t
	#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
	#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
	#endif

	#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
	#include "mbedtls/memory_buffer_alloc.h"
	#endif

	/**
	* \brief This macro tests the expression passed to it as a test step or
	* individual test in a test case.
	*
	* It allows a library function to return a value and return an error
	* code that can be tested.
	*
	* Failing the test means:
	* - Mark this test case as failed.
	* - Print a message identifying the failure.
	* - Jump to the \c exit label.
	*
	* This macro expands to an instruction, not an expression.
	* It may jump to the \c exit label.
	*
	* \param TEST The test expression to be tested.
	*/
	#define TEST_ASSERT( TEST ) \
	do { \
	if( ! (TEST) ) \
	{ \
	mbedtls_test_fail( #TEST, __LINE__, __FILE__ ); \
	goto exit; \
	} \
	} while( 0 )

	/** Evaluate two expressions and fail the test case if they have different
	* values.
	*
	* \param expr1 An expression to evaluate.
	* \param expr2 The expected value of \p expr1. This can be any
	* expression, but it is typically a constant.
	*/
	#define TEST_EQUAL( expr1, expr2 ) \
	TEST_ASSERT( ( expr1 ) == ( expr2 ) )

	/** Allocate memory dynamically and fail the test case if this fails.
	* The allocated memory will be filled with zeros.
	*
	* You must set \p pointer to \c NULL before calling this macro and
	* put `mbedtls_free( pointer )` in the test's cleanup code.
	*
	* If \p length is zero, the resulting \p pointer will be \c NULL.
	* This is usually what we want in tests since API functions are
	* supposed to accept null pointers when a buffer size is zero.
	*
	* This macro expands to an instruction, not an expression.
	* It may jump to the \c exit label.
	*
	* \param pointer An lvalue where the address of the allocated buffer
	* will be stored.
	* This expression may be evaluated multiple times.
	* \param length Number of elements to allocate.
	* This expression may be evaluated multiple times.
	*
	*/
	#define ASSERT_ALLOC( pointer, length ) \
	do \
	{ \
	TEST_ASSERT( ( pointer ) == NULL ); \
	if( ( length ) != 0 ) \
	{ \
	( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
	( length ) ); \
	TEST_ASSERT( ( pointer ) != NULL ); \
	} \
	} \
	while( 0 )

	/** Allocate memory dynamically. If the allocation fails, skip the test case.
	*
	* This macro behaves like #ASSERT_ALLOC, except that if the allocation
	* fails, it marks the test as skipped rather than failed.
	*/
	#define ASSERT_ALLOC_WEAK( pointer, length ) \
	do \
	{ \
	TEST_ASSERT( ( pointer ) == NULL ); \
	if( ( length ) != 0 ) \
	{ \
	( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
	( length ) ); \
	TEST_ASSUME( ( pointer ) != NULL ); \
	} \
	} \
	while( 0 )

	/** Compare two buffers and fail the test case if they differ.
	*
	* This macro expands to an instruction, not an expression.
	* It may jump to the \c exit label.
	*
	* \param p1 Pointer to the start of the first buffer.
	* \param size1 Size of the first buffer in bytes.
	* This expression may be evaluated multiple times.
	* \param p2 Pointer to the start of the second buffer.
	* \param size2 Size of the second buffer in bytes.
	* This expression may be evaluated multiple times.
	*/
	#define ASSERT_COMPARE( p1, size1, p2, size2 ) \
	do \
	{ \
	TEST_ASSERT( ( size1 ) == ( size2 ) ); \
	if( ( size1 ) != 0 ) \
	TEST_ASSERT( memcmp( ( p1 ), ( p2 ), ( size1 ) ) == 0 ); \
	} \
	while( 0 )

	/**
	* \brief This macro tests the expression passed to it and skips the
	* running test if it doesn't evaluate to 'true'.
	*
	* \param TEST The test expression to be tested.
	*/
	#define TEST_ASSUME( TEST ) \
	do { \
	if( ! (TEST) ) \
	{ \
	mbedtls_test_skip( #TEST, __LINE__, __FILE__ ); \
	goto exit; \
	} \
	} while( 0 )

	#define TEST_HELPER_ASSERT(a) if( !( a ) ) \
	{ \
	mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n", \
	__FILE__, __LINE__, #a ); \
	mbedtls_exit( 1 ); \
	}

	/** \def ARRAY_LENGTH
	* Return the number of elements of a static or stack array.
	*
	* \param array A value of array (not pointer) type.
	*
	* \return The number of elements of the array.
	*/
	/* A correct implementation of ARRAY_LENGTH, but which silently gives
	* a nonsensical result if called with a pointer rather than an array. */
	#define ARRAY_LENGTH_UNSAFE( array ) \
	( sizeof( array ) / sizeof( *( array ) ) )

	#if defined(__GNUC__)
	/* Test if arg and &(arg)[0] have the same type. This is true if arg is
	* an array but not if it's a pointer. */
	#define IS_ARRAY_NOT_POINTER( arg ) \
	( ! __builtin_types_compatible_p( __typeof__( arg ), \
	__typeof__( &( arg )[0] ) ) )
	/* A compile-time constant with the value 0. If `const_expr` is not a
	* compile-time constant with a nonzero value, cause a compile-time error. */
	#define STATIC_ASSERT_EXPR( const_expr ) \
	( 0 && sizeof( struct { unsigned int STATIC_ASSERT : 1 - 2 * ! ( const_expr ); } ) )

	/* Return the scalar value `value` (possibly promoted). This is a compile-time
	* constant if `value` is. `condition` must be a compile-time constant.
	* If `condition` is false, arrange to cause a compile-time error. */
	#define STATIC_ASSERT_THEN_RETURN( condition, value ) \
	( STATIC_ASSERT_EXPR( condition ) ? 0 : ( value ) )

	#define ARRAY_LENGTH( array ) \
	( STATIC_ASSERT_THEN_RETURN( IS_ARRAY_NOT_POINTER( array ), \
	ARRAY_LENGTH_UNSAFE( array ) ) )

	#else
	/* If we aren't sure the compiler supports our non-standard tricks,
	* fall back to the unsafe implementation. */
	#define ARRAY_LENGTH( array ) ARRAY_LENGTH_UNSAFE( array )
	#endif

	/** Return the smaller of two values.
	*
	* \param x An integer-valued expression without side effects.
	* \param y An integer-valued expression without side effects.
	*
	* \return The smaller of \p x and \p y.
	*/
	#define MIN( x, y ) ( ( x ) < ( y ) ? ( x ) : ( y ) )

	/** Return the larger of two values.
	*
	* \param x An integer-valued expression without side effects.
	* \param y An integer-valued expression without side effects.
	*
	* \return The larger of \p x and \p y.
	*/
	#define MAX( x, y ) ( ( x ) > ( y ) ? ( x ) : ( y ) )

	/*
	* 32-bit integer manipulation macros (big endian)
	*/
	#ifndef GET_UINT32_BE
	#define GET_UINT32_BE(n,b,i) \
	{ \
	(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
	\| ( (uint32_t) (b)[(i) + 1] << 16 ) \
	\| ( (uint32_t) (b)[(i) + 2] << 8 ) \
	\| ( (uint32_t) (b)[(i) + 3] ); \
	}
	#endif

	#ifndef PUT_UINT32_BE
	#define PUT_UINT32_BE(n,b,i) \
	{ \
	(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
	(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
	(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
	(b)[(i) + 3] = (unsigned char) ( (n) ); \
	}
	#endif

	#endif /* TEST_MACROS_H */