89615eefe7
When TEST_EQUAL fails, show the two numerical values in the test log (only with host_test). The values are printed in hexa and signed decimal. The arguments of TEST_EQUAL must now be integers, not pointers or floats. The current implementation requires them to fit in unsigned long long Signed values no larger than long long will work too. The implementation uses unsigned long long rather than uintmax_t to reduce portability concerns. The snprintf function must support "%llx" and "%lld". For this purpose, add room for two lines of text to the mbedtls_test_info structure. This adds 154 bytes of global data. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
266 lines
11 KiB
C
266 lines
11 KiB
C
/**
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* \file macros.h
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*
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* \brief This file contains generic macros for the purpose of testing.
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TEST_MACROS_H
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#define TEST_MACROS_H
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#include "mbedtls/build_info.h"
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#include <stdlib.h>
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#define mbedtls_fprintf fprintf
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#define mbedtls_snprintf snprintf
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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#define mbedtls_exit exit
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#define mbedtls_time time
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#define mbedtls_time_t time_t
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif
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#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
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#include "mbedtls/memory_buffer_alloc.h"
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#endif
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/**
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* \brief This macro tests the expression passed to it as a test step or
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* individual test in a test case.
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*
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* It allows a library function to return a value and return an error
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* code that can be tested.
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*
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* Failing the test means:
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* - Mark this test case as failed.
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* - Print a message identifying the failure.
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* - Jump to the \c exit label.
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*
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* This macro expands to an instruction, not an expression.
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* It may jump to the \c exit label.
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*
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* \param TEST The test expression to be tested.
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*/
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#define TEST_ASSERT( TEST ) \
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do { \
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if( ! (TEST) ) \
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{ \
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mbedtls_test_fail( #TEST, __LINE__, __FILE__ ); \
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goto exit; \
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} \
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} while( 0 )
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/** Evaluate two integer expressions and fail the test case if they have
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* different values.
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*
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* The two expressions should have the same signedness, otherwise the
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* comparison is not meaningful if the signed value is negative.
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*
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* \param expr1 An integral-typed expression to evaluate.
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* \param expr2 Another integral-typed expression to evaluate.
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*/
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#define TEST_EQUAL( expr1, expr2 ) \
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do { \
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if( ! mbedtls_test_equal( #expr1 " == " #expr2, __LINE__, __FILE__, \
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expr1, expr2 ) ) \
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goto exit; \
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} while( 0 )
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/** Allocate memory dynamically and fail the test case if this fails.
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* The allocated memory will be filled with zeros.
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*
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* You must set \p pointer to \c NULL before calling this macro and
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* put `mbedtls_free( pointer )` in the test's cleanup code.
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*
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* If \p length is zero, the resulting \p pointer will be \c NULL.
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* This is usually what we want in tests since API functions are
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* supposed to accept null pointers when a buffer size is zero.
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*
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* This macro expands to an instruction, not an expression.
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* It may jump to the \c exit label.
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*
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* \param pointer An lvalue where the address of the allocated buffer
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* will be stored.
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* This expression may be evaluated multiple times.
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* \param length Number of elements to allocate.
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* This expression may be evaluated multiple times.
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*
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*/
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#define ASSERT_ALLOC( pointer, length ) \
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do \
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{ \
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TEST_ASSERT( ( pointer ) == NULL ); \
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if( ( length ) != 0 ) \
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{ \
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( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
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( length ) ); \
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TEST_ASSERT( ( pointer ) != NULL ); \
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} \
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} \
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while( 0 )
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/** Allocate memory dynamically. If the allocation fails, skip the test case.
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*
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* This macro behaves like #ASSERT_ALLOC, except that if the allocation
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* fails, it marks the test as skipped rather than failed.
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*/
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#define ASSERT_ALLOC_WEAK( pointer, length ) \
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do \
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{ \
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TEST_ASSERT( ( pointer ) == NULL ); \
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if( ( length ) != 0 ) \
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{ \
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( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
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( length ) ); \
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TEST_ASSUME( ( pointer ) != NULL ); \
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} \
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} \
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while( 0 )
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/** Compare two buffers and fail the test case if they differ.
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*
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* This macro expands to an instruction, not an expression.
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* It may jump to the \c exit label.
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*
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* \param p1 Pointer to the start of the first buffer.
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* \param size1 Size of the first buffer in bytes.
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* This expression may be evaluated multiple times.
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* \param p2 Pointer to the start of the second buffer.
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* \param size2 Size of the second buffer in bytes.
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* This expression may be evaluated multiple times.
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*/
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#define ASSERT_COMPARE( p1, size1, p2, size2 ) \
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do \
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{ \
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TEST_ASSERT( ( size1 ) == ( size2 ) ); \
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if( ( size1 ) != 0 ) \
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TEST_ASSERT( memcmp( ( p1 ), ( p2 ), ( size1 ) ) == 0 ); \
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} \
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while( 0 )
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/**
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* \brief This macro tests the expression passed to it and skips the
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* running test if it doesn't evaluate to 'true'.
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*
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* \param TEST The test expression to be tested.
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*/
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#define TEST_ASSUME( TEST ) \
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do { \
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if( ! (TEST) ) \
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{ \
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mbedtls_test_skip( #TEST, __LINE__, __FILE__ ); \
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goto exit; \
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} \
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} while( 0 )
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#define TEST_HELPER_ASSERT(a) if( !( a ) ) \
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{ \
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mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n", \
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__FILE__, __LINE__, #a ); \
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mbedtls_exit( 1 ); \
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}
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/** \def ARRAY_LENGTH
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* Return the number of elements of a static or stack array.
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*
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* \param array A value of array (not pointer) type.
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*
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* \return The number of elements of the array.
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*/
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/* A correct implementation of ARRAY_LENGTH, but which silently gives
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* a nonsensical result if called with a pointer rather than an array. */
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#define ARRAY_LENGTH_UNSAFE( array ) \
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( sizeof( array ) / sizeof( *( array ) ) )
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#if defined(__GNUC__)
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/* Test if arg and &(arg)[0] have the same type. This is true if arg is
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* an array but not if it's a pointer. */
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#define IS_ARRAY_NOT_POINTER( arg ) \
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( ! __builtin_types_compatible_p( __typeof__( arg ), \
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__typeof__( &( arg )[0] ) ) )
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/* A compile-time constant with the value 0. If `const_expr` is not a
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* compile-time constant with a nonzero value, cause a compile-time error. */
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#define STATIC_ASSERT_EXPR( const_expr ) \
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( 0 && sizeof( struct { unsigned int STATIC_ASSERT : 1 - 2 * ! ( const_expr ); } ) )
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/* Return the scalar value `value` (possibly promoted). This is a compile-time
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* constant if `value` is. `condition` must be a compile-time constant.
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* If `condition` is false, arrange to cause a compile-time error. */
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#define STATIC_ASSERT_THEN_RETURN( condition, value ) \
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( STATIC_ASSERT_EXPR( condition ) ? 0 : ( value ) )
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#define ARRAY_LENGTH( array ) \
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( STATIC_ASSERT_THEN_RETURN( IS_ARRAY_NOT_POINTER( array ), \
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ARRAY_LENGTH_UNSAFE( array ) ) )
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#else
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/* If we aren't sure the compiler supports our non-standard tricks,
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* fall back to the unsafe implementation. */
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#define ARRAY_LENGTH( array ) ARRAY_LENGTH_UNSAFE( array )
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#endif
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/** Return the smaller of two values.
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*
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* \param x An integer-valued expression without side effects.
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* \param y An integer-valued expression without side effects.
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*
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* \return The smaller of \p x and \p y.
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*/
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#define MIN( x, y ) ( ( x ) < ( y ) ? ( x ) : ( y ) )
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/** Return the larger of two values.
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*
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* \param x An integer-valued expression without side effects.
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* \param y An integer-valued expression without side effects.
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*
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* \return The larger of \p x and \p y.
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*/
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#define MAX( x, y ) ( ( x ) > ( y ) ? ( x ) : ( y ) )
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/*
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* 32-bit integer manipulation macros (big endian)
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*/
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#ifndef GET_UINT32_BE
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#define GET_UINT32_BE(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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| ( (uint32_t) (b)[(i) + 1] << 16 ) \
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| ( (uint32_t) (b)[(i) + 2] << 8 ) \
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| ( (uint32_t) (b)[(i) + 3] ); \
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}
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#endif
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#ifndef PUT_UINT32_BE
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#define PUT_UINT32_BE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) ); \
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}
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#endif
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#endif /* TEST_MACROS_H */
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