250 lines
10 KiB
C
250 lines
10 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 OR GPL-2.0-or-later
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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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#include "mbedtls/platform.h"
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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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#include "common.h"
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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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/** This macro asserts fails the test with given output message.
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*
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* \param MESSAGE The message to be outputed on assertion
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*/
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#define TEST_FAIL(MESSAGE) \
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do { \
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mbedtls_test_fail(MESSAGE, __LINE__, __FILE__); \
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goto exit; \
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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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(unsigned long long) (expr1), (unsigned long long) (expr2))) \
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goto exit; \
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} while (0)
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/** Evaluate two unsigned integer expressions and fail the test case
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* if they are not in increasing order (left <= right).
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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_LE_U(expr1, expr2) \
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do { \
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if (!mbedtls_test_le_u( #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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/** Evaluate two signed integer expressions and fail the test case
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* if they are not in increasing order (left <= right).
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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_LE_S(expr1, expr2) \
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do { \
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if (!mbedtls_test_le_s( #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 item_count 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 item_count 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 TEST_CALLOC(pointer, item_count) \
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do { \
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TEST_ASSERT((pointer) == NULL); \
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if ((item_count) != 0) { \
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(pointer) = mbedtls_calloc(sizeof(*(pointer)), \
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(item_count)); \
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TEST_ASSERT((pointer) != NULL); \
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} \
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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 item_count is zero, the resulting \p pointer will not be \c NULL.
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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 item_count Number of elements to allocate.
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* This expression may be evaluated multiple times.
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*
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* Note: if passing size 0, mbedtls_calloc may return NULL. In this case,
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* we reattempt to allocate with the smallest possible buffer to assure a
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* non-NULL pointer.
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*/
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#define TEST_CALLOC_NONNULL(pointer, item_count) \
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do { \
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TEST_ASSERT((pointer) == NULL); \
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(pointer) = mbedtls_calloc(sizeof(*(pointer)), \
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(item_count)); \
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if (((pointer) == NULL) && ((item_count) == 0)) { \
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(pointer) = mbedtls_calloc(1, 1); \
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} \
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TEST_ASSERT((pointer) != NULL); \
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} while (0)
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/* For backwards compatibility */
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#define ASSERT_ALLOC(pointer, item_count) TEST_CALLOC(pointer, item_count)
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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 #TEST_CALLOC, 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 TEST_CALLOC_OR_SKIP(pointer, item_count) \
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do { \
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TEST_ASSERT((pointer) == NULL); \
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if ((item_count) != 0) { \
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(pointer) = mbedtls_calloc(sizeof(*(pointer)), \
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(item_count)); \
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TEST_ASSUME((pointer) != NULL); \
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} \
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} while (0)
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/* For backwards compatibility */
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#define ASSERT_ALLOC_WEAK(pointer, item_count) TEST_CALLOC_OR_SKIP(pointer, item_count)
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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 TEST_MEMORY_COMPARE(p1, size1, p2, size2) \
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do { \
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TEST_EQUAL((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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/* For backwards compatibility */
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#define ASSERT_COMPARE(p1, size1, p2, size2) TEST_MEMORY_COMPARE(p1, size1, p2, size2)
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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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/** 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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#endif /* TEST_MACROS_H */
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