memchr.c

ecos实时嵌入式操作系统

//=================================================================
//
//        memchr.c
//
//        Testcase for C library memchr()
//
//=================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
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// or inline functions from this file, or you compile this file and link it
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//####ECOSGPLCOPYRIGHTEND####
//=================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     ctarpy, jlarmour
// Contributors:  
// Date:          2000-04-30
// Description:   Contains testcode for C library memchr() function
//
//
//####DESCRIPTIONEND####

// INCLUDES

#include <string.h>
#include <cyg/infra/testcase.h>

// FUNCTIONS

// Functions to avoid having to use libc strings

static int my_strcmp(const char *s1, const char *s2)
{
    for ( ; *s1 == *s2 ; s1++,s2++ )
    {
        if ( *s1 == '\0' )
            break;
    } // for

    return (*s1 - *s2);
} // my_strcmp()

int main( int argc, char *argv[] )
{
    char x[] = "Your feeble skills are no match for the power of "
               "the dark side!";
    void *ret;

    CYG_TEST_INIT();

    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
                  "memchr() function");

    // Check 1
    ret = memchr(x, (int)'k', sizeof(x));
    CYG_TEST_PASS_FAIL( (my_strcmp(ret, x+13) == 0), "Simple test 1" );

    // Check 2
    ret = memchr(x, (int)'p', sizeof(x));
    CYG_TEST_PASS_FAIL( (my_strcmp(ret, x+40) == 0), "Simple test 2" );

    // Check 3
    ret = memchr(x, (int)'z', sizeof(x));
    CYG_TEST_PASS_FAIL( (ret == NULL), "Simple test 3" );

    // Check 4 (boundary condition)
    ret = memchr(x, (int)'\0', sizeof(x));
    CYG_TEST_PASS_FAIL( ret == (x+sizeof(x)-1), "Boundary test 1" );

    // Check 5 (boundary condition)
    ret = memchr(x, (int)'\0', sizeof(x)-1);
    CYG_TEST_PASS_FAIL( ret == NULL, "Boundary test 2" );

    // Check 6 (boundary condition)
    ret = memchr( (void *)"", (int)'\0', 0 );
    CYG_TEST_PASS_FAIL( ret == NULL, "Boundary test 3" );

//    CYG_TEST_NA("Testing is not applicable to this configuration");

    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
                    "memchr() function");
} // main()

// EOF memchr.c