strcspn.c

ecos实时嵌入式操作系统

//=================================================================
//
//        strcspn.c
//
//        Testcase for C library strcspn()
//
//=================================================================
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
//=================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     ctarpy, jlarmour
// Contributors:  
// Date:          2000-04-30
// Description:   Contains testcode for C library strcspn() function
//
//
//####DESCRIPTIONEND####

// INCLUDES

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


// FUNCTIONS

// Functions to avoid having to use libc strings

static int my_strlen(const char *s)
{
    const char *ptr;

    ptr = s;
    for ( ptr=s ; *ptr != '\0' ; ptr++ )
        ;

    return (int)(ptr-s);
} // my_strlen()


static char *my_strcpy(char *s1, const char *s2)
{
    while (*s2 != '\0') {
        *(s1++) = *(s2++);
    }
    *s1 = '\0';

    return s1; 
} // my_strcpy()


int main( int argc, char *argv[] )
{
    char x[300];
    char y[300];
    int ret;

    CYG_TEST_INIT();

    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
                  "strcspn() function");
    CYG_TEST_INFO("This testcase provides simple basic tests");

    // Check 1
    my_strcpy(x, "ah blow my nose at you, so-called Arthur king!");
    my_strcpy(y, "A");
    ret = strcspn(x, y);
    CYG_TEST_PASS_FAIL( (ret == 34), "Simple strcspn() for one char" );


    // Check 2
    my_strcpy(x, "Not bad for a little fur ball. You! Stay here.");
    my_strcpy(y, "fd");
    ret = strcspn(x, y);
    CYG_TEST_PASS_FAIL( (ret == 6), "Simple strcspn() for two chars" );

    // Check 3 (boundary condition)
    my_strcpy(x, "");
    my_strcpy(y, "zx");
    ret = strcspn(x, y);
    CYG_TEST_PASS_FAIL( (ret == 0), "Empty string to search");

    
    // Check 4 (boundary condition)
    my_strcpy(x, "So, if she weighs the same as a duck, she's made of wood!");
    my_strcpy(y, "zx");
    ret = strcspn(x, y);
    CYG_TEST_PASS_FAIL( (ret == my_strlen(x)), "Characters not in string" );

    // Check 5 (boundary condition)
    my_strcpy(x, "So, if she weighs the same as a duck, she's made of wood!");
    my_strcpy(y, "S");
    ret = strcspn(x, y);
    CYG_TEST_PASS_FAIL( (ret == 0), "First character of string" );

    // Check 6 (boundary condition)
    my_strcpy(x, "So, if she weighs the same as a duck, she's made of wood!");
    my_strcpy(y, "!");
    ret = strcspn(x, y);
    CYG_TEST_PASS_FAIL( (ret == (my_strlen(x) - 1)),
                        "Penultimate character of string" );

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

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

// EOF strcspn.c