diff packages/language/c/libc/string/current/tests/strncpy1.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
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children e0c0827131d1
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+//=================================================================
+//
+//        strncpy1.c
+//
+//        Testcase for C library strncpy()
+//
+//=================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (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.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//=================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     ctarpy, jlarmour
+// Contributors:  
+// Date:          2000-04-30
+// Description:   Contains testcode for C library strncpy() 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 int my_strncmp(const char *s1, const char *s2, size_t n)
+{
+    if (n==0)
+        return 0;
+    
+    while (n-- != 0 && *s1 == *s2)
+    {
+        if (n == 0 || *s1 == '\0' || *s2 == '\0')
+            break;
+        s1++;
+        s2++;
+    }
+    
+    return (*s1 - *s2);
+} // my_strncmp()
+
+
+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()
+
+
+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];
+    char *ret;
+
+    CYG_TEST_INIT();
+
+    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
+                  "strncpy() function");
+    CYG_TEST_INFO("This testcase provides simple basic tests");
+
+    // Check 1
+    my_strcpy(x, "Nine rings for men doomed to die");
+    ret = strncpy(y, "Nine rings for men doomed to die", my_strlen(x));
+    CYG_TEST_PASS_FAIL( (my_strncmp(x, y, my_strlen(x)) == 0),
+                        "Simple copy" );
+    // Check return value
+    CYG_TEST_PASS_FAIL( (y == ret), "Simple copy return value" );
+
+
+    // Check 2
+    my_strcpy(x, "");
+    my_strcpy(y, "Seven rings for the dwarves in their halls of stone");
+    ret = strncpy(y, x, 1);
+    CYG_TEST_PASS_FAIL( (my_strcmp(y, "") == 0), "Copy empty string" );
+    // Check return value
+    CYG_TEST_PASS_FAIL( (y == ret), "Copy empty string return value" );
+
+    // Check 3
+    my_strcpy(x, "");
+    my_strcpy(y, "Seven rings for the dwarves in their halls of stone");
+    ret = strncpy(y, x, 0);
+    if (my_strcmp(y, "Seven rings for the dwarves "
+                     "in their halls of stone") == 0)
+        CYG_TEST_PASS("Copy 0 characters");
+    else
+        CYG_TEST_FAIL("Copy 0 characters");
+    // Check return value
+    CYG_TEST_PASS_FAIL( (y == ret), "Copy empty string return value" );
+
+//    CYG_TEST_NA("Testing is not applicable to this configuration");
+
+    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
+                    "strncpy() function");
+
+} // main()
+
+// EOF strncpy1.c