Red Bear OS
1b3e94a20d
From release 0.1.0 pre-patched archive. This includes all Red Bear modifications previously maintained as patches in local/patches/relibc/.
41 lines
1.8 KiB
C
41 lines
1.8 KiB
C
#include <string.h>
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#include <assert.h>
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int main() {
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// Define some test strings
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const char *src = "Hello, World!";
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char dest[50];
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// Test 1: Copy exactly 5 characters from src to dest
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char *result = stpncpy(dest, src, 5);
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dest[5] = '\0'; // Ensure the destination string is null-terminated
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assert(strcmp(dest, "Hello") == 0); // Verify the string in dest
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assert(result == &dest[5]); // Ensure the return pointer points to the null terminator
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// Test 2: Copy 15 characters from src to dest (more than the length of src)
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result = stpncpy(dest, src, 15);
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dest[13] = '\0'; // Ensure the destination string is null-terminated
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assert(strcmp(dest, "Hello, World!") == 0); // Verify the string in dest
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assert(result == &dest[13]); // Ensure the return pointer points to the null terminator
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// Test 3: Copy 3 characters from src to dest
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result = stpncpy(dest, src, 3);
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dest[3] = '\0'; // Ensure the destination string is null-terminated
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assert(strcmp(dest, "Hel") == 0); // Verify the string in dest
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assert(result == &dest[3]); // Ensure the return pointer points to the null terminator
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// Test 4: Copy 0 characters from src to dest
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result = stpncpy(dest, src, 0);
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dest[0] = '\0'; // Ensure the destination is explicitly null-terminated
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assert(dest[0] == '\0'); // Ensure the destination is an empty string
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assert(result == dest); // Ensure the return pointer points to the start of dest
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// Test 5: Copy exactly the length of the source string
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result = stpncpy(dest, src, strlen(src));
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dest[strlen(src)] = '\0'; // Ensure the destination string is null-terminated
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assert(strcmp(dest, "Hello, World!") == 0); // Verify the string in dest
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assert(result == &dest[strlen(src)]); // Ensure the return pointer points to the null terminator
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return 0;
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}
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