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#include <string.h>
#include "test_runner.h"
#include "unity.h"
#include "util.h"
/* blank_to_eol should pad a buffer with spaces as far as it can, after an
* existing string therein, without overrunning, while still terminating */
RUNNER_DECLARE_TEST(test_blank_to_eol_happy)
{
char buf[11] = "hello";
blank_to_eol(buf, sizeof(buf));
TEST_ASSERT_EQUAL_STRING("hello ", buf);
}
/* blanking an empty string to end of buffer should fill entire buffer with
* spaces until the last byte, which should be null terminator */
RUNNER_DECLARE_TEST(test_blank_to_eol_empty)
{
char buf[5] = "";
blank_to_eol(buf, sizeof(buf));
TEST_ASSERT_EQUAL_STRING(" ", buf);
}
/* blanking should not overrun the specified buffer size at all */
RUNNER_DECLARE_TEST(test_blank_to_eol_no_overrun)
{
char buf[20] = {
'h', 'e', 'l', 'l', 'o', '\0',
'b', 'l', 'a', 'h',
'm', 'a', 'g', 'i', 'c', '\0'
};
blank_to_eol(buf, 10);
const char *expect = "hello ";
TEST_ASSERT_EQUAL_STRING(expect, buf);
TEST_ASSERT_EQUAL_STRING("magic", &buf[strlen(expect)+1]);
}
/* blanking a buffer which already has no '\0' within it should result in the
* buffer being terminated, truncating contents minimally as necessary to fit
* a '\0' */
RUNNER_DECLARE_TEST(test_blank_to_eol_overrun)
{
char buf[20] = "hello, world!";
blank_to_eol(buf, 6);
TEST_ASSERT_EQUAL_STRING("hello", buf);
/* also check that the buffer wasn't clobbered beyond its end. Note this
* doesn't test OOB reads, only writes */
TEST_ASSERT_EQUAL_STRING(" world!", &buf[6]);
}
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