kaguya
40 lines
771 B
C
40 lines
771 B
C
#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <assert.h>
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#include <errno.h>
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#ifdef USE_HOST_LIBC
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#define TEST_FILE "dprintf-host-libc.tmp"
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#else
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#define TEST_FILE "dprintf.tmp"
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#endif
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int main() {
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int fd = open(TEST_FILE, O_RDWR | O_CREAT, 0666);
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assert(fd > -1);
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int ret = dprintf(fd, "aaa");
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assert(ret == 3);
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// Check if we can read back the same things.
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// Also checks to see if the fd is still open,
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// which is issue #199.
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off_t seek = lseek(fd, 0, SEEK_SET);
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assert(seek == 0);
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char buf[3];
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ssize_t num_read = read(fd, buf, 3);
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assert(num_read == 3);
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assert(buf[0] == 'a'
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&& buf[1] == 'a'
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&& buf[2] == 'a');
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// All the tests pass, now we can unlink the file.
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ret = unlink(TEST_FILE);
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assert(ret == 0);
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return 0;
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}
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