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// test-audit-fgets.c
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <auplugin.h>
static void test_simple_line(void)
{
int fds[2];
char buf[16];
assert(pipe(fds) == 0);
auplugin_fgets_clear();
// nothing in buffer yet
assert(auplugin_fgets_more(sizeof(buf)) == 0);
assert(auplugin_fgets_eof() == 0);
// feed exactly one line and close
const char *input = "hello\n";
assert(write(fds[1], input, strlen(input)));
close(fds[1]);
// now we should see a complete line
assert(auplugin_fgets_more(sizeof(buf)) == 0);
int len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 6);
assert(strcmp(buf, "hello\n") == 0);
assert(auplugin_fgets_more(sizeof(buf)) == 0);
assert(auplugin_fgets_eof() == 0);
// next call: see EOF, no data
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 0);
assert(auplugin_fgets_eof() == 1);
close(fds[0]);
}
static void test_multiple_lines(void)
{
int fds[2];
char buf[16];
assert(pipe(fds) == 0);
auplugin_fgets_clear();
const char *input = "one\n two\n";
assert(write(fds[1], input, strlen(input)));
close(fds[1]);
// first line
int len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 4);
assert(strcmp(buf, "one\n") == 0);
// leftover " two\n" → there's a newline pending
assert(auplugin_fgets_more(sizeof(buf)) == 1);
// second line
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 5);
assert(strcmp(buf, " two\n") == 0);
// now buffer empties, EOF
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 0);
assert(auplugin_fgets_eof() == 1);
assert(auplugin_fgets_more(sizeof(buf)) == 0);
close(fds[0]);
}
static void test_partial_line(void)
{
int fds[2];
char buf[16];
assert(pipe(fds) == 0);
auplugin_fgets_clear();
const char *input = "partial"; // no '\n'
assert(write(fds[1], input, strlen(input)));
close(fds[1]);
// should hand back "partial" once EOF arrives
int len = auplugin_fgets(buf, sizeof(buf), fds[0]);
/* first call buffers the data but doesn't yet see EOF */
assert(len == 0);
assert(auplugin_fgets_eof() == 0);
/* second call returns the partial line and sets EOF */
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == (int)strlen(input));
assert(memcmp(buf, input, len) == 0);
assert(auplugin_fgets_eof() == 1);
/* further calls return 0 once drained */
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 0);
close(fds[0]);
}
static void test_long_line(void)
{
int fds[2];
char buf[10];
assert(pipe(fds) == 0);
auplugin_fgets_clear();
// make a 20-byte 'a' line plus '\n'
char input[22];
memset(input, 'a', 20);
input[20] = '\n';
input[21] = '\0';
assert(write(fds[1], input, 21));
close(fds[1]);
// 1) first chunk (blen=10 → blen-1=9)
int len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 9);
for (int i = 0; i < len; i++) assert(buf[i] == 'a');
assert(buf[len] == '\0');
// still have >9 bytes left (and no '\n' within the first 9)
assert(auplugin_fgets_more(sizeof(buf)) == 1);
// 2) second chunk: still sees newline in the remainder,
// but clamps again to 9
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 9);
for (int i = 0; i < len; i++) assert(buf[i] == 'a');
assert(buf[len] == '\0');
assert(auplugin_fgets_more(sizeof(buf)) == 1);
// 3) finally the last "aa\n"
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 3);
assert(buf[0] == 'a' && buf[1] == 'a' && buf[2] == '\n');
assert(buf[3] == '\0');
/* we’ve drained the data but haven’t hit EOF yet */
assert(auplugin_fgets_more(sizeof(buf)) == 0);
assert(auplugin_fgets_eof() == 0);
/* one more call to drive the EOF read() == 0 */
len = auplugin_fgets(buf, sizeof(buf), fds[0]);
assert(len == 0);
assert(auplugin_fgets_eof() == 1);
close(fds[0]);
}
int main(void)
{
test_simple_line();
test_multiple_lines();
test_partial_line();
test_long_line();
printf("audit-fgets tests: all passed\n");
return 0;
}
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